CN109292040B - Multidirectional full-rotation rudder propeller main section installation method - Google Patents
Multidirectional full-rotation rudder propeller main section installation method Download PDFInfo
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- CN109292040B CN109292040B CN201811250105.7A CN201811250105A CN109292040B CN 109292040 B CN109292040 B CN 109292040B CN 201811250105 A CN201811250105 A CN 201811250105A CN 109292040 B CN109292040 B CN 109292040B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
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Abstract
The invention discloses a method for installing a multi-azimuth full-rotation rudder propeller main section, which relates to the technical field of ship manufacturing and solves the technical problems of improving the installation precision of the rudder propeller and shortening the construction period, and the method comprises the following steps: A. welding a stern main section of a ship and setting a pier position; B. determining a rudder propeller installation reference line and a base machining reference point; C. processing a rudder propeller base, and drilling and tapping; D. transferring a steering oar, turning over and hoisting; E. mounting a fastening bolt and fixing a rudder propeller; F. the rudder propeller air guide sleeve is installed, and the steps are carried out in the main section installation stage, so that the installation work of lubricating oil, hydraulic oil and cooling system pipelines of the ship can be carried out in advance, and the project delay risk is reduced. In addition, the method has the advantages of improving the ship pre-outfitting rate, reducing the height of the loading pier in the dock, improving the safety performance of the loading stage, along with simplicity, reliability, time and labor conservation, cost saving and the like.
Description
Technical Field
The invention relates to the technical field of marine engineering ship manufacturing, in particular to a method for installing a full-rotation rudder propeller at a main section in multiple directions by adjusting an installation process.
Background
At present, large ocean engineering ships and tugs generally adopt electric propulsion devices, most of the large ocean engineering ships and tugs are provided with 2 or more than 2 full-rotation rudder propeller devices, a rudder propeller is arranged on a base, and the installation plane of the base has higher precision requirements, particularly the flatness and the roughness of the installation plane, so as to ensure the accurate matching of the rudder propeller and the installation base. In the existing shipbuilding process, a main hull is machined after being manufactured, and a rudder propeller is hoisted after the precision requirement is met, so that the installation stage of the rudder propeller is lagged, and the manufacturing period of a ship is directly influenced on a closing path of launching of the ship; and the installation of the downward hoisting rudder propeller requires the construction of a ship pier position which is about one time higher than the normal ship section position, and the construction danger is increased when the ship pier position is higher. There is therefore a need for improvements to existing rudder propeller mounting processes.
Disclosure of Invention
The invention provides a method for installing a multidirectional full-rotation rudder propeller main section, which aims to solve the technical problems that the construction period of ship manufacturing is prolonged due to the hoisting of a rudder propeller and the pier position of a ship required for hoisting is high.
A method for installing a multi-azimuth full-rotation rudder propeller main section is provided, wherein the rudder propeller is installed at the construction stage of a ship main section, and the construction steps comprise:
A. welding a stern main section of a ship and setting a pier position;
B. determining a rudder propeller installation reference line and a base machining reference point;
C. processing a rudder propeller base, and drilling and tapping;
D. transferring a steering oar, turning over and hoisting;
E. mounting a fastening bolt and fixing a rudder propeller;
F. and installing a rudder propeller fairing.
Preferably, the height of the pier position in the step A is determined by calculation according to the size of the installation space of the steering oar.
Preferably, the processing requirements of the rudder propeller base in the step C are as follows: the flatness is less than 0.2mm, and the roughness is less than 3.2.
Further preferably, the process of machining the rudder paddle base comprises the following steps:
(1) machining the main pushing base, and measuring the flatness of the lower surface of the main pushing base;
(2) if the flatness exceeds 0.2mm, erecting a numerical control machine tool by taking the rotation center line of the main pushing base as the center, and machining the main pushing base; if the flatness does not exceed 0.2mm, the machining is finished;
(3) and after re-measurement is carried out, the flatness of the base is determined to be not more than 0.2mm, and the thickness of the base is determined to be not less than 90mm, so that drilling and tapping are completed.
Further preferably, the rudder propeller drilling and tapping process comprises the following steps:
(1) drilling by using a numerical control machine tool, drilling a through hole with the diameter phi of 39mm, facing each bolt drilling hole, and taking the diameter phi of 70mm and the depth of 5 mm;
(2) measuring the deviation of the drilled hole, and if the deviation of the drilled hole exceeds 1mm, stopping the machine for inspection;
(3) the base of the main pushing motor is used for tapping, and the tapping depth is 70 mm.
