Overall lifting device and lifting method for overall salvage of large-tonnage sunken ship

Abstract

The present invention discloses an overall lifting device and a lifting method for the overall salvage of a large-tonnage sunken ship, and belongs to the technical field of sunken ship salvage. The lifting device includes a crane, a hook, a balance wire, a balance beam and equal-length wires. The hook is arranged at the lower part of the crane, and a plurality of lifting points are arranged on the balance beam. The balance wire is wound around and guided through the hook and the lifting point, and each balance wire is wound around and guided through at least two lifting points. The lower part of the lifting point of the balance beam is provided with equal-length wires, and one end of the equal-length wire is connected to the lifting point, and the other end is connected to the lifting point of the hoisted object. The overall lifting method for the overall salvage of a large-tonnage sunken ship of the present invention is supplemented by connecting steel wire ropes, which can meet the requirement that all lifting points of the heavy object are subjected to the same force. In addition, the hook tying method of the crane can meet the requirements of the crane hook angle when hoisting large-tonnage and large-size heavy objects, effectively protect the crane, and prevent the subsequent crane hook angle from being too large.

Description

Technical Field

[0001] The present invention relates to the technical field of shipwreck salvage, and in particular to a method for integrally salvaging and hoisting a large-tonnage shipwreck. Background Art

[0002] In the process of salvaging a sunken ship, a crane will inevitably be used for lifting operations. For heavy objects with relatively large spans, in order to prevent the heavy objects from being deformed due to lifting, multiple lifting points are required for lifting and the force on each lifting point must be relatively uniform. The traditional method is to use multiple points and set multiple steel wires for hooking. However, due to the large span, the length of each steel wire is different, which results in the lifting of heavy objects of different sizes and different numbers of lifting points. It is necessary to individually match a specific length of steel wire rope for lifting, resulting in poor versatility of the steel wire rope. The overall lifting method of the present invention only needs to use two balancing steel wires, assisted by a special hook tying method, to meet the uniform force on the heavy objects, and can meet the overall lifting of large-sized and heavy heavy objects to the greatest extent, and its steel wire rope can also be used for the overall lifting of other heavy objects of different sizes and specifications. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a method for the overall salvage and overall lifting of a large-tonnage sunken ship. The method mainly solves the problem of overall lifting of large-sized and heavy objects, and its wire rope can also be used for the overall lifting of other heavy objects of different sizes and specifications, and can protect the crane to the greatest extent.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an overall lifting device for the overall salvage of a large-tonnage sunken ship, including a crane, a hook, a balance steel wire, a balance beam and equal-length steel wires, the hook is arranged at the lower part of the crane, a plurality of lifting points are arranged on the balance beam, the balance steel wire is wound around and passed through the hook and the lifting point, each balance steel wire is wound around and passed through at least two lifting points, and equal-length steel wires are arranged at the lower part of the lifting point of the balance beam, one end of the equal-length steel wire is connected to the lifting point, and the other end is connected to the lifting point of the lifted object.

[0005] Preferably, the hooks are provided in at least one group, and when two groups are provided, the two groups of hooks are bound together by a hook-binding wire rope.

[0006] Preferably, the upper portion of the hook-binding wire rope is arranged in a figure-8 shape, and the lower end is arranged in a parallel shape.

[0007] Preferably, the hook-binding steel wire rope is a ring-shaped steel wire rope.

[0008] The overall salvage and overall lifting method of a large-tonnage sunken ship comprises the following steps:

[0009] (1) Design the configuration of the lifting sling according to the size, weight and lifting height requirements of the heavy object;

[0010] (2) Calculate the lateral force on the crane hook based on the lifting weight and the configured lifting slings;

[0011] (3) Design the binding method of the hook wire rope according to the shape and size of the crane hook;

[0012] (4) Combine (2) and (3) to determine the diameter of the hook wire rope. The specific calculation method is: Based on the weight F of the heavy object and the sling, combined with the hooking method of the balance wire and the hook tying method of the hook wire, calculate the force on a single balance wire rope as And the lateral force of the crane hook , and then the minimum diameter of the balance wire and the hook wire can be determined, combined with the possibility of subsequent use;

[0013] (5) Before lifting the hook as a whole, tie the crane hook with the hook-tying wire rope;

[0014] (6) The upper part of the hook-binding wire rope adopts an 8-shaped pattern, and the lower end adopts a parallel pattern;

[0015] (7) Connect the object to the lifting sling and then lift it as a whole.

