Angle control method for integrated construction of ship anchor platform

Abstract

The invention discloses an angle control method for integrated building of a ship anchor platform. The method comprises the steps that foundation lines and trepanning construction are conducted; hoisting the hawse pipe; the hawse pipe positioning and angle verification comprises the steps that the hawse pipe is inserted into a deck to be folded to complete positioning, and after the hawse pipe is welded, an anchor mouth and an anchor table are positioned; the anchor mouth and the anchor table are positioned and verified, and it is guaranteed that the hawse pipe slope and the anchor table panel are located in the same plane. According to the method, the precision quality of the anchor mouth and anchor platform integrated construction anchoring system angle is ensured, the cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship engineering, and in particular to a method for controlling the construction angle of an integrated ship anchor platform. Background Art

[0002] In order to ensure the stability and reliability of the ship's mooring system, improve the safety of the ship in the moored state in the marine environment, ensure the anchor angle when lifting and dropping anchor, effectively reduce the tension of the anchor chain, make the ship more stable and safe, and to avoid the anchor claw hitting the wall, the anchor chain twisting, the chain climbing and other phenomena when pulling the anchor, it is particularly important to improve the accuracy of the anchor angle.

[0003] In the traditional anchor system construction method, the anchor lip and anchor platform are built separately and then assembled, which makes the construction process complicated and difficult to ensure the precise coordination between the components. With the advancement of integrated construction, the anchor lip and anchor platform are built as a whole structure, which can improve the construction efficiency, but also brings new challenges to the control of the anchor angle accuracy.

[0004] When a ship is sailing at sea, the accuracy of the anchoring angle is directly related to the stability and reliability of the ship during anchoring and anchoring operations. If there is a deviation in the anchoring angle, the grip and positioning effect of the anchor in the water will be greatly reduced, which may cause the ship to move when moored, or even face the risk of dragging the anchor, endangering the safety of the ship and personnel. At the same time, an inaccurate anchoring angle will also cause abnormal wear between the anchor chain and the anchor lip and anchor platform, shortening the service life of the anchor system and increasing the cost of ship operation and maintenance.

[0005] In addition, with the continuous improvement of ship design standards and the increasingly stringent requirements of international maritime regulations on ship safety and stability, ship companies must not only meet regulatory standards, but also improve their own competitiveness. The development of a high-precision anchor angle control method can not only ensure the quality of ship construction and meet the operational needs of ships in various complex sea conditions, but also improve the company's technical level and reputation in the field of shipbuilding and enhance its competitiveness in the international market. This is also an important background for the development of an anchor angle accuracy control method under the integrated construction of anchor lip and anchor platform. This method focuses on solving the accuracy control method of the anchor angle under the integrated construction of anchor lip and anchor platform. Summary of the invention

[0006] The object of the present invention is to provide a method for controlling the angle of an integrated ship anchor platform, so as to ensure the precision and quality of the anchoring angle under the integrated construction of the anchor lip anchor platform, reduce costs and improve production efficiency.

[0007] The technical solution to achieve the above purpose is:

[0008] A method for controlling the angle of an integrated ship anchor platform construction, comprising:

[0009] Step S1, basic lines and opening construction;

[0010] Step S2, hoisting the anchor chain barrel;

[0011] Step S3, positioning and angle verification of the anchor chain tube, inserting the anchor chain tube into the deck for alignment and positioning, and positioning the anchor lip and anchor platform after welding of the anchor chain tube is completed;

[0012] Step S4, positioning and verifying the anchor lip anchor platform to ensure that the inclined surface of the anchor chain tube and the anchor platform panel are in the same plane.

[0013] Preferably, an NC line is designed for the anchor chain tube, including a waterline extension line, a rib line extension line, an outer plate joining line, and a deck joining line.

[0014] Preferably, when designing the interface between the anchor chain tube and the anchor platform, the elliptical section is cut using CNC cutting.

[0015] Preferably, an NC line is designed for the anchor panel, and the anchor opening is made by numerical control.

[0016] Preferably, the opening of lines and holes in the outer plate in step S1 requires the cooperation of a total station and a template respectively.

[0017] Preferably, the step S1 comprises:

[0018] The center line, rib position line and waterline of the segmented anchor machine shall be located by total station according to the design drawings;

[0019] The outer plate related lines are positioned with auxiliary templates;

[0020] The holes are opened by the sample method, the cutting method is selected according to the thickness of the board and the edges are processed.

[0021] Preferably, when the anchor chain tube is hoisted in step 2, it is first ensured that the waterline and rib position line on the anchor chain tube are aligned with the waterline and rib position line on the outer plate and deck.

[0022] Preferably, inserting the anchor chain tube into the deck for alignment in step S3 means: ensuring that the alignment line is aligned with the outer plate alignment line.

