Method for hoisting upper and lower sides of bulk cargo ship by adopting hoisting holes

Abstract

The invention relates to the technical field of ship construction, in particular to a method for hoisting an upper broadside and a lower broadside of a bulk cargo ship by adopting hoisting holes, a plurality of hoisting holes and a plurality of hangers are formed in an upper broadside section and a lower broadside section, and the upper broadside section and the lower broadside section are hoisted through hoisting equipment. The hoisting holes and the mounting hangers are formed in the upper broadside section and the lower broadside section, so that the upper broadside section and the lower broadside section can be directly hoisted during hoisting, and any structure on the upper broadside section and any structure on the lower broadside section do not need to be disassembled. And meanwhile, the integrity of the whole structure of the upper broadside section and the lower broadside section before and after hoisting is guaranteed, so that the hoisting process is simplified, the operation difficulty is reduced, and errors and potential safety hazards possibly caused by dismounting and remounting the structure are avoided. The structural damage to the upper broadside section and the lower broadside section is reduced, meanwhile, the construction efficiency can be remarkably improved, and a new solution is provided for construction and maintenance of the bulk cargo ship.

Description

Technical Field

[0001] The invention relates to the technical field of ship construction, in particular to a lifting method using lifting holes on the upper and lower sides of a bulk carrier. Background Art

[0002] Sectional lifting is an important process in the shipbuilding process, which involves various parts of the hull, including the bottom, side and deck, etc. Through section lifting, various parts of the hull can be assembled in the dock or slipway to form a complete hull.

[0003] The main steps of segmented lifting include:

[0004] Block production: In a workshop or dock, the hull is divided into several blocks and manufactured one by one. These blocks can be the bottom block, side block, deck block, etc.

[0005] Section pre-assembly: After the section production is completed, pre-assembly is carried out to check whether each part meets the design requirements and make necessary adjustments.

[0006] Section lifting: Use a large crane or other lifting equipment to lift the completed sections to the designated location for assembly.

[0007] Overall adjustment: After all sections are hoisted, overall adjustment is carried out to ensure that the hull's lines, dimensions, etc. meet the design requirements.

[0008] Among them, the segmented lifting is crucial for shipbuilding, which can improve construction efficiency, reduce costs and ensure quality. When the segmented lifting is implemented, a large crane or other lifting equipment is required to lift the completed segments to the designated location for assembly. The completed segments include upper side segments and lower side segments. The upper side segment structure includes the top side tank, part of the side outer plate and the large cabin ribs. The lower side segment structure includes the bottom side tank, part of the side outer plate and part of the double bottom. Both the upper side segment and the lower side segment have multiple large cabin rib structures attached to the side outer plate, and the spacing between adjacent large cabin ribs is small.

[0009] When lifting in sections, the upper side sections need to be equipped with lifting weights on the side outer plate and deck (or top tank side plate), and the lower side sections need to be equipped with lifting weights on the side outer plate and inner bottom plate. All lifting weights need to be removed after the lifting is completed. Among them, the lifting weights on the side outer plate are set between two large cabin ribs. During the lifting process, it is necessary to avoid the contact between the large cabin rib panel and the conventional horseshoe-shaped shackles. Therefore, the large cabin ribs near the lifting weights need to be removed before lifting, and the removed large cabin ribs need to be reinstalled after the lifting is completed. Therefore, the removal and reinstallation of this part of the lifting weights will cause a certain amount of man-hour loss in the process implementation and significantly affect the ship construction cycle. Summary of the invention

[0010] In view of the above problems, the purpose of the present invention is to overcome the shortcomings of the prior art and design a lifting method using lifting holes on the upper and lower sides of a bulk carrier.

