WO2021218202A1

WO2021218202A1 - Anchor bed structure of ship and machining method therefor

Info

Publication number: WO2021218202A1
Application number: PCT/CN2020/139280
Authority: WO
Inventors: 谢锋雷; 徐智; 刘坤兵; 沈强昇
Original assignee: 江苏扬子鑫福造船有限公司
Priority date: 2020-04-28
Filing date: 2020-12-25
Publication date: 2021-11-04
Also published as: CN111532379B; CN111532379A

Abstract

An anchor bed structure of a ship. A hawse pipe (1) penetrates a main deck (6) and a shell plate (7) and is connected to the main deck and the shell plate in a welded manner; an anchor bed panel (3) is mounted on the lower end face of the hawse pipe (1) in a welded manner; a hawse (11) is provided at the center of the anchor bed panel (3); eight bracket groups are evenly distributed and mounted on an outer wall of the lower end of the hawse pipe (1); each bracket group is composed of an inner bracket (8) and an outer bracket (9), the inner bracket (8) and the outer bracket (9) being coplanar and being coplanar with the axis of the hawse pipe (1); the inner bracket (8) is welded to the hawse pipe (1) and the shell plate (7); the outer bracket (9) is welded to an anchor bed wrapper plate (2) and the anchor bed panel (3); and an anchor bell mouth (4) is mounted on the bottom face of the anchor bed panel (3) in a welded manner. A machining method for the anchor bed structure of a ship comprises the steps of: a, manufacturing the hawse pipe (1); b, manufacturing an anchor bed; c, positioning the hawse pipe (1) and mounting the inner bracket (8); and d, mounting the anchor bed wrapper plate (2). The anchor bed structure and the machining method are accurate in terms of positioning, and facilitate a reduction in the construction period.

Description

Ship anchor structure and processing method thereof

Technical field

The invention relates to the field of ship construction, in particular to a ship anchor platform structure and a processing method thereof.

Background technique

Nowadays, the load capacity of ships is getting larger and larger, and the corresponding ship size and specifications of various parts are also increasing, and the corresponding manufacturing process and installation difficulty are also gradually increasing. At present, shipyards use the deck as the tire to turn over and build, and the anchor can be assembled and welded on the segment. For example, the anchor spans two segments and the normal bulk construction is carried out in the general assembly of the segment, which greatly reduces the anchor platform. High-altitude operations and advance construction, shorten the slipway cycle. However, because the anchor is on the outer surface of the hull shell, and the hull is a three-dimensional curved surface, the construction of the anchor can only be carried out after the segmented internal components and the hull shell are assembled. It is cumbersome and requires multiple positioning. If the positioning is not accurate, it will easily lead to rework and scrapping of the outer panel.

Summary of the invention

In order to solve the defects of complicated process and easy rework in the prior art that the chain cylinder is constructed in the segmented stage, the purpose of the present invention is to provide a structure of a ship anchor platform with accurate positioning and reduced construction period and a processing method thereof.

In order to achieve the above objectives, the technical solutions adopted by the present invention are as follows:

A ship anchor platform structure, comprising an anchor chain tube, an anchor platform package plate, an anchor platform panel, a bracket plate and an anchor lip. On the lower end of the chain cylinder, there is an anchor chain hole in the center of the anchor platform panel. The outer wall of the lower end of the chain cylinder is uniformly installed with 8 bracket groups, and the bracket group is composed of an inner bracket and an outer bracket. The inner bracket and the outer bracket are in the same plane and coplanar with the axis of the anchor chain cylinder; the inner bracket is welded to the anchor chain cylinder and the outer plate, and the outer bracket is connected to the anchor plate and the anchor The platform board is welded, and an anchor lip is welded and installed on the bottom surface of the anchor platform board.

Further, a gap is provided between the inner and outer brackets, the inner brackets of the three groups of brackets under the outer wall of the chain cylinder are provided with arc-shaped notches, and the inner brackets with the arc-shaped notches and the corresponding outer brackets The pieces form a curved hole.

Further, the anchor chain cylinder is composed of two semi-cylinders assembled and welded.

Still further, the bottom surface of the anchor lip is a circular arc surface.