[0016] By adopting the technical solution of the present invention, the following beneficial effects can be obtained:

[0017] The overall salvage and overall lifting method for a large-tonnage shipwreck of the present invention is assisted by connecting steel wire ropes, which can ensure that all lifting points of the heavy object are subjected to the same force. The use method of the balancing steel wire can make the lifting points of the balance beam subjected to the same force, thereby ensuring that each lifting point of the heavy object is subjected to the same force, and this balancing steel wire can also be used for the middle-body lifting of other heavy objects of different sizes, avoiding the inability to use other lifting due to customized steel wire ropes and saving costs; in addition, the crane hook tying method can meet the requirements of the crane hook angle when hoisting large-tonnage and large-sized heavy objects, effectively protect the crane, and use the hook tying wire to tie the two crane hooks together to prevent the subsequent crane hook angle from being too large. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents and symbols in the drawings of this specification:

[0019] Figure 1 It is a schematic diagram of the structure of the hook lifting heavy objects;

[0020] Figure 2 for Figure 1 Left view of

[0021] Figure 3 This is a schematic diagram of the structure of the balance wire winding and threading hook and lifting point;

[0022] Figure 4It is a schematic diagram of the structure of the hook and the hook-binding wire rope.

[0023] The markings in the above figures are: 1. suspended object; 2. balancing beam; 3. balancing steel wire; 4. hook-binding wire rope; 5. crane; 6. hook; 7. lifting point; 8. lifting point of suspended object; 9. steel wire of equal length. DETAILED DESCRIPTION

[0024] The following is a detailed description of the embodiments of the present invention, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, etc., with reference to the accompanying drawings.

[0025] like Figure 1 , 2 As shown, the overall lifting device for salvaging a large-tonnage sunken ship includes a crane 5, a hook 6, a balance wire 3, a balance beam 2 and equal-length wires 9. The hook 6 is arranged at the lower part of the crane 5, and a plurality of lifting points 7 are arranged on the balance beam 2. Figure 3 As shown, the balancing steel wire 3 is wound around and passed through the hook 6 and the hanging point 7. After the balancing steel wire 3 is passed through, the two ends are connected together to form a closed loop. Each balancing steel wire 3 is wound around and passed through at least two hanging points 7. The use of one balancing steel wire 3 to pass through two hanging points 7 can ensure that the force on each steel wire rope is the same, which simplifies the steps of selecting and passing multiple steel wire ropes of different lengths. Equal-length steel wires 9 are arranged at the lower part of the hanging point 7 of the balancing suspension beam 2. One end of the equal-length steel wire 9 is connected to the hanging point 7, and the other end is connected to the hanging point 8 of the suspended object.

[0026] like Figure 2 , 4 As shown, the hook 6 is provided with two groups, and the two groups of hooks 6 are bound by the hook-binding wire rope 4. The upper part of the hook-binding wire rope 4 is in an 8-shaped manner, and the lower end is in a parallel manner, so that the two hooks 6 maintain a suitable distance, so that the two hooks 6 are neither too close nor too far away. The hook-binding wire rope 4 is a circular wire rope. The two hooks of the crane are tied together with the hook-binding wire to prevent the subsequent crane hook from having too large an angle. In addition, the hook-binding method of the crane 5 can meet the requirements of the hook 6 angle when hoisting large-tonnage and large-sized heavy objects, and effectively protect the crane 5.