[0023] Preferably, after the anchor chain tube positioning is completed in step S3, a total station should be used for verification.

[0024] Preferably, in step S4, ensuring that the inclined surface of the anchor chain tube and the anchor platform panel are in the same plane includes: cutting and adjusting the coaming until the inclined surface of the anchor chain tube and the anchor platform panel are in the same plane, thereby completing the adjustment.

[0025] Preferably, the completion of adjustment means the completion of positioning, and after the positioning is completed, a total station is used to perform three-dimensional verification of the waterline and the rib position line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a flow chart of the angle control method for the integrated construction of a ship anchor platform of the present invention;

[0027] Figure 2 It is a basic line schematic diagram in the present invention;

[0028] Figure 3 It is another basic line schematic diagram in the present invention;

[0029] Figure 4 is a cross section of the anchoring system of the present invention;

[0030] Figure 5 It is a schematic diagram of the alignment of the anchor chain barrel line with the outer plate and the deck line in the present invention;

[0031] Figure 6 is a schematic diagram of the angles between the anchor lip, the anchor platform and the horizontal plane in step S4 of the present invention; DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] See also Figure 1 The ship anchor platform integrated construction angle control method of the present invention comprises the following steps:

[0034] Step S1, the center line, waterline, rib position line of the segmented anchor machine and the rib position line, waterline and opening of the outer plate are constructed according to the original method, wherein the outer plate opening line and opening need to cooperate with the total station and the template respectively, such as Figure 2 and Figure 3 As shown, it is ensured that the central sections of the anchor windlass, chain stopper, anchor chain barrel, anchor platform and anchor lip are in the same parallel plane without centerline bending or twisting.

[0035] The center line, rib position line and waterline of the segmented anchor machine are measured based on the design drawings using a total station to establish the measurement benchmark. For the center line of the segmented anchor machine, obtain the coordinate data to mark the positioning point and then connect the line to determine it. When determining the waterline and rib position line, use the reference plane as a reference, measure and mark point by point according to the given values ​​on the drawings, and review the process to strictly control the error; make a thin metal plate template according to the outer plate expansion drawing, fit it to the outer plate to be constructed area, and use a scriber and a square to mark the rib position line and waterline according to the template markings. The template must be adapted and adjusted for the curved part of the outer plate; make a perforated template according to the design, and mark along the edge after fixing it. Use CNC flame cutting for thick plates and plasma cutting for thin plates. Grind the edges after cutting to remove burrs, iron oxide and other impurities.

[0036] Step S2, see Figure 4, the NC line of the anchor chain barrel is designed, including the waterline extension line, the rib line extension line, the outer plate joint line, and the deck joint line, to solve the problem of the anchor chain barrel size L. The ship design software is used to combine the overall structure and anchor system layout to calculate the position and direction of the NC line of the anchor chain barrel, including the waterline extension line, the rib line extension line, the outer plate joint line, and the deck joint line, and simulate to ensure accurate docking. Knock out sample punch marks on the corresponding parts of the anchor chain barrel for subsequent docking.

[0037] The interface between the anchor chain tube and the anchor platform is designed as an elliptical section. The 3D model data is input into the CNC cutting equipment. The equipment is monitored by a laser measuring device during cutting to ensure the accuracy of the section. This elliptical section is used as a reference surface to solve the problem of the angle P between the center of the anchor chain tube and the bottom plate of the anchor platform. The standard is 0.2° and the limit is 0.3°.

[0038] When hoisting the anchor chain barrel, first ensure that the waterline and rib position line on the anchor chain barrel are aligned with the waterline and rib position line on the outer plate and deck. Figure 5 shown.

[0039] Step S3, see Figure 4 , slowly insert the anchor chain barrel into the deck. During this process, the focus is on ensuring that the alignment line on the anchor chain barrel is accurately aligned with the alignment line of the outer plate. During the alignment process, use high-precision measuring tools, such as gap measuring instruments, to measure the gap between the two alignment lines in real time to ensure that the gap is uniform and controlled within a very small range. When the alignment lines are fully aligned, use a temporary fixing device to initially fix the anchor chain barrel on the deck. The fixing position should be selected at the key stress point of the anchor chain barrel to prevent displacement during subsequent operations.

