A ship hull transfer method under multi-working condition with size limitation

Abstract

The application discloses a ship body transfer method under multi-working conditions with size limitation, and aims to solve the limitation of traditional ship body transfer methods under large-scale ship bodies, narrow sites and complex working conditions, and to meet the size diversification requirement of modern engineering.The application comprises the following steps: step 1, installing three detachable piers at the lower part of a ship body manufacturing platform; the three piers are respectively located at the left section, the middle section and the right section of the lower part of the ship body manufacturing platform; step 2, manufacturing and installing the ship body at the upper part of the ship body manufacturing platform; and step 3, transferring the ship body based on the detachable piers and the ship body manufacturing platform.The detachable piers are installed at the bottom of the ship body manufacturing platform, large-area equipment such as a gantry crane and a large-scale slide rail are optimized, and the transfer work under the site limitation condition is ensured, and the safety during the transfer process is considered.The application is suitable for ship engineering, port construction and other scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to a ship body transfer method under the condition of multi-working condition bearing with size limitation, and belongs to the technical field of engineering construction. BACKGROUND

[0002] In the shipbuilding industry, the transfer of ship bodies is a crucial link that runs through various stages such as construction, maintenance, modification, and daily operation. However, with the continuous increase in the size of ships and the limitations of construction and maintenance sites, the challenges in the process of ship body transfer have become increasingly prominent. In particular, in limited spaces such as ports, docks, or shipyards, how to efficiently and safely complete the transfer of ship bodies has become a problem that needs to be solved in the industry.

[0003] Traditional ship body transfer methods often rely on large floating cranes, gantry cranes, or tugboats, but these methods have many limitations in practical application. For example, floating cranes and gantry cranes have limited operating ranges and require higher site requirements, making it difficult to operate flexibly in narrow areas. While tugboats can move freely in water, their stability and safety during towing cannot be guaranteed in conditions of strong wind and waves or significant water level changes.

[0004] In addition, different ship bodies have different weights, sizes, and shapes, which also pose additional challenges to the transfer process. Traditional transfer methods often need to be customized according to the specific conditions of the ship body, which not only increases costs but also prolongs the construction period. At the same time, since the ship body needs to withstand various forces such as gravity, friction, impact, etc. during the transfer process, effective measures must be taken to ensure the structural integrity and safety of the ship body.

[0005] More complex is that the transfer of ship bodies is often affected by various working conditions such as wind direction, wind speed, tides, water flow, temperature changes, etc. These factors not only affect the smooth progress of the transfer process, but also may cause damage to the ship body or cause safety accidents. Therefore, when developing new ship body transfer methods, the influence of these working conditions must be fully considered, and appropriate measures must be taken to respond. SUMMARY

[0006] To solve the limitations of traditional ship body transfer methods in large ships, narrow sites, and complex working conditions, and to meet the size diversification needs of modern engineering, a ship body transfer method under the condition of multi-working condition bearing with size limitation is proposed to achieve safe transfer of the ship body under the condition of limited transfer site size.

[0007] The technical solution adopted by the present application to solve the above problems is:

[0008] The ship body transfer method under the condition of multi-working condition bearing with size limitation according to the present application comprises the following steps:

[0009] Step 1, install three detachable piers on the lower part of the hull manufacturing platform, the three detachable piers include two side piers and one middle pier, the two side piers are respectively located at both ends of the bottom of the hull manufacturing platform, and the middle pier is located between the two side piers and at the middle section of the bottom of the hull manufacturing platform;

[0010] Step 2, after the three detachable piers and the hull manufacturing platform are installed, the hull is manufactured and installed on the upper part of the hull manufacturing platform; including the connection, assembly, welding and other work of the whole and local parts of the hull, the hull is fixed on the manufacturing platform by using a clamp to ensure the overall stability of the platform and the hull during the processing.

[0011] Step 3, transfer the hull based on the detachable piers and the hull manufacturing platform.

