CN108202846B - Positioning method for secondary docking of ship - Google Patents
Positioning method for secondary docking of ship Download PDFInfo
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- CN108202846B CN108202846B CN201611169433.5A CN201611169433A CN108202846B CN 108202846 B CN108202846 B CN 108202846B CN 201611169433 A CN201611169433 A CN 201611169433A CN 108202846 B CN108202846 B CN 108202846B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C1/00—Dry-docking of vessels or flying-boats
- B63C1/10—Centring devices
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Abstract
The invention relates to a method for positioning secondary docking of a ship, which is used for accurately positioning the secondary docking of the ship by surveying a positioning datum line (2), setting a first positioning point (3), a second positioning point (5), a third positioning point (7) and a fourth positioning point (8) and matching with a total station (9). The positioning method for secondary docking of the ship has the advantages of simple and convenient operation, shortened production period and cost saving.
Description
Technical Field
The invention relates to the field of ship construction and maintenance, in particular to a positioning method for secondary docking of a ship.
Background
In the modern shipbuilding industry, ships need to be pulled into docks for construction, mainly including dry docks and floating docks, so that the ships need to be docked for positioning.
With the technological progress, the application of the total station in the field of ship building and repairing enables the positioning method of secondary docking of the ship to be changed, so that the positioning workload is greatly reduced, and the positioning is more accurate. Compared with the original method, the new method has the following defects:
1. in order to ensure the positioning accuracy of the longitudinal direction of the ship, a longitudinal positioning point needs to be arranged on the outer plate of the ship, a laser instrument is used, the laser instrument and the positioning point are ensured to be on the same rib surface, but the laser instrument needs to manually observe whether a light spot is on the positioning point, and in the process, due to the observation angle, the observation distance, the difference among persons and other reasons, the positioning error is very large, and the positioning failure is often caused.
2. In order to ensure the correctness of the half-width positions of the bow and the stern of the ship, two wood rulers are required to be arranged on the parallel middle body part respectively, the distance from an outer plate to a dock wall is measured in the positioning process, the measured distance is ensured to be consistent with the theoretical distance, but the wood rulers are required to be perpendicular to the outer plate in the measuring process, which is difficult to achieve in practical operation, and meanwhile, the shape width of the ship does not comprise the thickness of the outer plate, the measured distance does not comprise the thickness of the outer plate, the thickness of the outer plate in a bow and stern measuring area can be inconsistent, so that the point is easy to ignore in positioning, and positioning failure can be caused.
Due to the reasons, the existing positioning process often has positioning failure, needs to drain water again and reposition, wastes time and labor, and increases dock period and cost.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the positioning method for secondary docking of the ship, which can be applied to dry docks and floating docks, realizes accurate positioning of secondary docking of the ship, reduces the use of manpower and material resources, shortens the dock period and saves the production cost.
In order to achieve the above object, the present invention provides the following technical solutions:
a method for positioning secondary docking of a ship comprises the following steps:
firstly, surveying and marking a positioning reference line on a dock wall along the length direction of a dock, wherein the position of the positioning reference line is consistent with the position of a dock position of a docked ship;
secondly, arranging a first positioning point of the front wall of the cabin on the positioning datum line;
thirdly, uniformly distributing docking blocks on two sides of the positioning datum line by taking the positioning datum line as a center line of the docking block arrangement;
fourthly, a second positioning point in the length direction is arranged on an outer plate of the front wall of the cabin, a third positioning point in the width direction is arranged at the stern part of the parallel middle body, and a fourth positioning point in the width direction is arranged at the bow part of the parallel middle body;
fifthly, setting a total station on each dock wall of the bow part and the stern part of the docking ship, wherein the total stations take the first positioning point as an original point and take the positioning datum line as a reference to perform linear measurement;
sixthly, measuring the coordinate of the second positioning point by using a total station positioned on a dock wall of the stern part of the ship, and when the X coordinate is X2When the length direction of the ship is in place at the moment when the length direction of the ship is not less than 0;
seventhly, measuring the coordinate of a third positioning point by a total station positioned on a dock wall of a stern part of the ship, and when the Y coordinate of the third positioning point is Y3When the formula is met, the width direction of the stern of the docking ship is in place,
Y3=L-B/2-S3
wherein L is the distance between the positioning datum line and the center line of the ship dock, B is the width of the ship, and S3The thickness of the outer plate at the third positioning point;
eighthly, measuring the coordinate of a fourth positioning point by a total station positioned on a ship bow dock wall, and when the Y coordinate of the fourth positioning point is Y4When the formula is met, the width direction of the stern of the docking ship is in place,
Y4=L-B/2-S4
wherein S is4The thickness of the outer plate at the fourth positioning point;
nine, X in the seven, eight and nine steps2、Y3、Y4When the data of (2) all satisfy the formula condition, the ship positioning is finished.