[0011] To achieve the above object, the present invention provides the following technical solution: a lifting method using lifting holes on the upper and lower sides of a bulk carrier, wherein the upper side segment and the lower side segment are provided with a plurality of lifting holes and a plurality of lifting weights, and the upper side segment and the lower side segment are lifted by a lifting device, and the lifting method using lifting holes on the upper and lower sides of a bulk carrier comprises the following steps:

[0012] Step S1, in the hoisting preparation stage, according to the position of the hoisting holes on the upper side segment and the lower side segment and the diameter of the hoisting holes, a specific special shackle and a hook are configured, and according to the weight and the outer dimensions of the upper side segment and the lower side segment, a suitable hoisting device is selected, the special shackle is detachably installed in the hoisting hole and the hoisting code, and the fixed end of the hook is fixedly connected to the output end of the hoisting device;

[0013] Step S2, at the beginning of the lifting, the other end of the hook is connected with a special shackle, and the upper side segment and the lower side segment are respectively connected to the lifting equipment through the special shackle and the hook;

[0014] Step S3, during the hoisting stage, the upper side segment and the lower side segment are lifted to a designated position by a hoisting device, and the upper side segment and the lower side segment are turned over 90 degrees;

[0015] Step S4, at the stage of completion of lifting, after the lifting is completed, there is no need to remove or repair the lifting holes, only the special shackles need to be removed and all the lifting codes need to be removed to separate the upper side section and the lower side section from the lifting equipment respectively.

[0016] As a preferred embodiment of the present invention, the upper side segmented structure includes a top side tank, a first portion of the side outer plate and a plurality of first large tank ribs, and all of the first large tank ribs are arranged in a straight line on the inner side of the top side tank and the first portion of the side outer plate.

[0017] As a preferred embodiment of the present invention, all the lifting holes arranged on the upper side sections are located on the first large cabin rib, and all the hanging hooks arranged on the upper side sections are located on the top side cabin.

[0018] As a preferred embodiment of the present invention, all the lifting holes arranged on the upper side segment include a first lifting hole and a second lifting hole, and the first lifting hole and the second lifting hole are symmetrically arranged on the top of the first large cabin rib, and all the hanging weights arranged on the upper side segment include a first hanging weight and a second hanging weight, and the first hanging weight and the second hanging weight are symmetrically arranged on the top of the top side cabin.

[0019] As a preferred embodiment of the present invention, in step S2, the hook includes a first hook and a second hook, the first hook is connected with the first hanging weight and the first hanging hole, and the second hook is connected with the second hanging weight and the second hanging hole.

[0020] As a preferred embodiment of the present invention, the lower side segmented structure includes a hopper tank, a second portion of the side outer plate, a portion of the double bottom and a plurality of second large tank ribs, and all of the second large tank ribs are arranged in a straight line on the inner side of the hopper tank and the second portion of the side outer plate.

[0021] As a preferred embodiment of the present invention, all the lifting holes arranged on the lower side sections are located on the second large cabin rib, and all the hanging codes arranged on the lower side sections are located on part of the double bottom.

[0022] As a preferred embodiment of the present invention, all the lifting holes arranged on the lower side segment include a third lifting hole and a fourth lifting hole, and the third lifting hole and the fourth lifting hole are symmetrically arranged on the top of the second large cabin rib, and all the hanging weights arranged on the lower side segment include a third hanging weight and a fourth hanging weight, and the third hanging weight and the fourth hanging weight are symmetrically arranged on the top of the partial double bottom.

[0023] As a preferred embodiment of the present invention, in step S2, the hook includes a third hook and a fourth hook, the third hook is connected with the third lifting hole and the fourth lifting hole, and the fourth hook is connected with the third hanging weight and the fourth hanging weight.

[0024] As a preferred embodiment of the present invention, the ratio of the height of the special shackle to the height of the hanging hole is 1:1.5, and the ratio of the net width of the special shackle to the spacing between adjacent first large cabin ribs is 2:1.

[0025] As a preferred embodiment of the present invention, the ratio of the height of the special shackle to the height of the hanging hole is 1:1.5, and the ratio of the net width of the special shackle to the spacing between the adjacent second large cabin ribs is 2:1.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] In the traditional hoisting method, it may be necessary to first dismantle certain structures on the upper side segment and the lower side segment in order to carry out the hoisting. This method not only increases the operation time and cost, but may also cause damage or errors to the structure. In the method of the present invention, by setting hoisting holes and installing hanging weights on the upper side segment and the lower side segment, the upper side segment and the lower side segment can be directly hoisted when hoisting without dismantling any structure on the upper side segment and the lower side segment. At the same time, the integrity of the overall structure of the upper side segment and the lower side segment before and after hoisting is guaranteed, which not only simplifies the hoisting process and reduces the difficulty of operation, but also avoids errors and safety hazards that may be caused by disassembling and reinstalling the structure. In addition, since this method does not require the upper side segment and the lower side segment to reinstall the disassembled structure back to the initial position after hoisting, possible installation errors and safety hazards are also avoided. This design makes the hoisting process more reliable and efficient, and can reduce the consumption of manpower and material resources and reduce costs.

