A method for quickly positioning a lifting foundation

Abstract

The application relates to the ship technology field, and particularly discloses a lifting foundation rapid positioning method, which comprises the following steps: drawing a main ship body well center reference line, determining a main ship body well center reference; simulating and matching opening measurement data, pre-finishing a slope opening; lifting and positioning an upper lifting foundation segment and an inclined support segment, and measuring and adjusting and correcting. The application can accelerate the positioning, carrying and lifting efficiency of the lifting foundation, reduce the segment dismounting structure, avoid increasing additional welding work, and shorten the overall installation period.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship technology, in particular to a lifting foundation rapid positioning method. BACKGROUND

[0002] The offshore wind power installation platform is suitable for installation of offshore wind power equipment and has functions such as pile insertion and hoisting. The offshore wind power installation platform is generally provided with four well enclosure assemblies and four sets of gear and rack type lifting systems. Each set of lifting system includes three lifting foundations, three inclined struts and four well enclosure segments. The three lifting foundations form an equilateral triangle structure, the inclined struts are arranged between the adjacent two lifting foundations, and the lifting foundation is divided into upper and lower lifting foundations by a horizontal weld seam 500 mm below the main deck. However, in the prior art, the lifting foundation is installed by the positioning and hoisting method of segmented hoisting, which has the defects of low positioning and hoisting efficiency, increases the additional welding work and prolongs the overall installation period. SUMMARY

[0003] The technical problem to be solved by the present application is how to overcome the defects of low positioning and hoisting efficiency, large additional welding work and long installation period.

[0004] In order to solve the above technical problems, the present application provides a lifting foundation rapid positioning method, comprising the following steps:

[0005] The main hull well enclosure center reference line is drawn to determine the main hull well enclosure center reference;

[0006] The closing opening measurement data is simulated and matched, and the excess allowance groove is pre-welded;

[0007] The upper lifting foundation segment and the inclined strut segment are hoisted and positioned, and measured and adjusted and corrected.

[0008] Further preferably, the closing opening measurement data simulation matching and excess allowance groove pre-welding comprises:

[0009] The closing opening measurement data of the well enclosure lower lifting foundation is simulated and matched, and the excess allowance groove is pre-welded;

[0010] The closing opening measurement data of the upper lifting foundation and the inclined strut is simulated and matched, and the excess allowance groove is pre-welded.

[0011] Further preferably, the upper lifting foundation segment and the inclined strut segment hoisting and positioning comprises:

[0012] The upper lifting foundation segment and the inclined strut segment are hoisted to form a complete ring-shaped three-dimensional structure, and the upper lifting foundation segment and the inclined strut segment are coarsely positioned and fixed.

[0013] Further preferably, the upper lifting foundation segment and the inclined strut segment hoisting and positioning further comprises:

[0014] temporarily welding the inclined brace reinforcement on the upper and lower lifting foundations, hoisting the upper and lower lifting foundations to the closure gap and temporarily fixing the upper and lower lifting foundations, and then loosening the hooks of the gantry crane.

[0015] Further preferably, the step of temporarily welding the inclined brace reinforcement on the upper and lower lifting foundations comprises:

[0016] temporarily installing a first inclined brace reinforcement on the upper and lower lifting foundations, and movably installing a third inclined brace reinforcement at the tail end of the first inclined brace reinforcement away from the upper and lower lifting foundations;

[0017] a hinge block is fixedly arranged on the side of the first inclined brace reinforcement away from the upper and lower lifting foundations, and a threaded pull rod is connected between the hinge block and the third inclined brace reinforcement.

[0018] Further preferably, the step of temporarily welding the inclined brace reinforcement on the upper and lower lifting foundations further comprises:

[0019] a second inclined brace reinforcement is arranged between the first inclined brace reinforcement and the upper and lower lifting foundations.

[0020] Further preferably, the upper and lower lifting foundations are segmented and accurately measured and positioned, the positioning accuracy of the upper and lower lifting foundations is adjusted by thread rotation and extension of the threaded pull rod, and the positioning parameters of the upper and lower lifting foundations are measured and adjusted by triangulation.