In the positioning method for secondary docking of a ship, the first positioning point is located at a position corresponding to a # rib position of the ship 34, and the second positioning point is located on an outer plate of a front wall of an engine room at the # rib position of the ship 34.
In the above positioning method for secondary docking of a ship, the length of the positioning reference line is not less than the ship length.
In the positioning method for secondary docking of a ship, the third positioning point and the fourth positioning point are both located at the joint of the deck and the outer plate.
In the above positioning method for secondary docking of a ship, the inclination angle of the total station is consistent with the trim angle of the ship.
Based on the technical scheme, compared with the prior art, the invention has the following advantages:
1. the method can ensure accurate arrangement of the docking block, ensures consistency of ship positioning and docking block arrangement, and is accurate and simple.
2. According to the method, the first positioning point, the second positioning point, the third positioning point, the fourth positioning point and the positioning datum line are arranged, and the total station is matched, so that the operation is simpler and more convenient during secondary docking of the ship, a large amount of manual labor is replaced, the human resources are saved, the production efficiency is improved, and the production cost is saved.
3. The method can realize the positioning accuracy, greatly improve the success rate of ship docking, shorten the docking period and further save the cost.
Drawings
Fig. 1 is a state diagram of the use of the present invention.
Detailed Description
The following detailed description will be made with reference to the accompanying drawings and specific embodiments to make the use and operation of the positioning method for secondary docking of a ship more clearly understood, but the scope of the present invention is not limited thereto.
As shown in fig. 1, a method for positioning a secondary docking of a ship includes the following steps:
firstly, surveying and marking a positioning reference line 2 on a dock wall along the length direction of a dock 1, wherein the position of the positioning reference line 2 is consistent with the position of a dock position of a docking ship, the length of the positioning reference line 2 is not less than the length of the ship, and the position of the positioning reference line 2 in the width direction cannot influence the use of a total station, namely the total station cannot be blocked by equipment on the positioning reference line 2, and the equipment comprises but is not limited to a crane and an electric box;
secondly, arranging a first positioning point 3 of the front wall of the engine room on the positioning datum line 2, wherein the position of the first positioning point 3 corresponds to the 34# rib position of the ship;
thirdly, uniformly distributing docking blocks 4 on two sides of the positioning datum line 2 by taking the positioning datum line 2 as a central line of the docking blocks 4;
fourthly, a second positioning point 5 in the length direction is arranged on an outer plate of the front wall of the cabin, the second positioning point 5 is positioned on the outer plate of the front wall of the cabin at the 34# rib position of the ship, a third positioning point 7 in the width direction is arranged at the stern part of the parallel middle body 6, a fourth positioning point 8 in the width direction is arranged at the bow part of the parallel middle body 6, and the third positioning point 7 and the fourth positioning point 8 are both positioned at the joint of the deck and the outer plate;
fifthly, arranging a total station 9 on each of dock walls of a bow part and a stern part of the docking ship, wherein the total stations 9 take the first positioning point 3 as an original point and take the positioning datum line 2 as a reference to perform linear measurement, and the inclination angle of the total station 9 is consistent with the longitudinal inclination angle of the ship;
sixthly, measuring the coordinate of the second positioning point 5 by a total station 9 positioned on a stern dock wall of the ship, and when the X coordinate is X2When the length direction of the ship is in place at the moment when the length direction of the ship is not less than 0;
seventhly, measuring by a total station 9 positioned on a dock wall at a stern of the shipCoordinates of the third positioning point 7, when the Y-coordinate Y of the third positioning point 73When the formula is met, the width direction of the stern of the docking ship is in place,
Y3=L-B/2-S3
wherein L is the distance between the positioning reference line 2 and the center line of the ship dock, B is the width of the ship, and S3The thickness of the outer plate at the third positioning point 7;
eighthly, measuring the coordinate of a fourth positioning point 8 by a total station 9 positioned on a ship bow dock wall, and when the Y coordinate of the fourth positioning point 8 is Y4When the formula is met, the width direction of the stern of the docking ship is in place,
Y4=L-B/2-S4
wherein S is4The thickness of the outer plate at the fourth positioning point 8;
nine, X in the seven, eight and nine steps2、Y3、Y4When the data of (2) all satisfy the formula condition, the ship positioning is finished.
It goes without saying that the positioning method for secondary docking of a ship according to the present invention includes other similar structural components and fixed connection means in addition to the types and means described in the above embodiments. In summary, the positioning method for secondary docking of a ship further comprises other changes and substitutions which are obvious to those skilled in the art.