Preferably, the method for transporting, turning over and hoisting the rudder propeller in the step D comprises the following steps:
(1) the middle hook of the chain block is hooked on a main lifting lug of a main propulsion power device, the right hook of the crane is hooked on a guide cover supporting part, the main propulsion power device is slowly hung, the minimum point is 4500mm away from the ground, and the flat car is withdrawn;
(2) slowly putting down a right hook of the crane until the main propulsion power device is vertically parked, removing the right hook, hanging a left hook of the crane to the guide cover supporting part, and slowly lifting the left hook until the main propulsion power device is horizontally parked;
(3) pushing the flat car to be right below the main propulsion power device, slowly putting down the main propulsion power device, and conveying the main propulsion power device to be right below the main propulsion base through the flat car;
(4) connecting a hook of the large crane with two main lifting lugs of a main propulsion power device respectively, and connecting a guide cover supporting part of the main propulsion power device with a main lifting lug plate on the reverse side of the total assembly to complete the lifting of the main propulsion power device;
(5) and the main propulsion power device is hoisted and arranged on the main propulsion base.
It is further preferable that auxiliary lugs be provided on both sides of the lug in step D.
It is also preferable that the fastening bolts are symmetrically tightened in sequence when the fastening bolts are installed in step E, and the tightening torque of the bolts is 3000N · m.
It is also preferred that the mounting of the rudder propeller fairing in step F comprises welding and mounting of the deflector.
The beneficial effects of the invention include:
(1) the installation stage of the rudder propeller is adjusted to the construction stage of the ship block, so that the installation of the rudder propeller is ensured to be carried out in advance, the installation work of lubricating oil, hydraulic oil and cooling system pipelines of the ship can also be carried out in advance, the construction period can be effectively prevented from being prolonged, and the ship manufacturing period is shortened.
(2) The method can improve the ship pre-outfitting rate on the whole, particularly reduce the height of the carrying pier in the dock, and improve the safety performance of the carrying stage.
In addition, the method also has the advantages of simplicity, reliability, time and labor saving, material and cost saving and the like.
Drawings
FIG. 1 is a schematic flow chart of a method for mounting a multi-azimuth rudder propeller main section;
FIG. 2 is a schematic diagram of a turning-over and hoisting path of a rudder propeller;
FIG. 3 is a schematic view of a rudder propeller mounting structure;
in the figure: 1-a main push base; 2-a main propulsion power unit; and 3, a flow guide cover.
Detailed Description
Referring to fig. 1 to 3, a method for mounting a multi-azimuth rudder propeller main section according to the present invention is described as follows.
The mounting of the full-rotation rudder propeller is carried out in the ship block building stage, and the rudder propeller mounting stage is adjusted to the ship block building stage, so that the mounting of the rudder propeller is ensured to be carried out in advance, the mounting work of lubricating oil, hydraulic oil and cooling system pipelines of a ship can be carried out in advance, the construction period can be effectively prevented from being prolonged, and the ship manufacturing period is shortened. The construction steps comprise:
step A, welding a stern main section of a ship, and setting a pier position; and (4) finishing the welding fire attack operation of the stern section of the ship, and after the inspection is finished, calculating and determining the height of the pier position according to the size of the installation space of the steering oar.
And B, determining a rudder propeller installation reference line and a base machining reference point, drawing a reference line according to ship manufacturing regulations and rudder propeller installation requirements for machining and installation, and marking the size on the base according to a drawing.
C, machining a rudder propeller base, and drilling and tapping; the flatness is less than 0.2mm, and the roughness is less than 3.2.
Wherein, the process of rudder oar base processing includes:
(1) and (5) machining the main push base, and measuring the flatness of the lower surface of the main push base.
(2) If the flatness exceeds 0.2mm, erecting a numerical control machine tool by taking the rotation center line of the main pushing base as the center, and machining the main pushing base; and if the flatness does not exceed 0.2mm, finishing the machining.
(3) And after re-measurement is carried out, the flatness of the base is determined to be not more than 0.2mm, and the thickness of the base is determined to be not less than 90mm, so that drilling and tapping are completed.
Wherein, the process of rudder oar drilling and tapping includes:
(1) and (3) drilling by using a numerical control machine, drilling a through hole with the diameter phi of 39mm, facing each bolt drilling hole, and taking the diameter phi of 70mm and the depth of 5 mm.