[0028] In general, the present invention provides a convenient and safe method for lifting the upper and lower sides of a bulk carrier. By arranging lifting holes and installing lifting weights on the upper side segments and the lower side segments, the integrity of the overall structure is ensured before and after lifting. While reducing structural damage to the upper side segments and the lower side segments, the construction efficiency can be significantly improved, providing a new solution for the construction and maintenance of bulk carriers.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 The invention is a three-dimensional structural diagram of the upper side segment in a lifting method using lifting holes on the upper and lower sides of a bulk carrier.

[0032] Figure 2 This is a schematic diagram of the upper side segment structure in a lifting method using lifting holes on the upper and lower sides of a bulk carrier. Figure 1 .

[0033] Figure 3 This is a schematic diagram of the upper side segment structure in a lifting method using lifting holes on the upper and lower sides of a bulk carrier. Figure 2 .

[0034] Figure 4 This is a schematic diagram of the upper side segment structure in a lifting method using lifting holes on the upper and lower sides of a bulk carrier. Figure 3 .

[0035] Figure 5 The present invention is a schematic diagram of three-dimensional lifting of the upper side sections in a lifting method using lifting holes on the upper and lower sides of a bulk carrier.

[0036] Figure 6 The invention discloses a three-dimensional structural diagram of the lower side segment in a lifting method using lifting holes on the upper and lower sides of a bulk carrier.

[0037] Figure 7 This is a schematic diagram of the structure of the lower side section in a lifting method using lifting holes on the upper and lower sides of a bulk carrier. Figure 1 .

[0038] Figure 8 This is a schematic diagram of the structure of the lower side section in a lifting method using lifting holes on the upper and lower sides of a bulk carrier. Figure 2 .

[0039] Fig. 9 This is a schematic diagram of the structure of the lower side section in a lifting method using lifting holes on the upper and lower sides of a bulk carrier. Figure 3 .

[0040] Fig.10 The present invention is a schematic diagram of three-dimensional lifting of the lower side sections in a lifting method using lifting holes on the upper and lower sides of a bulk carrier.

[0041] Fig.11 A method of lifting bulk carriers using lifting holes on the upper and lower sides, with the lower side turning over 90 degrees in sections Figure 1 .

[0042] Fig.12 This is a method of lifting bulk carriers using lifting holes on the upper and lower sides, with the lower side turning over 90 degrees in sections. Figure 2 .

[0043] Reference numerals include:

[0044] Upper side section 1, topside tank 1a, first part of side shell plating 1b, first large tank frame 1c;

[0045] Lower side section 2, hopper tank 2a, second part of side shell plating 2b, part of double bottom 2c, second large tank frame 2d;

[0046] Lifting hole 3, first lifting hole 3a, second lifting hole 3b, third lifting hole 3c, fourth lifting hole 3d;

[0047] Hanging code 4, first hanging code 4a, second hanging code 4b, third hanging code 4c, fourth hanging code 4d;

[0048] Special shackle 5; hook 6, first hook 6a, second hook 6b, third hook 6c, fourth hook 6d. DETAILED DESCRIPTION

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0050] like Figures 1 to 10 As shown, the present invention discloses a method for lifting a bulk carrier using lifting holes on the upper and lower sides, wherein the upper side segment 1 and the lower side segment 2 are provided with a plurality of lifting holes 3 and are installed with a plurality of lifting weights 4. In the structural design stage, the lifting holes 3 are arranged and the lifting weights 4 are installed at the corresponding positions of the lower side segment 2 and the upper side segment 1, and through finite element numerical simulation, it is found that the arrangement of the lifting holes 3 and the lifting weights 4 does not affect the structural load transfer of the upper side segment 1 and the lower side segment 2, and does not cause stress concentration in the structure of the upper side segment 1 and the lower side segment 2. The upper side segment 1 and the lower side segment 2 are lifted by lifting equipment, and the method for lifting a bulk carrier using lifting holes 3 on the upper and lower sides includes the following steps:

[0051] Step S1, in the hoisting preparation stage, according to the position of the hoisting hole 3 on the upper side segment 1 and the lower side segment 2 and the diameter of the hoisting hole 3, a specific special shackle 5 and a hook 6 are configured, and according to the weight and the outer dimensions of the upper side segment 1 and the lower side segment 2, a suitable hoisting device is selected, the special shackle 5 is detachably installed in the hoisting hole 3 and the hoisting code 4, and the fixed end of the hook 6 is fixedly connected to the output end of the hoisting device;

[0052] Step S2, at the beginning of the lifting, the other end of the hook 6 is connected with the special shackle 5, and the upper side section 1 and the lower side section 2 are respectively connected to the lifting equipment through the special shackle 5 and the hook 6;

[0053] Step S3, during the hoisting stage, the upper side segment 1 and the lower side segment 2 are lifted to a designated position by a hoisting device, and the upper side segment 1 and the lower side segment 2 are turned over 90 degrees;

[0054] Step S4, at the stage of completion of lifting, after the lifting is completed, there is no need to remove or repair the lifting holes 3, only the special shackles 5 need to be removed and all the lifting codes 4 need to be removed to separate the upper side section 1 and the lower side section 2 from the lifting equipment respectively.

[0055] In the traditional hoisting method, it may be necessary to first dismantle certain structures on the upper side segment 1 and the lower side segment 2 in order to carry out the hoisting. This method not only increases the operation time and cost, but may also cause damage or errors to the structure. In the method of the present invention, by setting the hoisting holes 3 and installing the hanging code 4 on the upper side segment 1 and the lower side segment 2, the upper side segment 1 and the lower side segment 2 can be directly hoisted when hoisting, without dismantling any structure on the upper side segment 1 and the lower side segment 2. At the same time, the integrity of the overall structure of the upper side segment 1 and the lower side segment 2 before and after hoisting is guaranteed, which not only simplifies the hoisting process and reduces the difficulty of operation, but also avoids the errors and safety hazards that may be caused by disassembling and reinstalling the structure. In addition, since this method does not require the upper side segment 1 and the lower side segment 2 to reinstall the disassembled structure back to the initial position after hoisting, it also avoids possible installation errors and safety hazards. This design makes the hoisting process more reliable and efficient, and can reduce the consumption of manpower and material resources and reduce costs.

[0056] In general, the present invention provides a convenient and safe method for lifting the upper and lower sides of a bulk carrier. By arranging lifting holes 3 and installing lifting weights 4 on the upper side section 1 and the lower side section 2, the integrity of the overall structure is ensured before and after lifting. While reducing structural damage to the upper side section 1 and the lower side section 2, the construction efficiency can be significantly improved, providing a new solution for the construction and maintenance of bulk carriers.

[0057] Further, refer to Figure 1 As shown, the structure of the upper side section 1 includes a top side tank 1a, a first part of the side outer plate 1b and a plurality of first large tank ribs 1c, and all of the first large tank ribs 1c are arranged in a straight line on the inner side of the top side tank 1a and the first part of the side outer plate 1b. This structure can provide better support and stability, making the upper side section 1 more solid and reliable. At the same time, the first large tank ribs 1c arranged in a straight line are also conducive to improving the efficiency and safety of the lifting operation. In practical applications, the structure of the upper side section 1 can be further designed and optimized according to specific needs and conditions.

[0058] Specifically, refer to Figure 2 , Figure 3 and Figure 4As shown, all the hoisting holes 3 arranged on the upper side section 1 are located on the first large tank rib 1c, and all the hanging weights 4 arranged on the upper side section 1 are located on the top side tank 1a. This design ensures the accurate and stable positions of the hoisting holes 3 and the hanging weights 4, and improves the reliability and safety of the hoisting operation. At the same time, by arranging the hoisting holes 3 on the first large tank rib 1c, the load during the hoisting process can be better borne, and the stress concentration and structural deformation can be avoided. And by arranging the hanging weights 4 on the top side tank 1a, the strength and rigidity of the top side tank 1a can be utilized to ensure the stability and accuracy of the hoisting. In practical applications, this design is also conducive to improving the efficiency and accuracy of the hoisting operation, reducing the dependence on additional support structures, and reducing costs and operational difficulties. At the same time, by accurately controlling the positions of the hoisting holes 3 and the hanging weights 4, the integrity of the upper side section 1 and the stability of the structure can be better guaranteed, providing a strong guarantee for the safety and reliability of bulk carriers.