[0021] Further preferably, the positioning parameters of the upper and lower lifting foundations include perpendicularity, twist degree, and 120-degree line position, and the adjustment and correction of the upper and lower lifting foundations need to meet the positioning requirements of perpendicularity, twist degree, inclination, and 120-degree line position.

[0022] Further preferably, the step of measuring and adjusting the positioning parameters of the upper and lower lifting foundations by triangulation comprises:

[0023] measuring the 120-degree line of the enclosure with the center reference of the enclosure as the center point;

[0024] measuring the distance from the center of each lifting foundation guide groove to the center reference of the enclosure;

[0025] measuring the distance of the center line of any two lifting foundations;

[0026] measuring the distance from the corners of the lifting foundations to the center reference of the enclosure;

[0027] matching the measurement parameters with the system theoretical parameters, and adjusting and correcting the perpendicularity, inclination, twist degree, and 120-degree line position of the lifting foundations.

[0028] Further preferably, after the positioning parameters of the upper lifting foundation segment meet the positioning requirements, the upper lifting foundation segment and the diagonal brace segment are assembled and welded, and then the upper and lower lifting foundations are fixed in the closing opening, and the closing opening is assembled after the closing opening is fixed, and the diagonal brace segment is synchronously welded and fixed.

[0029] The lifting foundation rapid positioning method has the advantages that the center reference line of the main hull cofferdam is first drawn, the center reference of the main hull cofferdam is determined, the closing opening measurement data is simulated and matched, the excess slope is pre-cut, the upper lifting foundation segment and the diagonal brace segment are hoisted and positioned, and measurement and adjustment and correction are performed, the positioning and hoisting efficiency of the lifting foundation can be accelerated, the disassembly of the segments is reduced, additional welding work is avoided, and the overall installation period is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a step diagram of the lifting foundation rapid positioning method.

[0031] Figure 2 is a schematic diagram of the center reference line drawing of the main hull cofferdam.

[0032] Figure 3 is a schematic diagram of the lifting system and the main hull assembly.

[0033] Figure 4 is an assembly diagram of the lifting foundation and the diagonal brace segment.

[0034] Figure 5 is an assembly diagram of the upper lifting foundation and the diagonal brace reinforcement.

[0035] Figure 6 is a side view of the upper lifting foundation and the diagonal brace reinforcement.

[0036] Figure 7 is a rear view of the upper lifting foundation and the diagonal brace reinforcement.

[0037] Figure 8 is a demonstration diagram of measurement by the triangulation method.

[0038] In the figure: 1, main hull; 2, cofferdam center reference; 3, lifting system; 4, upper lifting foundation; 5, seal row; 6, diagonal brace segment; 7, guide groove center; 8, first diagonal brace reinforcement; 9, third diagonal brace reinforcement; 10, hinge block; 11, threaded pull rod; 12, second diagonal brace reinforcement; 13, diagonal brace reinforcement. DETAILED DESCRIPTION

[0039] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer" and the like indicating the orientation or positional relationship in the present application are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] It should be noted that in the known prior art, each set of lifting system 3 comprises three lifting foundations, three inclined struts and four enclosure segments.

[0043] As shown in Figures 1-4 The present application provides a lifting foundation rapid positioning method, comprising the following steps:

[0044] Step one: draw the main hull 1 enclosure center reference line to determine the main hull enclosure center reference 2;

[0045] Step two: simulate and match the closing opening measurement data, and pre-cut the excess bevel;

[0046] Step three: hoist and position the upper lifting foundation segment and the inclined strut segment, and measure and adjust and correct.

[0047] The embodiment can accelerate the positioning, hoisting and installation efficiency of the lifting foundation, reduce the disassembly of the segments, avoid additional welding work, and shorten the overall installation period.

[0048] In the preferred example of the present application, in step two, the closing opening measurement data simulation matching and excess bevel pre-cutting includes: simulating and matching the closing opening measurement data of the lower lifting foundation of the enclosure, and pre-cutting the excess bevel; simulating and matching the closing opening measurement data of the upper lifting foundation and the inclined strut, and pre-cutting the excess bevel.