[0012] Further, in step 3, the specific operation of transferring the hull is as follows:

[0013] Step 3.1 place a heavy machine between each of the side piers and the middle pier;

[0014] Step 3.2 support the hull manufacturing platform through the hydraulic system of the small crane, adjust the pre-supporting force of the crane on the hull manufacturing platform through the central control system, and make the hull manufacturing platform, the two side piers and the middle pier move upward as a whole;

[0015] Step 3.3 remove the connecting bolts between the two side piers and the hull manufacturing platform, remove the two side piers, keep the small crane in the jacking state, and drive the two ship handling vehicles into the original two side piers to support the hull;

[0016] Step 3.4 set the path of the ship handling vehicle through the central control system, complete the transfer of the hull manufacturing platform, the hull and the middle pier; and simultaneously complete the transfer of the two removed side piers;

[0017] Step 3.5 after being transferred to the position, control the ship handling vehicle to lower the flat plate height through the central control system, and make the hull manufacturing platform together with the hull fall into position on the two side piers and complete the fastening connection.

[0018] Further, in step 3, the specific operation of transferring the hull is as follows:

[0019] Step 3.1 place a heavy machine between each of the side piers and the middle pier;

[0020] Step 3.2 support the hull manufacturing platform through the hydraulic system of the small crane, adjust the pre-supporting force of the crane on the hull manufacturing platform through the central control system, and make the hull manufacturing platform, the two side piers and the middle pier move upward as a whole;

[0021] Step 3.3 After the connecting bolts between the middle support and the ship body manufacturing platform are removed, the middle support is removed, the ship carrying vehicle is driven into the original middle support to support the ship body under the condition that the small crane is in the lifting state;

[0022] Step 3.4 The path of the ship carrying vehicle is set through the central control system, and the transfer of the ship body manufacturing platform, the ship body and the two side supports is completed; the transfer of the removed middle support is also completed synchronously;

[0023] Step 3.5 After being transferred to the position, the height of the ship carrying vehicle is lowered through the central control system, the ship body manufacturing platform is lowered together with the ship body to the middle support and the fastening connection is completed.

[0024] Further, the distance between each two adjacent piers is greater than the width of the crane body.

[0025] Further, the ship body manufacturing platform is supported by the crane hydraulic system, so that the ship body manufacturing platform is lifted by 50mm as a whole.

[0026] Further, two lifting pads are installed on the lower surface of the ship body manufacturing platform, and the two lifting pads are located on the upper parts of the two cranes respectively.

[0027] The beneficial effects of the present application are:

[0028] 1. The ship body transfer method under the condition of limited size and multiple working conditions can be used to transfer the ship body under the condition of limited site size. After testing, the ship body transfer method under the condition of limited size and multiple working conditions can realize the safe transfer of small ship bodies and local ship bodies of large ships.

[0029] 2. The detachable piers are installed at the bottom of the ship body manufacturing platform, the large-area equipment such as the gantry crane and the large sliding rail is optimized, and the safety of the transfer process is ensured under the condition of limited site.

[0030] 3. The processing, assembly, connection and in-out of the ship body are carried out on the detachable platform, so that the transfer time and cost are saved.

[0031] 4. The transfer strategy involved in step 3 is adopted, and the synchronism of the transfer equipment is realized through the central control system. DETAILED DESCRIPTION

[0032] Figure 1 is a structural schematic view of the detachable pier of the present application;

[0033] Figure 2 is the A-A sectional view of Figure 1 ;

[0034] Figure 3 is Figure 1 a B-B sectional view of

[0035] In the figure: 1-shipbuilding platform, 2-side pier, 3-middle pier, 4-jacking pad, 5-connecting bolt. DETAILED DESCRIPTION

[0036] Specific implementation one: the ship body transfer method under the condition of limited size and multiple working conditions in the embodiment is suitable for the scene that the hoisting and transfer capacity is insufficient, the lifting height is limited (≤100 mm), the width of the ship moving flat car is limited, and rapid lifting, transfer and landing are required. It specifically includes the following steps:

[0037] Step 1, taking the shipbuilding platform 1 as a bridge, three detachable piers are installed at the lower part of the shipbuilding platform 1, the three detachable piers include two side piers 2 and one middle pier 3, the two side piers 2 are respectively located at both ends of the bottom of the shipbuilding platform 1, and the middle pier 3 is located between the two side piers 2 and at the middle segment of the bottom of the shipbuilding platform 1; the three piers are detachably connected with the shipbuilding platform 1 through connecting bolts 5, the height of the shipbuilding platform 1 is controlled to ensure the horizontal of the bridge, and the shipbuilding platform is stabilized by the gravity of the shipbuilding platform 1 and the ship. The detachable pier structure is shown in Figures 1 to 3 .