[0059] Specifically, refer to Figure 5 As shown, all the hoisting holes 3 arranged on the upper side segment 1 include a first hoisting hole 3a and a second hoisting hole 3b, and the first hoisting hole 3a and the second hoisting hole 3b are symmetrically arranged on the top of the first large cabin rib 1c. This design further improves the stability and safety of the upper side segment 1 during the hoisting operation. By symmetrically arranging the first hoisting hole 3a and the second hoisting hole 3b on the top of the first large cabin rib 1c, it can be ensured that the upper side segment 1 is subjected to uniform force during the hoisting process, and the structural deformation or damage of the upper side segment 1 due to uneven force can be avoided. All the hanging weights 4 arranged on the upper side segment 1 include a first hanging weight 4a and a second hanging weight 4b, and the first hanging weight 4a and the second hanging weight 4b are symmetrically arranged on the top of the top side tank 1a. This design utilizes the strength and rigidity of the top side tank 1a to ensure the stability and accuracy of the upper side segment 1 during hoisting. By symmetrically arranging the first lifting weight 4a and the second lifting weight 4b on the top of the top side tank 1a, the various forces and torques during the lifting process can be better balanced, and structural damage or instability caused by eccentric loads can be prevented. In general, this symmetrical design further improves the stability and safety of the lifting of the side section 1 on the bulk carrier, and provides a strong guarantee for the safety and reliability of the bulk carrier. At the same time, this design is also conducive to improving the efficiency and accuracy of the lifting operation of the upper side section 1, reducing the cost and difficulty of the operation. In practical applications, the positions of the lifting holes 3 and the lifting weights 4 can be designed and controlled in more detail and accurately according to specific needs and conditions.

[0060] Specifically, refer to Figure 4 and Figure 5As shown, in the step S2, the hook 6 includes a first hook 6a and a second hook 6b, the first hook 6a is connected with the first hanging weight 4a and the first hanging hole 3a, and the second hook 6b is connected with the second hanging weight 4b and the second hanging hole 3b. This design ensures the stability and safety of the upper side segment 1 during the lifting process. By connecting the first hook 6a with the first hanging weight 4a and the first hanging hole 3a, and connecting the second hook 6b with the second hanging weight 4b and the second hanging hole 3b, a stable and reliable lifting system can be established. Specifically, the first hook 6a and the second hook 6b are connected with the first hanging weight 4a and the second hanging weight 4b, respectively, utilizing the strength and rigidity of the hanging weight 4 to ensure the stability and accuracy of the upper side segment 1 during the lifting process. At the same time, the first hook 6a and the second hook 6b are respectively connected with the first lifting hole 3a and the second lifting hole 3b, so that the load of the upper side segment 1 during the lifting process can be evenly distributed on the lifting hole 3, avoiding stress concentration and structural deformation. This design of matching connection further improves the reliability and safety of the lifting of the side segment 1 on the bulk carrier, and reduces the cost and difficulty of operation. In practical applications, the specifications and materials of the appropriate hook 6, hanging code 4 and lifting hole 3 should also be selected according to specific needs and conditions to ensure the stability and safety of the entire lifting system. At the same time, the lifting process should be planned and simulated in detail to avoid possible problems and risks.

[0061] Specifically, refer to Figure 3 As shown, the ratio of the height of the special shackle 5 to the height of the 4 holes of the hanging weight is 1:1.5, and the ratio of the net width of the special shackle 5 to the spacing of the adjacent first large compartment rib 1c is 2:1. This design takes into account the proportional relationship between the special shackle 5, the 4 holes of the hanging weight and the first large compartment rib 1c, which helps to ensure the stability and safety of the lifting process. By setting the ratio of the height of the special shackle 5 to the height of the 4 holes of the hanging weight to 1:1.5, it can be ensured that the cooperation between the special shackle 5 and the 4 holes of the hanging weight is more stable, avoiding shaking or slipping during the lifting process. At the same time, setting the ratio of the net width of the special shackle 5 to the spacing of the adjacent first large compartment rib 1c to 2:1 can better utilize the supporting role of the first large compartment rib 1c and improve the stability and safety of the lifting. The design of this proportional relationship helps to improve the reliability and safety of the upper and lower side lifting of bulk carriers and reduce costs and operational difficulties. In practical applications, the appropriate specifications and proportions of the special shackle 5 and the lifting bracket 4 holes should be selected according to specific needs and conditions to ensure the stability and safety of the entire lifting system. At the same time, the lifting process should be planned and simulated in detail to avoid possible problems and risks.