(2) And measuring the deviation of the drilled hole, and stopping the machine for inspection if the deviation of the drilled hole exceeds 1 mm.
(3) The base of the main pushing motor is used for tapping, and the tapping depth is 70 mm.
And D, transferring the rudder propeller, and turning over and hoisting.
The method for transferring the rudder propeller and turning over the crane comprises the following steps:
(1) the middle hook of the chain block is hooked on the main lifting lug of the main propulsion power device, and auxiliary lifting lugs can be arranged on two sides of the lifting lug. The right side of the crane is hung on the air guide sleeve supporting part, the main propulsion power device is slowly hung, the minimum point is 4500mm away from the ground, and the flat car is withdrawn.
(2) Slowly putting down the right hook of the crane until the main propulsion power device is vertically parked, removing the right hook, hanging the left hook of the crane to the guide cover supporting part, and slowly lifting the left hook until the main propulsion power device is horizontally parked.
(3) And pushing the flat car to be under the main propulsion power device, slowly putting down the main propulsion power device, and conveying the main propulsion power device to be under the main propulsion base through the flat car.
(4) The hook of the large crane is respectively connected with the two main lifting lugs of the main propulsion power device, and auxiliary lifting lugs can be arranged on two sides of the lifting lugs. And connecting the air guide sleeve supporting part of the main propulsion power device with the main propulsion lifting eye plate on the reverse side of the total assembly to finish the lifting of the main propulsion power device.
(5) And the main propulsion power device is hoisted and arranged on the main propulsion base. In this process, it is necessary to stop the vibratory operation near the main thrust base, and measures are taken to prevent the main thrust power unit from touching the bottom surface when the main thrust power unit is upright.
E. Mounting a fastening bolt and fixing a rudder propeller; when the fastening bolts are installed, the bolts are symmetrically screwed in sequence, and the screwing torque of the bolts is 3000 N.m.
F. And installing the rudder propeller air guide sleeve, wherein the installing of the rudder propeller air guide sleeve comprises welding and installing of the air guide plate.
The method can improve the ship pre-outfitting rate on the whole, particularly reduce the height of the carrying pier in the dock, and improve the safety performance of the carrying stage. In addition, the method also has the advantages of simplicity, reliability, time and labor saving, material and cost saving and the like.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (6)
1. The method for installing the multi-azimuth full-rotation rudder propeller main section is characterized in that the rudder propeller is installed at the construction stage of a ship main section, wherein the construction steps comprise:
A. welding a stern main section of a ship and setting a pier position;
B. determining a rudder propeller installation reference line and a base machining reference point;
C. processing a rudder propeller base, and drilling and tapping;
D. transferring a steering oar, turning over and hoisting;
E. mounting a fastening bolt and fixing a rudder propeller;
F. installing a rudder propeller fairing;
the machining process of the rudder paddle base comprises the following steps:
(1) machining the main pushing base, and measuring the flatness of the lower surface of the main pushing base;
(2) if the flatness exceeds 0.2mm, erecting a numerical control machine tool by taking the rotation center line of the main pushing base as the center, and machining the main pushing base; if the flatness does not exceed 0.2mm, the machining is finished;
(3) after re-measurement is carried out, the flatness of the base is determined to be not more than 0.2mm, and the thickness of the base is determined to be not less than 90mm, and then drilling and tapping are completed;
the drilling and tapping process of the rudder propeller comprises the following steps:
(1) drilling by using a numerical control machine tool, drilling a through hole with the diameter phi of 39mm, facing each bolt drilling hole, and taking the diameter phi of 70mm and the depth of 5 mm;
(2) measuring the deviation of the drilled hole, and if the deviation of the drilled hole exceeds 1mm, stopping the machine for inspection;
(3) tapping is carried out on a base of the main push motor, and the tapping depth is 70 mm;
the method for transporting, turning over and hoisting the rudder propeller in the step D comprises the following steps:
(1) the middle hook of the chain block is hooked on a main lifting lug of a main propulsion power device, the right hook of the crane is hooked on a guide cover supporting part, the main propulsion power device is slowly hung, the minimum point is 4500mm away from the ground, and the flat car is withdrawn;
(2) slowly putting down a right hook of the crane until the main propulsion power device is vertically parked, removing the right hook, hanging a left hook of the crane to the guide cover supporting part, and slowly lifting the left hook until the main propulsion power device is horizontally parked;
(3) pushing the flat car to be right below the main propulsion power device, slowly putting down the main propulsion power device, and conveying the main propulsion power device to be right below the main propulsion base through the flat car;
(4) connecting a hook of the large crane with two main lifting lugs of a main propulsion power device respectively, and connecting a guide cover supporting part of the main propulsion power device with a main lifting lug plate on the reverse side of the total assembly to complete the lifting of the main propulsion power device;
(5) and the main propulsion power device is hoisted and arranged on the main propulsion base.