[0038] Step 2, after installing the three detachable piers and the shipbuilding platform 1, the ship body is manufactured and installed on the upper part of the shipbuilding platform 1; including the connection, assembly, welding and other work of the whole and local parts of the ship body, and the ship body is fixed on the shipbuilding platform 1 by using a clamp to ensure the overall stability of the platform and the ship body during the processing.

[0039] Step 3, based on the detachable pier and the shipbuilding platform, the ship body is transferred, in step 3, according to different situations, two schemes can be used to move the ship, if the width of the ship carrier is greater than the net space requirement between the two side piers, or the carrying capacity is insufficient, the ship carrier needs to be arranged on both sides to lift and transfer the ship body, at this time, the side pier needs to be replaced, and the ship body is transferred by two ship carriers, the specific operation steps are as follows:

[0040] Step 3.1, place a crane between the side pier 2 and the middle pier 3;

[0041] Step 3.2, support the shipbuilding platform 1 through the hydraulic system of the crane, adjust the pre-supporting force of the crane to the shipbuilding platform 1 through the central control system, and make the shipbuilding platform 1, the two side piers 2 and the middle pier 3 move upward as a whole;

[0042] Step 3.3. Remove the connecting bolts of the two side piers 2 and the ship body manufacturing platform 1, remove the two side piers 2, and keep the crane in the lifting state, and then drive the two ship handling vehicles to support the ship body at the positions of the two side piers 2 respectively;

[0043] Step 3.4. Set the path of the ship handling vehicle through the central control system, complete the transfer of the ship body manufacturing platform 1, the ship body and the middle pier 3, and simultaneously complete the transfer of the two removed side piers 2;

[0044] Step 3.5. After being transferred to the position, control the ship handling vehicle to lower the height through the central control system, and then lower the ship body manufacturing platform 1 together with the ship body to the two side piers 2 and complete the fastening connection.

[0045] Preferably, the removal of the side piers and the middle pier can be performed by using a forklift, and the ship handling vehicle can be transported by using a flatbed vehicle.

[0046] Preferably, the distance between each two adjacent detachable piers is greater than the width of the crane body.

[0047] Preferably, the ship body manufacturing platform 1 is supported by the crane hydraulic system, and the ship body manufacturing platform 1 is lifted by 50 mm as a whole.

[0048] Preferably, two lifting pads 4 are installed on the lower surface of the ship body manufacturing platform 1, and the two lifting pads 4 are located on the upper part of the two small cranes respectively. The installation of the lifting pads 4 can strengthen the lifting part due to the large weight and load, and can also ensure the posture and stability during lifting.

[0049] Specific implementation method two: the difference between this implementation method and the specific implementation method one is that, when the width of the ship handling vehicle is less than the required net space between the two side piers, and the bearing requirement during the ship moving process is met, the middle pier 3 can be removed, and the specific operation is as follows:

[0050] Step 3.1. Place a crane between the side pier 2 and the middle pier 3;

[0051] Step 3.2. Support the ship body manufacturing platform 1 through the crane hydraulic system, and adjust the pre-supporting force of the crane on the ship body manufacturing platform 1 through the central control system, so that the ship body manufacturing platform 1, the two side piers 2 and the middle pier 3 are lifted as a whole;

[0052] Step 3.3. Remove the connecting bolts of the middle pier 3 and the ship body manufacturing platform 1, remove the middle pier 3, keep the small crane in the lifting state, and then drive the ship handling vehicle to support the ship body at the position of the middle pier 3;

[0053] Step 3.4, the path of the ship mover is set by the central control system, and the transfer of the hull manufacturing platform, the hull, and the two side piers 2 is completed; the transfer of the central pier 3 after being removed is also completed synchronously;

[0054] Step 3.5, after being transferred to the position, the ship mover is controlled to lower the height by the central control system, the hull manufacturing platform 1 is lowered to the central pier 3 together with the hull, and fastening connection is completed.