[0027] The overall salvage and overall lifting method of a large-tonnage sunken ship comprises the following steps:

[0028] (1) Design the configuration of the lifting sling according to the size, weight and lifting height requirements of the heavy object;

[0029] (2) Calculate the lateral force on the crane hook based on the lifting weight and the configured lifting slings;

[0030] (3) Design the binding method of the hook wire rope according to the shape and size of the crane hook;

[0031] (4) Combine (2) and (3) to determine the diameter of the hook wire rope. The specific calculation method is: Based on the weight F of the heavy object and the sling, combined with the hooking method of the balance wire and the hook tying method of the hook wire, calculate the force on a single balance wire rope as And the lateral force of the crane hook , and then the minimum diameter of the balance wire and the hook wire can be determined, combined with the possibility of subsequent use;

[0032] (5) Before lifting the hook as a whole, tie the crane hook with the hook-tying wire rope;

[0033] (6) The upper part of the hook-binding wire rope adopts an 8-shaped pattern, and the lower end adopts a parallel pattern;

[0034] (7) Connect the object to the lifting sling and then lift it as a whole.

[0035] The following example illustrates the specific calculation method of step (4) above. For example, if the designed lifting weight of the object is about 1500t, the conservative calculation of the lifting weight of the single hook must reach 1000t. Figure 1 , 2 The sling configuration and lifting height shown in the figure show that the lateral force on the hook is calculated to be 1000*tan13°=230t. Figure 4 As shown in the hook binding diagram, the diameter of the hook binding wire rope 4 should be greater than 28 mm. Considering the actual situation and subsequent sustainable use, the final diameter of the hook binding wire rope 4 is 84 mm and the length is 24 m.

[0036] like Figure 4 As shown, the hook-tying wire rope 4 adopts the method of annular wire rope eight-shaped winding. The hook-tying wire rope 4 is annular wire rope. The hook-tying wire rope 4 is balanced after being wound around the hook. The upper part of the hook-tying wire rope 4 is wound around the hook 6 in an eight-shaped winding manner, and the lower end of the hook-tying wire rope 4 is parallel. After the hook is tied, according to Figure 1 The sling hook operation is performed, and after being connected to the underwater object 1, the overall lifting operation is performed, which is used for the overall lifting project of large-tonnage sunken ships.

[0037] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A method for integrally salvaging and lifting a large-tonnage sunken ship, using an integral lifting device, characterized in that: The overall lifting device includes a crane, a hook, a balance wire, a balance beam and equal-length wires. A plurality of lifting points are arranged on the balance beam. The balance wires are wound around and passed through the hooks and the lifting points. Each balance wire is wound around and passed through at least two lifting points. Equal-length wires are arranged at the lower part of the lifting points of the balance beam. One end of the equal-length wire is connected to the lifting point, and the other end is connected to the lifting point of the object to be lifted. Two groups of hooks are arranged. The two groups of hooks are bound by hook-binding wire ropes. Two balance beams are arranged. Each group of hooks is connected to a balance beam by a balance wire. The method comprises the following steps: (1) Design the configuration of the lifting sling according to the size, weight and lifting height requirements of the heavy object; (2) Calculate the lateral force on the crane hook based on the lifting weight and the configured lifting slings; (3) Design the binding method of the hook wire rope according to the shape and size of the crane hook; (4) Combine (2) and (3) to determine the diameter of the hook wire rope. The specific calculation method is: based on the weight F of the heavy object and the sling, the angle θ between the equal-length wire and the vertical direction, combined with the hooking method of the balance wire and the hooking method of the hook wire, calculate the force on a single balance wire rope as follows: And the lateral force of the crane hook , based on the actual situation and subsequent sustainable use, determine the minimum diameter of the balance wire and the hook wire; (5) Before lifting the hook as a whole, tie the crane hook with the hook-tying wire rope; (6) The upper part of the hook-binding wire rope adopts an 8-shaped pattern, and the lower end adopts a parallel pattern; (7) Connect the object to the lifting sling and then lift it as a whole.

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