[0049] In a preferred embodiment of the present invention, in step three, the hoisting and positioning of the upper lifting base segment 4 and the diagonal brace segment 6 includes: hoisting the upper lifting base segment and the diagonal brace segment to form a complete annular three-dimensional structure, and roughly positioning and fixing the upper lifting base segment and the diagonal brace segment 6.

[0050] In a preferred embodiment of the present invention, in step three, the hoisting and positioning of the upper lifting base segment 4 and the diagonal brace segment 6 further includes: temporarily welding diagonal brace reinforcement 13 to the upper lifting base, hoisting the upper and lower lifting bases to the closing sealing block 5 for temporary fixation, and then releasing the hook of the gantry crane.

[0051] In the above example, the diagonal bracing reinforcement 13 is provided on both sides and the back of the lifting base 4 to ensure that the positioning accuracy of the lifting base segments can be adjusted in multiple directions. The positioning parameters of the lifting base segments are measured and adjusted using the triangulation method, making the operation simpler.

[0052] It should be noted that the term "back side" in the above-mentioned term refers to the end face of the center 7 of the guide groove behind the lifting base 4.

[0053] In the example above, such as Figure 5 As shown, the step of temporarily welding the diagonal brace reinforcement 13 on the upper lifting base includes: temporarily installing the first diagonal brace reinforcement 8 on the upper lifting base 4; movably installing the third diagonal brace reinforcement 9 at the tail end of the first diagonal brace reinforcement 8 on the side away from the upper lifting base 4; fixing the hinge block 10 on the side of the first diagonal brace reinforcement 8 away from the upper lifting base 4; and connecting the hinge block 10 and the third diagonal brace reinforcement 9 with a threaded tie rod 11.

[0054] In the above example, the step of temporarily welding diagonal bracing to reinforce the lifting base further includes: providing a second diagonal bracing 12 between the first diagonal bracing reinforcement 8 and the lifting base 4. It should be noted that the second diagonal bracing reinforcement 12 is connected to the lifting base 4 and / or the first diagonal bracing reinforcement 8 by welding. In this way, when the lifting base is adjusted by rotating the threaded tie rod 11, the angle between the first diagonal bracing reinforcement 8 and the lifting base 4 is always kept constant. The position of the third diagonal bracing reinforcement 9 is adjusted by adjusting the position of the lifting base 4 through the threaded tie rod 11.

[0055] In a preferred embodiment of the present invention, the upper lifting base segment is accurately measured and positioned, the positioning accuracy of the upper lifting base segment is adjusted by rotating and retracting the threaded tie rod 11, and the positioning parameters of the upper lifting base segment are measured and adjusted using the triangulation method.

[0056] In the preferred example of the present application, the positioning parameters of the lifting foundation segment include perpendicularity, twist and 120-degree line position, and the adjustment and correction of the lifting foundation segment need to meet the positioning requirements of perpendicularity, twist, inclination and 120-degree angle line position.

[0057] In the above example, referring to Figure 6 , the step of measuring and adjusting and correcting the positioning parameters of the lifting foundation segment by using triangulation method includes: taking the center reference of the enclosure as the center point, measuring the 120-degree angle line of the enclosure; measuring the distance L1 from each lifting foundation guide groove center 7 to the center measurement reference 2 of the enclosure; measuring the distance L2 of the center connecting line of any two lifting foundations 4; measuring the distance L3 from the corner of the lifting foundation 4 to the center reference 2 of the enclosure; matching the above measurement parameters with the system theoretical parameters, and adjusting and correcting the perpendicularity, inclination, twist and 120-degree angle line position of the lifting foundation to ensure the accurate positioning of the lifting foundation segment and ensure that the closure can meet the installation accuracy requirements.

[0058] In the above example, when the positioning parameters of the lifting foundation segment meet the positioning requirements, the lifting foundation segment 4 and the diagonal brace segment 6 are assembled and welded and fixed, and then the upper and lower lifting foundations are fixed in the closure opening sealing row 5 to complete the closure opening assembly, and the diagonal brace segment 6 is synchronously welded and fixed.

[0059] In summary, the embodiment of the present application provides a lifting foundation rapid positioning method which can speed up the positioning and hoisting efficiency of the lifting foundation, reduce the disassembly of the segmented structure, avoid additional welding work, and shorten the overall installation period.

