Method for transferring ship body borne by multiple working conditions under limited size

Abstract

The invention discloses a multi-working-condition bearing ship body transferring method under the limited size, and aims to solve the problem that a traditional ship body transferring method is limited under large ships, narrow sites and complex working conditions, and the requirement of modern engineering for size diversification of the ship body transferring method is difficult to meet The multi-working-condition bearing ship body transferring method comprises the steps that 1, three detachable bridge piers are installed on the lower portion of a ship body manufacturing platform 1, the three piers are located on the left section, the middle section and the right section of the lower portion of the hull manufacturing platform respectively. 2, the ship body is manufactured and installed on the upper portion of the ship body manufacturing platform; and 3, the ship body is transferred based on the detachable bridge piers and the ship body manufacturing platform. The detachable bridge piers are installed at the bottom of the ship body manufacturing platform, equipment with large occupied area such as a gantry crane and a large sliding rail is optimized, and the safety of the transferring process can be considered while the transferring work under the condition that the site is limited is guaranteed. The method is suitable for ship engineering, port construction and other scenes.

Description

Technical Field

[0001] The invention relates to a hull transfer method for carrying multiple loads under limited size, and belongs to the technical field of engineering construction. Background Art

[0002] In the shipping industry, the transfer of hulls is a crucial link, which runs through all stages of ship construction, maintenance, modification and daily operations. However, with the continuous increase in ship size and the limitation of construction and maintenance sites, the challenges in the hull transfer process are becoming increasingly prominent. Especially in limited spaces such as ports, docks or shipyards, how to complete the hull transfer efficiently and safely has become an urgent problem to be solved in the industry.

[0003] Traditional methods of hull transfer often rely on large floating cranes, gantry cranes or tugboats, but these methods have many limitations in practical applications. For example, floating cranes and gantry cranes have limited operating ranges and high site requirements, making it difficult to operate flexibly in narrow areas. Although tugboats can move freely in the water, it is difficult to ensure stability and safety during towing when there are strong winds and waves or significant changes in water levels.

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

[0005] What is more complicated is that the hull transfer is often affected by a variety of working conditions, such as wind direction, wind speed, tide, water flow, temperature changes, etc. These factors will not only affect the smooth progress of the transfer process, but may also cause damage to the hull or cause safety accidents. Therefore, when developing new hull transfer methods, the impact of these working conditions must be fully considered and corresponding measures must be taken to deal with them. Summary of the invention

[0006] In order to solve the limitations of traditional hull transfer methods in large ships, narrow sites and complex working conditions, and to make it difficult to meet the size diversification requirements of modern engineering, the present invention proposes a hull transfer method with multi-condition load-bearing capacity under size constraints, so as to achieve the safe transfer of the hull under the condition of limited size of the transfer site.

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

[0008] The method for transferring a hull under multi-condition load-bearing conditions under size restriction of the present invention comprises the following steps:

[0009] Step 1: Install three detachable piers at the bottom of the hull manufacturing platform, wherein the three detachable piers include two side piers and one middle pier, the two side piers are respectively located at two ends of the bottom of the hull manufacturing platform, and the middle pier is located between the two side piers and in the middle section of the bottom of the hull manufacturing platform;

[0010] Step 2: After installing the three detachable piers and the hull manufacturing platform, 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 hull and local parts. The hull is fixed on the manufacturing platform with 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 hull manufacturing platform.

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

[0013] Step 3.1 Place a crane between the side pier and the middle pier;

[0014] Step 3.2: The hull manufacturing platform is supported by the hydraulic system of a small crane, and the pre-support force of the crane on the hull manufacturing platform is adjusted by the central control system, so that the hull manufacturing platform, two side piers and one middle pier are moved 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 lifting state, and drive two ship transport vehicles into the two original side piers to support the hull;

[0016] Step 3.4: Set the path of the ship transporter through the central control system to complete the transfer of the hull manufacturing platform, hull and middle pier; and simultaneously complete the transfer of the two side piers after evacuation;

[0017] After the transfer in step 3.5, the central control system is used to control the ship handling vehicle to lower the height of the flat plate, and the hull manufacturing platform together with the hull is placed on the two side piers and fastened.

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

[0019] Step 3.1 Place a crane between the side pier and the middle pier;

[0020] Step 3.2: The hull manufacturing platform is supported by the hydraulic system of a small crane, and the pre-support force of the crane on the hull manufacturing platform is adjusted by the central control system, so that the hull manufacturing platform, two side piers and one middle pier are moved upward as a whole;

[0021] Step 3.3 After removing the connecting bolts between the middle pier and the hull manufacturing platform, remove the middle pier, keep the small crane in the lifting state, and drive the ship handling vehicle into the original middle pier to support the hull;

[0022] Step 3.4 sets the path of the ship transport vehicle through the central control system to complete the transfer of the hull manufacturing platform, the hull and the two side piers; and simultaneously completes the transfer of the evacuated middle pier;

[0023] After the transfer in step 3.5, the central control system is used to control the ship transporter to descend, and the hull manufacturing platform together with the hull is placed on the middle pier and fastened.