2. The method for installing the multi-azimuth rudder propeller trunk section according to claim 1, wherein the pier position height in the step A is determined by calculation according to the size of the installation space of the rudder propeller.
3. The method for installing the multi-azimuth rudder propeller trunk section according to claim 1, wherein the machining requirements of the rudder propeller base in the step C are as follows: the flatness is less than 0.2mm, and the roughness is less than 3.2.
4. The method for installing the multi-azimuth rudder propeller trunk section according to claim 1, wherein auxiliary lifting lugs are arranged on two sides of the lifting lug in the step D.
5. The method for installing the multi-azimuth rudder propeller trunk section according to claim 1, wherein the bolts are symmetrically tightened in sequence when the fastening bolts are installed in the step E, and the tightening torque of the bolts is 3000N-m.
6. The method for installing the multi-azimuth rudder propeller trunk section according to claim 1, wherein the step F of installing the rudder propeller fairings comprises welding and installing the guide plates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811250105.7A CN109292040B (en) | 2018-10-25 | 2018-10-25 | Multidirectional full-rotation rudder propeller main section installation method |
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| CN201811250105.7A CN109292040B (en) | 2018-10-25 | 2018-10-25 | Multidirectional full-rotation rudder propeller main section installation method |
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| CN109292040B true CN109292040B (en) | 2020-12-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111498049B (en) * | 2020-04-10 | 2021-12-21 | 中船澄西扬州船舶有限公司 | Mounting method of energy-saving stator |
| CN113320659B (en) * | 2021-06-25 | 2022-07-01 | 广船国际有限公司 | Method for assembling flange and barrel of double-angle steering oar of ship |
| CN114084311A (en) * | 2021-12-27 | 2022-02-25 | 江龙船艇科技股份有限公司 | High-precision installation method for full-slewing device |
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| CN102490003A (en) * | 2011-11-28 | 2012-06-13 | 广州中船黄埔造船有限公司 | Method for installing telescopic full-rotating rudder propeller device |
| CN102627139A (en) * | 2012-05-08 | 2012-08-08 | 上海江南长兴造船有限责任公司 | Final assembly method of ship shafting and rudder system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101346174B1 (en) * | 2012-02-28 | 2013-12-31 | 삼성중공업 주식회사 | Ship including destachable and flowable thruster |
| CN102951260B (en) * | 2012-11-02 | 2015-03-11 | 福建省马尾造船股份有限公司 | Method for installing steering oar on ship body sections |
| CN102923252B (en) * | 2012-11-14 | 2014-12-31 | 武汉南华高速船舶工程股份有限公司 | Full rotation steering oar device installation method |
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Patent Citations (4)
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|---|---|---|---|---|
| CN102490003A (en) * | 2011-11-28 | 2012-06-13 | 广州中船黄埔造船有限公司 | Method for installing telescopic full-rotating rudder propeller device |
| CN102627139A (en) * | 2012-05-08 | 2012-08-08 | 上海江南长兴造船有限责任公司 | Final assembly method of ship shafting and rudder system |
| CN102745308A (en) * | 2012-06-21 | 2012-10-24 | 上海江南长兴重工有限责任公司 | Method for carrying bulk freighter body stern part assembly |
| CN104890811A (en) * | 2015-07-01 | 2015-09-09 | 中船黄埔文冲船舶有限公司 | Installation method of ship bow telescopic paddle based on omega sealing principle |
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Effective date of registration: 20220130 Address after: 369 Lijiang East Road, Huangdao District, Qingdao City, Shandong Province Patentee after: China Shipbuilding Group Qingdao Beihai Shipbuilding Co.,Ltd. Address before: 266555 No. 365, Lijiang East Road, economic and Technological Development Zone, Huangdao District, Qingdao City, Shandong Province Patentee before: QINGDAO WUCHANG SHIPBUILDING INDUSTRY CO.,LTD. |