Claims (5)
1. A method for positioning secondary docking of a ship is characterized by comprising the following steps:
firstly, surveying and marking a positioning reference line (2) on a dock wall along the length direction of a dock (1), wherein the position of the positioning reference line (2) is consistent with the position of a dock position of a docking ship;
secondly, arranging a first positioning point (3) of the front wall of the cabin on the positioning datum line (2);
thirdly, the positioning datum line (2) is used as a center line of the arrangement of the docking blocks (4), and the docking blocks (4) are uniformly distributed on two sides of the positioning datum line (2);
fourthly, a second positioning point (5) in the length direction is arranged on the outer plate of the front wall of the cabin, a third positioning point (7) in the width direction is arranged at the stern part of the parallel middle body (6), and a fourth positioning point (8) in the width direction is arranged at the bow part of the parallel middle body (6);
fifthly, arranging a total station (9) on each dock wall of the bow part and the stern part of the docking ship, wherein the total stations (9) take the first positioning point (3) as an original point and take the positioning datum line (2) as a reference to perform linear measurement;
sixthly, measuring the coordinate of the second positioning point (5) by a total station (9) positioned on a stern dock wall of the ship, and when the X coordinate is X2When the length direction of the ship is in place at the moment when the length direction of the ship is not less than 0;
seventhly, measuring the coordinate of a third positioning point (7) by a total station (9) positioned on a dock wall of a stern part of the ship, and when the Y coordinate of the third positioning point (7) is Y3When the formula is met, the width direction of the stern of the docking ship is in place,
Y3=L-B/2-S3
wherein L is the distance between the positioning reference line (2) and the center line of the ship dock, B is the width of the ship, and S is3The thickness of the outer plate at the third positioning point (7);
eighthly, measuring the coordinate of a fourth positioning point (8) by a total station (9) positioned on a ship bow dock wall, and when the Y coordinate of the fourth positioning point (8) is Y4When the formula is met, the width direction of the stern of the docking ship is in place,
Y4=L-B/2-S4
wherein S is4The thickness of the outer plate at the fourth positioning point (8);
nine, X in the seven, eight and nine steps2、Y3、Y4When the data of (2) all satisfy the formula condition, the ship positioning is finished.
2. The method for positioning secondary docking of a ship according to claim 1, wherein the first positioning point (3) is located at a position corresponding to a # 34 rib position of the ship, and the second positioning point (5) is located at an outer plate of a front wall of a cabin at the # 34 rib position of the ship.
3. A method for positioning a secondary docking of a vessel according to claim 1, characterised in that the length of the positioning reference line (2) is not less than the length of the vessel.
4. The method for positioning the secondary docking of the ship according to claim 1, wherein the third positioning point (7) and the fourth positioning point (8) are both located at the intersection of the deck and the outer plate.
5. A method according to claim 1, wherein the inclination angle of said total station (9) is in line with the trim angle of the vessel.
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| CN109080766B (en) * | 2018-08-27 | 2020-04-03 | 上海交通大学 | Method for determining ship deck coordinates |
| CN109579803A (en) * | 2018-10-29 | 2019-04-05 | 广州黄船海洋工程有限公司 | A kind of Ship docking positioning and monitoring method |
| CN109556581B (en) * | 2018-10-29 | 2021-06-11 | 广州黄船海洋工程有限公司 | Measuring method based on total station on floating platform |
| CN109795615B (en) * | 2019-01-30 | 2021-02-09 | 广船国际有限公司 | Installation method of rudder propeller device of secondary docking ship |
| CN110132231B (en) * | 2019-05-31 | 2021-07-02 | 上海江南长兴造船有限责任公司 | Method for monitoring U-shaped width of chemical tanker by using total station |
| CN111776163B (en) * | 2020-05-15 | 2021-07-20 | 上海江南长兴造船有限责任公司 | Positioning method for half ship and block water gap butt joint |
| CN112325815B (en) * | 2020-09-08 | 2022-11-01 | 舟山中远海运重工有限公司 | Three-dimensional detection method for lengthened and refitted container ship |
| CN114670986B (en) * | 2022-04-01 | 2023-06-20 | 江南造船(集团)有限责任公司 | Floating butt joint method for ship total sections |
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| CN101357680B (en) * | 2008-06-27 | 2012-07-04 | 沪东中华造船(集团)有限公司 | Vessel floating in dock and secondary falling positioning accurate control method |
| JP2010030340A (en) * | 2008-07-25 | 2010-02-12 | Arc Geo Support Co Ltd | Observation ship for measuring sound and sound measuring system |
| CN102381455B (en) * | 2011-09-01 | 2013-07-10 | 广州中船黄埔造船有限公司 | Unilateral positioning method for secondary docking of ship in dock |
| CN102530200B (en) * | 2012-03-26 | 2014-04-16 | 大连理工大学 | Hydraulic location device for guiding ship in floating dock and working method thereof |
| KR101408349B1 (en) * | 2012-10-19 | 2014-06-17 | 대우조선해양 주식회사 | Ship resetting method and coordinate measuring system for resetting ship |
| CN104724265B (en) * | 2013-12-20 | 2017-06-27 | 广州中船黄埔造船有限公司 | A kind of two-wire is side by side to drawing shifting ship's method |
| CN105667710A (en) * | 2015-12-31 | 2016-06-15 | 广船国际有限公司 | Translation locating device and method for annular block of hull |
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