A method for processing a ship anchor structure, which is characterized in that it includes the following steps:

(1) The production of anchor chain cylinder: the processing workshop cuts two semi-cylindrical bodies in the numerical control, sprays powder on the outside of the two semi-cylindrical bodies to mark the position of the quarter line of each semi-cylindrical body, and uses these eight positions After marking the bulging points, process them; after the two semi-cylindrical bodies are welded and assembled into an anchor chain cylinder, check the positions of the eight equal points again and correct the markings with the bulging points as the eight points;

(2) The production of the anchor platform: the anchor platform package plate and the anchor platform panel are numerically cut, and the eight equal division marks of the anchor chain cylinder are marked on the anchor platform package plate and the anchor platform panel. After the inspection is qualified, make a permanent gun line for the powder spraying mark; match the powder spraying line at the eight-division position of the anchor platform cladding plate with the positioning line on the anchor platform panel, and the lower line of the anchor platform cladding plate The type is based on the contour line of the anchor plate. The upper mouth of the anchor plate is determined by the marking template of the outer plate to determine the opening of the plate, and the upper mouth is fixed with external support. After the anchor plate is positioned, the anchor plate and the anchor plate are fixed. The anchor plate package plate is welded and fixed and the outer bracket plate is installed. The outer bracket plate should be positioned according to the corresponding position line on the anchor plate panel and combined with the installation angle template. First, spot weld 8 outer bracket plates on the inner wall of the anchor plate panel. At the same time, the positioning line of the outer bracket is marked on the front of the anchor platform panel to mark the position of the blunt point, as the aligning line of the segmented anchor platform; mark 4 equal points on the anchor lip cast steel, and use the anchor lip Position the quartet points of the anchor plate with the corresponding position line on the anchor panel; use the heating device to preheat the metal at the butt weld of the anchor lip, and the preheating temperature of the steel casting will reach 100 ℃-150 ℃, and then weld and weld After completion, use thermal insulation materials to keep warm and slow cooling; to polish the welding seams of the anchor chain tube, the anchor plate, the anchor plate, the outer bracket and the anchor lip;

(3) The positioning of the chain cylinder and the installation of the inner bracket: on the segmented forward deck, main deck and outer slab, determine the center of the chain cylinder according to the center coordinates of the chain cylinder, and map the chain Permanently mark the center line and the long and short axis of the pipe, and then make a hole at the center of each hole; the outer plate opening is based on the scoring and the periphery is retracted 50mm to the center, and the outer plate opening line is drawn from the outside to the center. The inner side of the outer plate; at the same time, draw the positioning line of the 8 inner brackets for the anchor chain cylinder installation. This positioning line should extend at least 200mm from the outer contour line of the anchor platform; this line is used as the alignment line for subsequent installation of the anchor platform; The chain cylinder is poured from the bow deck through the main deck from top to bottom until it extends out of the outer plate. Check whether the intersecting line of the chain cylinder and the outer plate is consistent with the original line drawn on the template; according to the chain cylinder layout drawing and anchor lip drawing Determine the length of the anchor chain cylinder extending from the outer plate with the cross-line model of the outer plate of the anchor platform package plate, and ensure that the center line of the anchor chain cylinder extends 1550mm from the outer plate. The distance that the cylinder extends from the outer plate on each section is marked to ensure the installation angle of the anchor platform; the angle of the anchor chain cylinder is measured after the cylinder is positioned, and the margin of the cylinder is welded or cut after qualified; the anchor chain cylinder is connected to the bow Weld the floor deck, main deck and outer plate separately, and weld the inner bracket to the chain cylinder according to the anchor lip drawing and the positioning line on the chain cylinder/outer plate;

(4) The installation of the anchor plate package: the anchor plate is positioned under the condition of ensuring the center of the chain tube and the length of the eight section positions. The eight section position lines of the anchor plate shall be aligned with the corresponding line of the outer plate. Coinciding, after the anchoring platform is positioned, copy the installation angles of the eight cross-sectional positions of the anchoring platform, and modify the margin of the anchoring platform after confirming that the angle is correct. After the anchoring platform is installed and positioned, weld it to the outer plate Fix, while welding and fixing the lower end surface of the anchor chain barrel with the anchor platform panel.