[0062] Specifically, refer to Figure 6As shown, the structure of the lower side section 2 includes a hopper tank 2a, a second part of the side outer plate 2b, a part of the double bottom 2c and a number of second large tank ribs 2d, and all of the second large tank ribs 2d are arranged in a straight line on the inner side of the hopper tank 2a and the second part of the side outer plate 2b. This structure can provide better support and stability, making the lower side section 2 more solid and reliable. At the same time, the second large tank ribs 2d arranged in a straight line are also conducive to improving the efficiency and safety of the lifting operation. In practical applications, the structure of the lower side section 2 can be further designed and optimized according to specific needs and conditions.

[0063] Specifically, refer to Figure 7 , Figure 8 and Fig. 9 As shown, all the hoisting holes 3 arranged on the lower side segment 2 are located on the second largest cabin rib 2d, and all the hanging weights 4 arranged on the lower side segment 2 are located on the partial double bottom 2c. This design makes full use of the structural characteristics of the lower side segment 2 and improves the reliability and safety of the lower side segment 2 during the hoisting operation. By arranging the hoisting holes 3 on the second largest cabin rib 2d, the strength and rigidity of the second largest cabin rib 2d can be utilized to ensure the reliable transmission of the load during the hoisting process, and avoid the concentration of stress and structural deformation of the lower side segment 2. At the same time, by arranging the hanging weights 4 on the partial double bottom 2c, the supporting effect of the double bottom 2c can be better utilized to improve the stability of the lower side segment 2 during hoisting. This design is also conducive to improving the efficiency and accuracy of the lower side segment 2 in the hoisting operation, reducing the dependence on additional support structures, and reducing costs and operational difficulties. In practical applications, the positions and specifications of the appropriate hoisting holes 3 and hanging weights 4 should be selected according to specific needs and conditions to ensure the stability and safety of the entire hoisting system. At the same time, the lifting process of the lower side section 2 should be planned and simulated in detail to avoid possible problems and risks.

[0064] Specifically, refer to Fig.10As shown, all the hoisting holes 3 arranged on the lower side segment 2 include the third hoisting hole 3c and the fourth hoisting hole 3d, and the third hoisting hole 3c and the fourth hoisting hole 3d are symmetrically arranged on the top of the second large cabin rib 2d. This design further improves the stability and safety of the lower side segment 2 during the hoisting operation. By symmetrically arranging the third hoisting hole 3c and the fourth hoisting hole 3d on the top of the second large cabin rib 2d, it can be ensured that the lower side segment 2 is uniformly stressed during the hoisting process, and the structural deformation or damage of the lower side segment 2 caused by uneven stress can be avoided. All the hanging weights 4 arranged on the lower side segment 2 include the third hanging weight 4c and the fourth hanging weight 4d, and the third hanging weight 4c and the fourth hanging weight 4d are symmetrically arranged on the top of the partial double bottom 2c. This design utilizes the strength and rigidity of the partial double bottom 2c to ensure the stability and accuracy of the lower side segment 2 during hoisting. By symmetrically arranging the third hanging weight 4c and the fourth hanging weight 4d on the top of the partial double bottom 2c, the various forces and torques of the lower side segment 2 during the lifting process can be better balanced, and structural damage or instability caused by eccentric loads can be prevented. In general, this symmetrically arranged design further improves the stability and safety of the lifting of the lower side segment 2 of the bulk carrier, and provides a strong guarantee for the safety and reliability of the bulk carrier. At the same time, this design is also conducive to improving the efficiency and accuracy of the lower side segment 2 during the lifting operation, reducing the cost and difficulty of the operation. In practical applications, the positions of the lifting holes 3 and the hanging weights 4 can be designed and controlled in more detail and accurately according to specific needs and conditions.