[0040] After positioning is completed, the angle of the anchor chain barrel is accurately verified using a total station. By measuring the three-dimensional coordinates of four specific points on the waterline and rib position line on the oblique section of the anchor chain barrel, the measurement data is input into the professional angle calculation software. The software automatically calculates the actual angle of the anchor chain barrel according to the preset algorithm to solve the problem of the angle M between the anchor lip, anchor platform, and the center of the anchor chain barrel and the horizontal plane. The standard requires that it be controlled within ±0.3°, and the limit error is 0.5°. If the calculated angle is within the standard range, it means that the installation angle of the anchor chain barrel meets the design requirements; if the angle exceeds the standard range, the position of the anchor chain barrel needs to be fine-tuned. During the fine-tuning process, high-precision jacks and other tools are used to accurately adjust the displacement of the anchor chain barrel according to the calculated deviation value, and then the total station is used again to measure and verify until the angle meets the requirements. According to the above process, the angle accuracy of the anchor chain barrel can basically reach 100% standard without the need for secondary adjustment. After the angle verification is completed and meets the requirements, the anchor chain barrel is formally welded and fixed.

[0041] Step S4, see Figure 6When positioning the anchor lip anchor platform, first of all, it is necessary to ensure that the waterline and rib position lines on the anchor platform panel are accurately aligned with the waterline and rib position lines on the anchor chain barrel. By setting high-precision positioning marks and measuring tools, such as optical centering devices, at the marks of the waterline and rib position lines, ensure that the lines are completely overlapped in the horizontal and vertical directions. At the same time, it is necessary to ensure that the inclined surface of the anchor chain barrel and the anchor platform panel are in the same plane. In actual operation, a high-precision flatness measuring instrument is used to monitor the flatness of the two in real time. If unevenness is found between the two, the coaming of the anchor platform needs to be precisely cut and adjusted. During the cutting process, the coaming is precisely cut using CNC cutting equipment based on the deviation data fed back by the flatness measuring instrument. The flatness is measured again after each cutting until the inclined surface of the anchor chain barrel and the anchor platform panel are completely in the same plane to complete the positioning of the anchor lip and anchor platform.

[0042] After the positioning is completed, the total station is used to perform three-dimensional verification of the waterline and rib position line. The total station measures the three-dimensional coordinates of multiple key points and compares and analyzes them with the theoretical coordinates in the design drawings to determine the accuracy of the positioning. After adopting this method, more than 90% of the segments can achieve 100% qualification in the three-dimensional verification, and there is no need for secondary disassembly and positioning. This positioning method can effectively solve the problem of the angle E between the anchor lip, anchor platform and the horizontal plane. The angle accuracy standard is controlled within 0.2°, and the limit error is 0.3°. During the verification process, if it is found that the angle deviation exceeds the allowable range, the position of the anchor lip and anchor platform needs to be fine-tuned. The fine-tuning method is similar to the previous one. Through precise measurement and calculation, professional tools are used to make adjustments until the accuracy requirements are met.

[0043] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A method for controlling the angle of an integrated ship anchor platform, characterized in that: include: Step S1, basic lines and opening construction; Step S2, hoisting the anchor chain barrel; Step S3, positioning and angle verification of the anchor chain tube, inserting the anchor chain tube into the deck for alignment and positioning, and positioning the anchor lip and anchor platform after welding of the anchor chain tube is completed; Step S4, positioning and verifying the anchor lip anchor platform to ensure that the inclined surface of the anchor chain tube and the anchor platform panel are in the same plane.

2. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 1, characterized in that: The NC line is designed for the anchor chain tube, including the waterline extension line, the rib line extension line, the outer plate joint line and the deck joint line.

3. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 2, characterized in that: When designing the interface between the anchor chain tube and the anchor platform, the elliptical section is cut by numerical control, and when designing the NC line for the anchor platform panel, the anchor platform opening is opened by numerical control.

4. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 1, characterized in that: In step S1, the opening of lines and holes in the outer plate requires the cooperation of a total station and a sample.

5. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 4, characterized in that: The step S1 comprises: The center line, rib position line and waterline of the segmented anchor machine shall be located by total station according to the design drawings; The outer plate related lines are positioned with auxiliary templates; The holes are opened by the sample method, the cutting method is selected according to the thickness of the board and the edges are processed.

6. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 1, characterized in that: When the anchor chain tube is hoisted in step 2, first ensure that the waterline and rib position line on the anchor chain tube are aligned with the waterline and rib position line on the outer plate and deck.

7. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 1, characterized in that: Inserting the anchor chain tube into the deck for alignment in step S3 means: ensuring that the alignment line is aligned with the outer plate alignment line.

8. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 1, characterized in that: After the anchor chain barrel is positioned in step S3, a total station should be used for verification.

9. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 1, characterized in that: In step S4, ensuring that the inclined surface of the anchor chain tube and the anchor platform panel are in the same plane includes: cutting and adjusting the coaming until the inclined surface of the anchor chain tube and the anchor platform panel are in the same plane, and the adjustment is completed.

10. The method for controlling the angle of the integrated construction of a ship anchor platform according to claim 9, characterized in that: The completion of adjustment means that the positioning is completed. After the positioning is completed, a total station is used to perform three-dimensional verification of the waterline and the rib position line.

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