After adopting the above technical solution, the beneficial effects of the present invention are: the anchor structure is strengthened by the bracket grouping, which can effectively prevent deformation, and through multiple positioning and corrections during the construction process, the installation of each component of the anchor is ensured Accuracy, low installation difficulty, easy construction, and shorten the construction period.

Description of the drawings

Figure 1 is a schematic diagram of the installation structure of the chain cylinder;

Figure 2 is a schematic diagram of the structure of the anchor plate;

Figure 3 is a schematic diagram of the structure of the 0°-180° cross-section bracket;

Figure 4 is a schematic diagram of the 45°-225° cross-section bracket;

Figure 5 is a schematic diagram of the 90°-270° cross-section bracket;

Figure 6 is a schematic structural diagram of a 135°-315° cross-section bracket;

Figure 7 is a schematic diagram of the scribing on the surface of the outer panel.

In the picture: Anchor chain cylinder 1, Anchor plate 2, Anchor plate 3, Anchor lip 4, Fore deck 5, Main deck 6, Outer plate 7, Inner bracket 8, Outer bracket 9, Arc-shaped notch 10. Anchor chain hole 11.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings:

As shown in Figure 1, a ship anchoring platform structure is composed of an anchor chain cylinder 1, an anchor platform cladding plate 2, an anchor platform panel 3, 8 pairs of brackets and an anchor lip 4. The anchor chain cylinder 1 is welded by two semi-cylinders The anchor chain tube 1 passes through the bow deck 5, the main deck 6 and the outer plate 7 in turn, and is welded to the above three plates. The upper end of the anchor chain tube 1 is flush with the bow deck 5, and the anchor chain tube The lower end surface of 1 protrudes from the outer panel 7. The anchor plate 3 is welded and installed on the lower end surface of the anchor chain cylinder 1. The anchor plate 3 is provided with an anchor chain hole 11 corresponding to the inner hole of the anchor chain cylinder 1, and an anchor pack is installed between the anchor plate 3 and the outer plate 7. The bottom surface contour of the anchor plate 2 and the anchor plate 2 corresponds to the outer contour of the anchor plate 3 and is welded, and the top surface of the anchor plate 2 is welded to the outer plate 7. As shown in Figure 3-6, the outer wall of the lower end of the anchor chain cylinder 1 is uniformly installed with 8 bracket groups. The bracket group is composed of an inner bracket 8 and an outer bracket 9. The inner bracket 8 and The outer bracket 9 is in the same plane and coplanar with the axis of the chain cylinder 1; the inner bracket 8 is welded to the chain cylinder 1 and the outer plate 7, and the outer bracket 9 is welded to the anchor plate 2 and the anchor plate 3. There is a gap between the inner bracket 8 and the outer bracket 9. The inner bracket at 225°, 270°, and 315° on the chain cylinder 1 is provided with arc-shaped notches 10, and the inner bracket with arc-shaped notches 10 8 and the corresponding outer bracket 9 form an arc-shaped hole. The anchor lip 4 is welded and installed on the bottom surface of the anchor platform panel 3, and the bottom surface of the anchor lip 4 is a circular arc circle to avoid scratching the anchor when the anchor lip contacts the anchor.

The construction method of the ship anchor structure is:

1. The production of anchor chain barrel:

(1) The processing workshop cuts two semi-cylindrical bodies on the CNC, and uses the powder spraying program in the cutting command to mark the parts of the anchor chain cylinder 1 at 90°-270°, 135°- 315°, 180°-0°, 225°-45° four sections, 90°, 135°, 180°, 225°, 270°, 315°, 0°, 45° eight points with powder spray line Spray it on the part, and mark the positions of these eight points with horn points for processing;

(2) The cylinder body of the anchor chain cylinder 1 is abutting between two semi-cylindrical bodies. When a semicircle with an inner radius of 550mm is processed, the butt joint position must be smooth to avoid protrusions or depressions. If there is a difference in plate thickness , The difference should be placed on the outside of the chain cylinder 1 to ensure that the inside of the chain cylinder 1 is flat;

(3) After the anchor chain cylinder 1 is assembled, check again the four sections of 90°-270°, 135°-315°, 180°-0°, 225°-45°, 90°, 135°, 180°, 225 The correctness of the positions of the eight points of °, 270°, 315°, 0°, and 45° and correction of the mark of the position of the eight points with the foreign gun point.