[0065] Specifically, refer to Fig. 9 and Fig.10As shown, in step S2, the hook 6 includes a third hook 6c and a fourth hook 6d, the third hook 6c is connected with the third hoisting hole 3c and the fourth hoisting hole 3d, and the fourth hook 6d is connected with the third hanging weight 4c and the fourth hanging weight 4d. This design ensures the stability and safety of the lower side segment 2 during the hoisting process. By connecting the third hook 6c with the third hoisting hole 3c and the fourth hoisting hole 3d, and connecting the fourth hook 6d with the third hanging weight 4c and the fourth hanging weight 4d, a stable and reliable hoisting system can be established. The third hook 6c and the fourth hook 6d are connected with the third hoisting hole 3c and the fourth hoisting hole 3d, respectively, and the strength and rigidity of the hoisting hole 3 are utilized to ensure the stability and accuracy of the lower side segment 2 during hoisting. At the same time, the third hook 6c and the fourth hook 6d are respectively connected with the third lifting weight 4c and the fourth lifting weight 4d, utilizing the strength and rigidity of the lifting weight 4, further improving the stability and safety of the lower side segment 2 during hoisting. This design of coordinated connection further improves the reliability and safety of the lower side segment 2 of the bulk carrier during hoisting, reducing the cost and difficulty of operation. In practical applications, the specifications and materials of the appropriate hooks 6, hoisting holes 3 and lifting weights 4 should be selected according to specific needs and conditions to ensure the stability and safety of the entire hoisting system. At the same time, the hoisting process should be planned and simulated in detail to avoid possible problems and risks.

[0066] Specifically, refer to Figure 8 As shown, the ratio of the height of the special shackle 5 to the height of the 4 holes of the hanging weight is 1:1.5, and the ratio of the net width of the special shackle 5 to the spacing of the adjacent second largest compartment rib 2d is 2:1. This design takes into account the proportional relationship between the special shackle 5, the 4 holes of the hanging weight and the second largest compartment rib 2d, which helps to ensure the stability and safety of the lifting process. By setting the ratio of the height of the special shackle 5 to the height of the 4 holes of the hanging weight to 1:1.5, it can be ensured that the cooperation between the special shackle 5 and the 4 holes of the hanging weight is more stable, avoiding shaking or slipping during the lifting process. At the same time, setting the ratio of the net width of the special shackle 5 to the spacing of the adjacent second largest compartment rib 2d to 2:1, the supporting role of the second largest compartment rib 2d can be better utilized to improve the stability and safety of the lifting. The design of this proportional relationship helps to improve the reliability and safety of the upper and lower side lifting of bulk carriers, and reduce costs and operational difficulties. In practical applications, the appropriate specifications and proportions of the special shackle 5 and the lifting bracket 4 holes should be selected according to specific needs and conditions to ensure the stability and safety of the entire lifting system. At the same time, the lifting process should be planned and simulated in detail to avoid possible problems and risks.

[0067] Specifically, refer to Fig.11 and Fig.12As shown, when the lower side segment 2 (part of the double bottom 2c is against the ground) is turned over by 90°, the third hook 6c is connected with the third hoisting hole 3c and the fourth hoisting hole 3d, and the fourth hook 6d is connected with the third hanging weight 4c and the fourth hanging weight 4d. Then the hoisting device controls the fourth hook 6d to lift the third hanging weight 4c and the fourth hanging weight 4d, and moves the fourth hook 6d in the turning direction until the lower side segment 2 stops after turning over by 90°, and the 90° turning over of the lower side segment 2 is completed (after turning over, the second part of the side outer plate 2b is against the ground). For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A method for lifting bulk carriers using lifting holes on the upper and lower sides, characterized in that: The upper side segment (1) and the lower side segment (2) are provided with a plurality of lifting holes (3) and are installed with a plurality of lifting weights (4). The upper side segment (1) and the lower side segment (2) are lifted by lifting equipment. The lifting method using the lifting holes (3) on the upper and lower sides of the bulk carrier comprises the following steps: Step S1, in the hoisting preparation stage, in combination with the position of the hoisting hole (3) on the upper side segment (1) and the lower side segment (2) and the diameter of the hoisting hole (3), a specific special shackle (5) and a hook (6) are configured, and according to the weight and the outer dimensions of the upper side segment (1) and the lower side segment (2), a suitable hoisting device is selected, the special shackle (5) is detachably mounted in the hoisting hole (3) and the hoisting code (4), and the fixed end of the hook (6) is fixedly connected to the output end of the hoisting device; Step S2, at the beginning of the lifting, the other end of the hook (6) is connected to the special shackle (5), and the upper side section (1) and the lower side section (2) are respectively connected to the lifting equipment through the special shackle (5) and the hook (6); Step S3, during the hoisting stage, the upper side segment (1) and the lower side segment (2) are lifted to a designated position by a hoisting device, and the upper side segment (1) and the lower side segment (2) are turned over by 90 degrees; Step S4, at the stage of completion of lifting, after the lifting is completed, there is no need to remove or repair the lifting hole (3), only the special shackle (5) needs to be removed and all the lifting codes (4) need to be removed to separate the upper side section (1) and the lower side section (2) from the lifting equipment respectively.

2. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claim 1, characterized in that: The upper side segment (1) structure comprises a top side tank (1a), a first part of the side outer plate (1b) and a plurality of first large tank ribs (1c), and all of the first large tank ribs (1c) are arranged in a straight line on the inner side of the top side tank (1a) and the first part of the side outer plate (1b).

3. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claim 2, characterized in that: All the hanging holes (3) arranged on the upper side section (1) are located on the first large cabin rib (1c), and all the hanging hooks (4) arranged on the upper side section (1) are located on the top side cabin (1a).

4. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claim 3, characterized in that: All the hoisting holes (3) arranged on the upper side section (1) include a first hoisting hole (3a) and a second hoisting hole (3b), and the first hoisting hole (3a) and the second hoisting hole (3b) are symmetrically arranged on the top of the first large cabin rib (1c); all the hanging weights (4) arranged on the upper side section (1) include a first hanging weight (4a) and a second hanging weight (4b), and the first hanging weight (4a) and the second hanging weight (4b) are symmetrically arranged on the top of the top side cabin (1a).

5. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claims 1 and 4, characterized in that: In step S2, the hook (6) includes a first hook (6a) and a second hook (6b), wherein the first hook (6a) is connected in cooperation with the first hanging weight (4a) and the first hanging hole (3a), and the second hook (6b) is connected in cooperation with the second hanging weight (4b) and the second hanging hole (3b).

6. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claim 1, characterized in that: The lower side section (2) structure includes a hopper tank (2a), a second part of the side outer plate (2b), a part of the double bottom (2c) and a plurality of second large tank ribs (2d), and all of the second large tank ribs (2d) are arranged in a straight line on the inner side of the hopper tank (2a) and the second part of the side outer plate (2b).

7. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claim 6, characterized in that: All the hanging holes (3) arranged on the lower side section (2) are located on the second largest cabin rib (2d), and all the hanging codes (4) arranged on the lower side section (2) are located on part of the double bottom (2c).

8. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claim 7, characterized in that: All the hoisting holes (3) arranged on the lower side section (2) include a third hoisting hole (3c) and a fourth hoisting hole (3d), and the third hoisting hole (3c) and the fourth hoisting hole (3d) are symmetrically arranged on the top of the second large cabin rib (2d); all the hanging weights (4) arranged on the lower side section (2) include a third hanging weight (4c) and a fourth hanging weight (4d), and the third hanging weight (4c) and the fourth hanging weight (4d) are symmetrically arranged on the top of a part of the double bottom (2c).

9. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claims 1 and 8, characterized in that: In step S2, the hook (6) includes a third hook (6c) and a fourth hook (6d), wherein the third hook (6c) is connected in cooperation with the third hanging hole (3c) and the fourth hanging hole (3d), and the fourth hook (6d) is connected in cooperation with the third hanging weight (4c) and the fourth hanging weight (4d).

10. A method for lifting bulk carriers using lifting holes on the upper and lower sides according to claims 1 and 2, characterized in that: The ratio of the height of the special shackle (5) to the height of the hole of the hanging code (4) is 1:1.5, and the ratio of the clear width of the special shackle (5) to the spacing between the adjacent first large compartment ribs (1c) is 2:1; the ratio of the height of the special shackle (5) to the height of the hole of the hanging code (4) is 1:1.5, and the ratio of the clear width of the special shackle (5) to the spacing between the adjacent second large compartment ribs (2d) is 2:1.

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