[0060] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application. The basic principles, main features and advantages of the present application are shown and described above, and it is obvious for those skilled in the art that the present application is not limited to the details of the above preferred embodiment, the embodiments should be considered as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0061] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Furthermore, the method examples, as well as the methods described in order to implement the examples can be implemented by means of at least one computer program, in particular, a computer program on a computer readable medium. The steps of the methods can be implemented as computer program steps which are executed on a computer.

Claims

1. A method for rapid positioning of a lifting foundation, characterized in that, It comprises the following steps: The main hull enclosure center reference line is drawn, and the main hull enclosure center reference is determined; The closing opening measurement data simulation matching and the excess bevel pre-repair cutting are performed; The lifting and lowering foundation segment and the inclined support segment are hoisted and positioned, and the measurement and adjustment correction are performed; The lifting and lowering foundation segment and the inclined support segment are hoisted and positioned, and the measurement and adjustment correction are performed; The inclined support reinforcement is temporarily welded on the lifting and lowering foundation, the upper and lower lifting and lowering foundations are hoisted to the closing opening sealing row for temporary fixing, and the gantry crane is unhooked; The step of temporarily welding the inclined support reinforcement on the lifting and lowering foundation comprises: A first inclined support reinforcement is temporarily installed on the lifting and lowering foundation, and a third inclined support reinforcement is movably installed at the tail end of the side of the first inclined support reinforcement away from the lifting and lowering foundation; A hinge block is fixedly arranged on the side of the first inclined support reinforcement away from the lifting and lowering foundation, and a threaded pull rod is connected between the hinge block and the third inclined support reinforcement; The lifting and lowering foundation segment is accurately measured and positioned, the threaded pull rod is threadedly rotated to adjust the positioning accuracy of the lifting and lowering foundation segment, and the positioning parameters of the lifting and lowering foundation segment are measured and adjusted by using the triangulation method; The step of measuring and adjusting the positioning parameters of the lifting and lowering foundation segment by using the triangulation method comprises: The 120° angle line of the enclosure is measured with the enclosure center reference as the center point; The distance from the center of each lifting and lowering foundation guide groove to the center measurement reference of the enclosure is measured; The distance of the center connecting line of any two lifting and lowering foundations is measured; The distance from the corner of the lifting and lowering foundation to the center reference of the enclosure is measured.

2. The method of claim 1, wherein, The closing opening measurement data simulation matching and the excess bevel pre-repair cutting comprise: The closing opening measurement data simulation matching and the excess bevel pre-repair cutting of the lower lifting and lowering foundation of the enclosure are performed; The closing opening measurement data simulation matching and the excess bevel pre-repair cutting of the upper lifting and lowering foundation and the inclined support are performed.

3. The method of claim 1, wherein, The lifting and lowering foundation segment and the inclined support segment are hoisted and positioned, and the measurement and adjustment correction are performed; The lifting and lowering foundation segment and the inclined support segment are hoisted to form a complete ring-shaped three-dimensional structure, and the lifting and lowering foundation segment and the inclined support segment are coarsely positioned and fixed.

4. The method of claim 1, wherein, The step of temporarily welding the inclined support reinforcement on the lifting and lowering foundation further comprises: A second inclined support reinforcement is arranged between the first inclined support reinforcement and the lifting and lowering foundation.

5. The method of claim 1, wherein, The positioning parameters of the lifting and lowering foundation segment include perpendicularity, twist degree, and 120° angle line position, and the adjustment and correction of the lifting and lowering foundation segment need to meet the positioning requirements of perpendicularity, twist degree, inclination, and 120° angle line position.

6. The method of claim 1, wherein, The measurement parameters are matched with the system theoretical parameters, and the perpendicularity, inclination, twist degree, and 120° angle line position of the lifting and lowering foundation are adjusted and corrected.

7. The method of claim 6, wherein, When the positioning parameters of the lifting and lowering foundation segment meet the positioning requirements, the lifting and lowering foundation segment and the inclined support segment are assembled and welded and fixed, the upper and lower lifting and lowering foundations are fixed in the closing opening sealing row, the closing opening assembly is completed, and the inclined support segment is synchronously welded and fixed.

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