[0055] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution range of the present application, and equivalent embodiments with equivalent changes can be made. Any simple modification, equivalent replacement, and improvement of the above embodiments, as long as it does not depart from the technical solution content of the present application, is within the scope of protection of the present application.

Claims

1. A method for transferring a ship hull under multiple working conditions with size constraints, characterized in that: The method includes the following steps: Step 1: Install three detachable piers on the lower part of the hull manufacturing platform (1). The three detachable piers include two side support piers (2) and one middle support pier (3). The two side support piers (2) are located at the two ends of the bottom of the hull manufacturing platform (1), and the middle support pier (3) is located between the two side support piers (2) and in the middle section of the bottom of the hull manufacturing platform (1). Step 2: After installing the three detachable piers and the shipbuilding platform (1), the ship is manufactured and installed on the upper part of the shipbuilding platform (1). Step 3: Transfer the hull based on three detachable bridge piers and the hull manufacturing platform (1): In step 3, the specific operation of transferring the hull will be carried out using one of the following two methods: Method 1: When the width of the ship handling vehicle exceeds the net space requirement between the two side supports or the load-bearing capacity is insufficient, The shipbuilding platform (1) was moved by replacing two side support piers (2) and using two ship handling vehicles. The specific operation is as follows: A crane is placed between the side support pier (2) and the middle support pier (3); The shipbuilding platform (1) is supported by the hydraulic system of the crane, and the crane is adjusted by the central control system. The pre-support force of the machine on the hull manufacturing platform (1) causes the hull manufacturing platform (1), two side support piers (2) and one central support pier (3) to move upward as a whole; Remove the connecting bolts between the two side support piers (2) and the shipbuilding platform (1), remove the two side support piers (2), and while keeping the crane in the lifting state, drive the two ship handling vehicles into the original two side support piers (2) to support the ship. By setting the path of the ship handling vehicle through the central control system, the ship manufacturing platform (1), the hull, and... The transfer of the central support pier (3); the transfer of the two side support piers (2) after evacuation is completed simultaneously; After being transferred to the position, the ship handling vehicle is lowered by controlling the central control system to place the hull manufacturing platform (1) together with the hull onto the two side support piers (2) and complete the fastening connection. Method 2: When the width of the ship transport vehicle is less than the net space requirement between the two side supports and meets the load-bearing requirements during the ship relocation process, the ship manufacturing platform (1) is transferred by replacing the middle support (3) and using a ship transport vehicle. The specific operation is as follows: A crane is placed between the side support pier (2) and the middle support pier (3); The shipbuilding platform (1) is supported by the hydraulic system of the crane, and the crane is adjusted by the central control system. The pre-support force of the machine on the hull manufacturing platform (1) causes the hull manufacturing platform (1), two side support piers (2) and one central support pier (3) to move upward as a whole; After removing the connecting bolts between the central support pier (3) and the shipbuilding platform (1), the central support pier (3) is removed. While keeping the small crane in the lifting state, the ship handling vehicle is driven into the original central support pier (3) to support the ship. By setting the path of the ship handling vehicle through the central control system, the ship manufacturing platform, the ship hull, and the two side support piers are completed (2). The transfer; The transfer of the central support pier (3) after evacuation was completed simultaneously; After being transferred to its position, the ship transport vehicle is lowered using the central control system to move the hull manufacturing platform (1) along with the hull. They were placed together on the central support pier (3) and fastened together.

2. The method for transferring a ship hull under multiple working conditions with size constraints according to claim 1, characterized in that: The distance between any two adjacent detachable piers is greater than the width of the crane body.

3. The method for transferring a ship hull under multiple working conditions with size constraints according to claim 1, characterized in that: The hull manufacturing platform (1) is supported by the hydraulic system of the crane, so that the hull manufacturing platform (1) is moved up by 50mm.

4. The method for transferring a ship hull under multiple working conditions with size constraints according to claim 1, characterized in that: Two lifting pads (4) are installed on the lower surface of the hull manufacturing platform (1), and the two lifting pads (4) are located on the upper part of two cranes respectively.

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