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

[0025] Furthermore, the hull manufacturing platform is supported by the crane hydraulic system so that the hull manufacturing platform is moved up 50 mm as a whole.

[0026] Furthermore, two jacking pads are installed on the lower surface of the hull manufacturing platform, and the two jacking pads are respectively located on the upper parts of the two cranes.

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

[0028] 1. The present invention designs a hull transfer method with multiple load-bearing conditions under limited size, which can transfer the hull under the condition of limited site size. After testing, the hull transfer method with multiple load-bearing conditions under limited size designed by the present invention can realize the safe transfer of small boat hulls and partial hulls of large ships;

[0029] 2. The present invention optimizes the equipment with large floor space, such as gantry cranes and large slide rails, by installing detachable piers at the bottom of the hull manufacturing platform, thereby ensuring the transfer work under site-constrained conditions while taking into account the safety of the transfer process;

[0030] 3. The present invention carries out the processing, assembly, connection, docking and undocking of the hull on a detachable platform, saving transfer time and cost;

[0031] 4. The present invention adopts the transfer strategy involved in step 3 and realizes the synchronization of the transfer equipment through the central control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the detachable bridge pier of the present invention;

[0033] Figure 2 yes Figure 1 AA section view;

[0034] Figure 3 yes Figure 1 BB cross-sectional view.

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

[0036] Specific implementation method 1: This implementation method is a multi-condition ship transfer method with limited size, which is suitable for the scenarios where the lifting and transfer capacity is insufficient, the lifting height is limited (≤100mm), the width of the ship transfer flatbed truck is limited, and rapid lifting, transfer and placement are required. It specifically includes the following steps:

[0037] Step 1: Use the hull manufacturing platform 1 as the bridge deck, and install three detachable bridge piers at the bottom of the hull manufacturing platform 1. The three detachable bridge piers include two side piers 2 and one middle pier 3. The two side piers 2 are respectively located at the two ends of the bottom of the hull manufacturing platform 1, and the middle pier 3 is located between the two side piers 2 and in the middle section of the bottom of the hull manufacturing platform 1. The three bridge piers are detachably connected to the hull manufacturing platform 1 through connecting bolts 5. The height of the hull manufacturing platform 1 is controlled to ensure that the bridge deck is level, and the manufacturing platform surface is stabilized by the gravity of the hull manufacturing platform 1 and the hull. The detachable bridge pier structure is as follows: Figures 1 to 3 shown.

[0038] Step 2: After installing the three detachable piers and the hull manufacturing platform 1, the hull is manufactured and installed on the upper part of the hull manufacturing platform 1, including the connection, assembly, welding and other work of the whole hull and local parts, and the hull is fixed on the hull manufacturing platform 1 with a clamp to ensure the overall stability of the platform and the hull during the processing.

[0039] Step 3: Transfer the hull based on the detachable bridge piers and hull manufacturing platform. In step 3, two solutions can be used to transfer the ship according to different situations. If the width of the ship handling vehicle is greater than the clear space requirement between the two side piers, or the carrying capacity is insufficient, it is necessary to arrange ship handling vehicles on both sides to lift and transfer the hull. At this time, it is necessary to replace the side piers and use two ship handling vehicles to transfer the hull. 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: The hull manufacturing platform 1 is supported by the crane hydraulic system, and the pre-support force of the crane on the hull manufacturing platform 1 is adjusted by the central control system, so that the hull manufacturing platform 1, the two side piers 2 and the one middle pier 3 are moved upward as a whole;

[0042] Step 3.3: Remove the connecting bolts between the two side piers 2 and the hull manufacturing platform 1, remove the two side piers 2, keep the crane in the jacking state, and drive two ship transport vehicles into the two original side piers 2 to support the hull;

[0043] Step 3.4 sets the path of the ship transport vehicle through the central control system to complete the transfer of the hull manufacturing platform 1, the hull and the middle pier 3; and simultaneously completes the transfer of the two side piers 2 after evacuation;

[0044] After the transfer in step 3.5, the central control system is used to control the ship transporter to descend, and the hull manufacturing platform 1 together with the hull is placed on the two side piers 2 and fastened.

[0045] Preferably, the side piers and the middle piers can be evacuated by using a forklift-type tool, and the ship transporter can be transported by using a flatbed truck for moving ships.

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

[0047] Preferably, the hull manufacturing platform 1 is supported by a crane hydraulic system so that the hull manufacturing platform 1 is moved upward by 50 mm as a whole.

[0048] Preferably, two lifting pads 4 are installed on the lower surface of the hull manufacturing platform 1, and the two lifting pads 4 are respectively located on the upper parts of the two small cranes. The installation of the lifting pads 4, on the one hand, when the crane lifts the hull manufacturing platform 1 and the hull together, due to the heavy weight and heavy load, the lifting part needs to be strengthened; on the other hand, the lifting pads 4 are used to ensure the posture during lifting and maintain stability.