2. The production of anchor platform:

(1) Positioning and installation of anchor plate 2 and outer bracket 9:

1) The anchor plate 2 and the anchor plate 3 are CNC blanked, and the outer bracket 9 installation line is marked by the powder spraying, the assembly line of the processing sample box, and the bracket installation line is made permanent after the package plate is processed and inspected. The blunderbuss are then sent to be installed in sections.

2) Before anchoring board 2 is positioned, first check the accuracy of the powder spraying line at the 8 outer bracket 9 positions on the anchor board according to the wood sample of the anchor board; after the inspection is completed, 90°, 270°, 0°, 180° The position is the reference, and the powder spraying line at the eight profile positions (0, 45°, 90°, 135°, 180°, 225°, 270°, 315°) on the anchor plate 2 and the anchor plate 3 The positioning lines correspond one-to-one. The line type of the lower opening of the anchor plate 2 is based on the contour line of the anchor plate 3, and the upper opening of the anchor plate 2 determines the anchor according to the profile data provided by the sample platform and the outer plate marking template. The opening of the platform package plate, and the upper opening is fixed with a support, and the anchor platform panel 3 and the anchor platform package plate 2 are welded and fixed.

3) Install the outer bracket 9 after the initial positioning of the anchor plate 2 90°, 135°, 180°, 225°, 270°, 315°) 8 external brackets 9 are spot welded on the anchor plate 3, if they do not match the corresponding position line of the bracket on the anchor plate 2 The anchor plate 2 is subject to the marking, adjust the position of the outer bracket 9 and weld and fix it after passing the inspection; at the same time, the positioning line of the outer bracket 9 is marked on the front of the anchor plate 2. Used as the aligning line of the segmented anchoring platform.

(2) Positioning and installation of anchor lip 4:

1) Carry out inspection and acceptance on the shape of the anchor lip 4 cast steel, and check whether the contact plane of the anchor lip 4 and the anchor plate 3 and the welding fracture meet the requirements. The accuracy requirements are implemented with reference to GB6414-1999, CT13, and the main inspection dimensions are: ① the outer dimension of the lower mouth ± 10mm; ② the level of the lower mouth ± 5mm; ③ the working surface error ± 5mm.

2) According to the anchor plate 3 marking template provided by the sample station, mark the four cross-sectional position lines of 90°, 270°, 45°, 225°, 0°, 180°, 135°, 315° on the anchor plate 3 .

3) According to the anchor chain barrel layout drawing and anchor lip drawing, first locate the four position marks on the anchor lip casting steel at 90°, 270°, 0°, and 180° and the corresponding position line on the panel. Pay attention when positioning The anchor lip 4 is divided into left and right.

4) Preheat the metal and adjacent steel plates at the weld of anchor lip 5, the preheating temperature of the steel casting reaches 100 degrees to 150 degrees, and it is heated by wrapping the heating pad. After the temperature is reached, it is welded and fixed, and then used after the welding is completed. Insulation material keeps warm and cools slowly.

5) Polish the welding seams of the anchor chain cylinder 1, the anchor plate 2, the anchor plate 3, the outer bracket 9 and the anchor lip 4.

3. Positioning and installation of anchor chain cylinder 1 and installation of inner bracket 8

1) On the bow deck 5, determine the center of the cylinder according to the center coordinates of the anchor chain tube on the bow deck 5 opening template provided by the sample platform, and map the center line, long and short axis of the chain tube, and do Permanently mark, and then open a small hole in the center of the hole with a size appropriate to the design value.

2) According to the main deck 6 marking template provided by the sample platform, determine the center of the cylinder on the theoretical opening center coordinates of the main deck 6, and then open a small hole with the design value at the center of the hole.

3) According to the anchor chain tube outer plate 7 provided by the sample platform, the center coordinates of the anchor chain tube on the on-site opening template are mapped out. The plate hole line is drawn from the outside to the inside of the outer plate. At the same time, the positioning line of the eight inner brackets 8 installed on the anchor chain cylinder 1 is drawn. This positioning line should extend at least 200mm from the outer contour line of the anchor platform. This line is used as a follow-up Installed butt wire.

4) Pour the chain cylinder 1 from the fore deck 5 through the main deck 6 from top to bottom until it protrudes out of the outer plate 7. Check whether the intersecting line of the chain cylinder and the outer plate is consistent with the original marking according to the template, confirm Then, the anchor chain cylinder 1 is welded to the bow deck 5, the main deck 6 and the outer plate 7 respectively.

5) Determine the length of the chain cylinder extending from the outer plate according to the chain cylinder layout drawing, the anchor lip drawing and the cross-line model of the outer plate of the anchor plate package plate, and ensure that the centerline of the chain cylinder extends 1550mm from the outer plate (theoretical surface distance of the outer plate) ), according to the marking positions of the eight bludgeon points on the anchor chain cylinder, mark the following distances of the cylinder body extending from the outer plate on the eight sections (the inner side of the cylinder body is away from the outer surface of the outer plate): 90°=1151mm, 270°= 1424mm, 225°=1481mm, 45°=1115mm, 180°=1433mm, 0°=1175mm, 135°=1303mm, 315°=1728mm, so as to ensure the installation angle of the anchor platform. The above data guarantees the positive tolerance, in order to ensure the tension The gap between the anchor tip and the outer plate after the anchor has a 50mm margin added to the chain cylinder. The workshop should add an installation margin according to the theoretical size to ensure the installation angle of the anchor platform (see Figure 7).

6) Measure the angle of the anchor chain cylinder 1 after positioning, and only after the inspection is qualified, can the margin of the cylinder body be welded/cut, and the angle deviation is less than 0.2°.

7) Install the inner bracket 8 of the anchor chain barrel by welding and installing the inner bracket 8 of the anchor chain barrel according to the anchor lip drawing and the positioning line on the anchor chain barrel/outer plate, and the completion deviation is less than 10mm.

Fourth, the installation of the anchor plate package:

(1) Under the condition of ensuring the center of the chain cylinder 1 and the length of the eight cross-sectional positions, locate the anchor plate 2 and the eight cross-sectional position lines on the anchor plate 2 must coincide with the corresponding alignment lines on the outer plate 7.

(2) After anchoring the anchor plate 2 is positioned, copy the installation angles of the eight sections of the anchor plate according to the external card template, and modify the margin of the anchor plate 2 after confirming the angle to ensure that the anchor is pulled. The gap between the anchor tip and the outer plate.

(3) Welding and fixing the anchor plate 2 and the outer plate 7, and at the same time welding and fixing the lower end surface of the anchor chain, 1 and the anchor plate 3.

Claims

A ship anchor platform structure, comprising an anchor chain tube, an anchor platform package plate, an anchor platform panel, a bracket plate and an anchor lip. The anchor chain hole is provided on the lower end of the anchor chain cylinder and the center of the anchor platform panel. It is characterized in that the outer wall of the lower end of the anchor chain cylinder is uniformly installed with 8 bracket groups, and the bracket group consists of an inner bracket and an outer bracket. The inner bracket and the outer bracket are coplanar and coplanar with the axis of the anchor chain barrel; the inner bracket is welded to the anchor chain barrel and the outer plate, and the outer bracket is connected to the anchor platform The package plate and the anchor plate are welded, and an anchor lip is welded and installed on the bottom surface of the anchor plate.
The ship anchor structure according to claim 1, wherein a gap is provided between the inner and outer brackets, and the inner brackets of the three sets of brackets below the outer wall of the anchor chain tube are provided with arc-shaped notches, The inner bracket with the arc-shaped notch and the corresponding outer bracket form an arc-shaped hole.
The ship anchor platform structure according to claim 1, wherein the anchor chain cylinder is composed of two semi-cylinders assembled and welded.
The ship anchor platform structure according to claim 1, wherein the bottom surface of the anchor lip is a circular arc surface.
The method for processing a ship's anchorage structure according to claim 1, characterized in that it comprises the following steps:

(1) The production of anchor chain cylinder: the processing workshop cuts two semi-cylindrical bodies in the numerical control, sprays powder on the outside of the two semi-cylindrical bodies to mark the position of the quarter line of each semi-cylindrical body, and uses these eight positions After marking the bulging points, process them; after the two semi-cylindrical bodies are welded and assembled into an anchor chain cylinder, check the positions of the eight equal points again and correct the markings with the bulging points as the eight points;

(2) The production of the anchor platform: the anchor platform package plate and the anchor platform panel are numerically cut, and the eight equal division marks of the anchor chain cylinder are marked on the anchor platform package plate and the anchor platform panel. After the inspection is qualified, make a permanent gun line for the powder spraying mark; match the powder spraying line at the eight-division position of the anchor platform cladding plate with the positioning line on the anchor platform panel, and the lower line of the anchor platform cladding plate The type is based on the contour line of the anchor plate. The upper mouth of the anchor plate is determined by the marking template of the outer plate to determine the opening of the plate, and the upper mouth is fixed with external support. After the anchor plate is positioned, the anchor plate and the anchor plate are fixed. The anchor plate package plate is welded and fixed and the outer bracket plate is installed. The outer bracket plate should be positioned according to the corresponding position line on the anchor plate panel and combined with the installation angle template. First, spot weld 8 outer bracket plates on the inner wall of the anchor plate panel. At the same time, the positioning line of the outer bracket is marked on the front of the anchor platform panel to mark the position of the blunt point, as the aligning line of the segmented anchor platform; mark 4 equal points on the anchor lip cast steel, and use the anchor lip Position the quartet points of the anchor plate with the corresponding position line on the anchor panel; use the heating device to preheat the metal at the butt weld of the anchor lip, and the preheating temperature of the steel casting will reach 100 ℃-150 ℃, and then weld and weld After completion, use thermal insulation materials to keep warm and slow cooling; to polish the welding seams of the anchor chain tube, the anchor plate, the anchor plate, the outer bracket and the anchor lip;

(3) The positioning of the chain cylinder and the installation of the inner bracket: on the segmented forward deck, main deck and outer slab, determine the center of the chain cylinder according to the center coordinates of the chain cylinder, and map the chain Permanently mark the center line and the long and short axis of the pipe, and then make a hole at the center of each hole; the outer plate opening is based on the scoring and the periphery is retracted 50mm to the center, and the outer plate opening line is drawn from the outside to the center. The inner side of the outer plate; at the same time, draw the positioning line of the 8 inner brackets for the anchor chain cylinder installation. This positioning line should extend at least 200mm from the outer contour line of the anchor platform; this line is used as the alignment line for subsequent installation of the anchor platform; The chain cylinder is poured from the bow deck through the main deck from top to bottom until it extends out of the outer plate. Check whether the intersecting line of the chain cylinder and the outer plate is consistent with the original line drawn on the template; according to the chain cylinder layout drawing and anchor lip drawing Determine the length of the anchor chain cylinder extending from the outer plate with the cross-line model of the outer plate of the anchor platform package plate, and ensure that the center line of the anchor chain cylinder extends 1550mm from the outer plate. The distance that the cylinder extends from the outer plate on each section is marked to ensure the installation angle of the anchor platform; the angle of the anchor chain cylinder is measured after the cylinder is positioned, and the margin of the cylinder is welded or cut after qualified; the anchor chain cylinder is connected to the bow Weld the floor deck, main deck and outer plate separately, and weld the inner bracket to the chain cylinder according to the anchor lip drawing and the positioning line on the chain cylinder/outer plate;

(4) The installation of the anchor plate package: the anchor plate is positioned under the condition of ensuring the center of the chain tube and the length of the eight section positions. The eight section position lines of the anchor plate shall be aligned with the corresponding line of the outer plate. Coinciding, after the anchoring platform is positioned, copy the installation angles of the eight cross-sectional positions of the anchoring platform, and modify the margin of the anchoring platform after confirming that the angle is correct. After the anchoring platform is installed and positioned, weld it to the outer plate Fix, while welding and fixing the lower end surface of the anchor chain barrel with the anchor platform panel.