[0049] Specific implementation method 2: This implementation method is different from the specific implementation method 1 in that, if the width of the ship handling vehicle is smaller than the clear space requirement between the two side piers and meets the load-bearing requirements during the ship transfer process, the solution of replacing the middle pier 3 can be selected, 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: The hull manufacturing platform 1 is supported by the crane hydraulic system, and the pre-support force of the crane on the hull manufacturing platform 1 is adjusted by the central control system, so that the hull manufacturing platform 1, the two side piers 2 and the one middle pier 3 are moved upward as a whole;

[0052] Step 3.3 After removing the connecting bolts between the middle pier 3 and the hull manufacturing platform 1, the middle pier 3 is evacuated, and the ship handling vehicle is driven into the original middle pier 3 to support the hull while keeping the small crane in the lifting state;

[0053] Step 3.4 sets the path of the ship transport vehicle through the central control system to complete the transfer of the hull manufacturing platform, the hull and the two side piers 2; and simultaneously completes the transfer of the evacuated middle pier 3;

[0054] After the transfer in step 3.5, the central control system is used to control the ship transport vehicle to descend, and the hull manufacturing platform 1 together with the hull is placed on the middle pier 3 and fastened.

[0055] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A hull transfer method with multi-load bearing under size restriction, characterized by: The method comprises the following steps: Step 1: Install three detachable bridge piers at the bottom of the hull manufacturing platform (1), wherein the three detachable bridge piers include two side piers (2) and one middle pier (3), wherein the two side piers (2) are respectively located at two ends of the bottom of the hull manufacturing platform (1), and the middle pier (3) is located between the two side piers (2) and in the middle section of the bottom of the hull manufacturing platform (1); Step 2: After installing the three detachable bridge piers and the hull manufacturing platform (1), the hull is manufactured and installed on the upper part of the hull manufacturing platform (1); Step 3: Transfer the hull based on the three detachable piers and the hull manufacturing platform (1).

2. A hull transfer method with multi-load bearing under size restriction according to claim 1, characterized in that: In step 3, the specific operations for transferring the hull are as follows: Step 3.1: Place a crane between the side pier (2) and the middle pier (3); Step 3.2: The hull manufacturing platform (1) is supported by the hydraulic system of the crane, and the pre-support force of the crane on the hull manufacturing platform (1) is adjusted by the central control system, so that the hull manufacturing platform (1), the two side piers (2) and the one middle pier (3) are moved upward as a whole; Step 3.3: Remove the connecting bolts between the two side piers (2) and the hull manufacturing platform (1), remove the two side piers (2), keep the crane in the jacking state, and drive two ship transport vehicles into the two original side piers (2) to support the hull; Step 3.4: Set the path of the ship transport vehicle through the central control system to complete the transfer of the hull manufacturing platform (1), the hull and the middle pier (3); and simultaneously complete the transfer of the two side piers (2) after evacuation; After the transfer in step 3.5, the central control system is used to control the ship transport vehicle to descend, and the hull manufacturing platform (1) together with the hull is placed on the two side piers (2) and fastened together.

3. The method for transferring a hull under multi-condition load-bearing conditions under size restriction according to claim 1, characterized in that: In step 3, the specific operations for transferring the hull are as follows: Step 3.1: Place a crane between the side pier (2) and the middle pier (3); Step 3.2: The hull manufacturing platform (1) is supported by the hydraulic system of the crane, and the pre-support force of the crane on the hull manufacturing platform (1) is adjusted by the central control system, so that the hull manufacturing platform (1), the two side piers (2) and the one middle pier (3) are moved upward as a whole; Step 3.3 After removing the connecting bolts between the middle pier (3) and the hull manufacturing platform (1), the middle pier (3) is evacuated, and the small crane is kept in the jacking state, and the ship handling vehicle is driven into the original middle pier (3) to support the hull; Step 3.4: Set the path of the ship transport vehicle through the central control system to complete the transfer of the hull manufacturing platform, the hull and the two side piers (2); and simultaneously complete the transfer of the evacuated middle pier (3); After the transfer in step 3.5, the central control system is used to control the ship transport vehicle to descend, and the hull manufacturing platform (1) together with the hull is placed on the middle pier (3) and the connection is completed.

4. A method for transferring a hull under multi-condition loads under size constraints according to claim 2 or 3, characterized in that: The distance between each two adjacent detachable piers is greater than the width of the crane body.

5. A method for transferring a hull under multi-condition loads under size constraints according to claim 2 or 3, characterized in that: The hull manufacturing platform (1) is supported by a crane hydraulic system so that the hull manufacturing platform (1) is moved upward by 50 mm as a whole.

6. A method for transferring a hull under multi-condition loads under size constraints according to claim 2 or 3, characterized in that: Two jacking pads (4) are installed on the lower surface of the hull manufacturing platform (1), and the two jacking pads (4) are respectively located on the upper parts of two cranes.

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