CN114655384A - Method for mounting telescopic azimuth thruster of ship - Google Patents
Method for mounting telescopic azimuth thruster of ship Download PDFInfo
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- CN114655384A CN114655384A CN202210234756.7A CN202210234756A CN114655384A CN 114655384 A CN114655384 A CN 114655384A CN 202210234756 A CN202210234756 A CN 202210234756A CN 114655384 A CN114655384 A CN 114655384A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
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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
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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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
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
- B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
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- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an installation method of a ship telescopic azimuth thruster, which comprises the following steps: manufacturing an azimuth pushing base, wherein the azimuth pushing base is of an annular structure and comprises a panel, a web plate and a barrel; secondly, before the azimuth pushing base is mounted on a ship, the stay wire before welding is positioned; thirdly, welding and fixing a web plate of the azimuth pushing base and the cylinder; fourthly, after the welding of the azimuth pushing base is completed, carrying out machining leveling on the panel of the azimuth pushing base, and machining a sealing groove; fifthly, installing the azimuth thruster on an azimuth thruster base; sixthly, before the lower ends of the two lifting oil cylinders which are subjected to azimuth pushing and a bracket plate are permanently connected with the ship body, the correct positions of the lower ends of the azimuth pushing oil cylinders are correctly positioned, and vertical centering is performed; seventhly, lifting of the power unit is achieved through a hydraulic cylinder and a lifting pump which are pushed by the direction, and vertical centering of the lifting oil cylinder is carried out through the lifting process; and step eight, after the vertical centering of the lifting oil cylinder is completed, welding the permanent connection between the lifting oil cylinder and the guide rod and the ship body, and completing the installation of the azimuth thruster. By adopting the method to carry out the installation of the azimuth thruster, the installation precision is higher, the installation efficiency is faster, and the design requirements can be well met.
Description
Technical Field
The invention particularly relates to an installation method of a ship telescopic azimuth thruster.
Background
In recent years, there is an increasing tendency to use an azimuth thruster as a marine propulsion device. Since the azimuth thruster is configured such that a propeller is provided in a pod that rotates 360 degrees in the horizontal direction, unlike propulsion by a fixed shaft propeller and a rudder, the ship can be moved in any direction and the current position can be accurately maintained.
There is therefore a need for a faster and more convenient installation of an azimuth thruster.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for mounting a telescopic azimuth thruster of a ship.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for installing a ship telescopic azimuth thruster comprises the following steps:
manufacturing an azimuth pushing base, wherein the azimuth pushing base is of an annular structure and comprises a panel, a web plate and a barrel;
secondly, before the azimuth push base is mounted on a ship, the stay wire is positioned before welding;
thirdly, welding and fixing a web plate of the azimuth pushing base and the cylinder;
fourthly, after the welding of the azimuth pushing base is completed, carrying out machining leveling on the panel of the azimuth pushing base, and machining a sealing groove;
fifthly, installing the azimuth thruster on an azimuth thruster base;
sixthly, before the lower ends of the two lifting oil cylinders which are subjected to azimuth pushing and a bracket plate are permanently connected with the ship body, the correct positions of the lower ends of the azimuth pushing oil cylinders are correctly positioned, and vertical centering is performed;
seventhly, lifting of the power unit is achieved through a hydraulic cylinder and a lifting pump which are pushed by the direction, and vertical centering of the lifting oil cylinder is carried out through the lifting process;
and step eight, after the vertical centering of the lifting oil cylinder is completed, welding the permanent connection between the lifting oil cylinder and the guide rod and the ship body, and completing the installation of the azimuth thruster.
In the first step of the method,
(1) the panel is integrally blanked;
(2) preparing a special bracket or a steel platform;
(3) before the web plate is installed, a buckle is required to be arranged on a special bracket or a steel platform to buckle the panel;
(4) the fillet weld of the web and the panel adopts a sectional symmetrical welding method, two welders are arranged during welding, symmetrical welding is carried out, the one-time welding length is 200-300mm, and meanwhile, the welding sequence is adjusted in real time according to the deformation condition of the cylinder;
(5) the fillet weld of the web and the panel is completely welded;
(6) and carrying out 100% ultrasonic detection after welding.
And a plurality of vertical angle templates are required to be arranged on the inner surface and the outer surface of the web plate between the welding web plate and the panel.
And step two, determining the center line of the azimuth pushing base and the center line of the main shaft of the azimuth pushing and lifting and rotating system component, pulling a natural perpendicular line towards the ship deck plane at the longitudinal section in the ship body, ensuring the natural perpendicular line to be perpendicular to the longitudinal center line of the ship body, and finding out the center position on the azimuth pushing base, wherein the natural perpendicular line of the center line position of the main shaft of the azimuth pushing and lifting and rotating system component is ensured to be positioned at the center of the azimuth pushing base when the azimuth pushing base is installed and positioned.
The fourth step comprises:
1) processing a flange plane;
2) processing the inner diameter;
3) processing a flange plane sealing groove;
4) and drilling holes on the plane of the flange.
And step six, welding a temporary jack or a screw on the end part of the lifting oil cylinder and the ship body, finely adjusting the lower end of the oil cylinder in four directions of front, back, left and right when the power unit is at three different positions of high, middle and low, and finally realizing the permanent connection of the lifting oil cylinder and the ship body through a connecting toggle plate at the optimal position.
In the seventh step, the process is carried out,
(1) preparation before centering is well carried out;
(2) preparing 4 steel pipes with different lengths;
(3) when the power unit is in a low position, 4 shortest steel pipes are uniformly placed on the sealing cover, a first screw is arranged at the top end of the first guide rod along the ship length square, a second screw is arranged at the top end of the second guide rod along the ship width square, a third screw is arranged at the lower end of the lifting oil cylinder along the ship width square, and a fourth screw is arranged at the lower end of the lifting oil cylinder along the ship length direction;
(4) fine adjustment is carried out on the guide rod and the lifting oil cylinder through four screw rods to carry out initial positioning;
(5) 2 dial indicators are respectively arranged on the sealing cover along the ship length direction and the ship width direction, and the numerical values of the dial indicators are recorded;
(6) starting a lifting oil cylinder, lifting the azimuth driving force to a second height, supporting the power unit by using 4 steel pipes with middle lengths, and recording numerical values of two dial indicators;
(7) lifting the azimuth pushing force unit to a high position again, supporting the power unit by using the longest steel pipe, and recording the numerical value of the dial indicator;
(8) and comparing the dial indicator values recorded for three times, wherein the difference value between the dial indicator values needs to be controlled within 1.5mm, otherwise, replacing the screw rod and detecting again according to the steps until the difference value is less than 1.5 mm.
The invention has the beneficial effects that: by adopting the method to carry out the installation of the azimuth thruster, the installation precision is higher, the installation efficiency is faster, and the design requirements can be well met.
Drawings
FIG. 1 is a schematic view of the location of the vessel and block in which the azimuth thruster is located.
FIG. 2 is a detailed view of the orientation push base assembly.
Fig. 3 is a schematic diagram of the adjustment of the verticality of the oil cylinder.
FIG. 4 is a schematic diagram of the verticality detection of the main guiding rod in the low position of the power unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The telescopic azimuth thruster has 1300kW power and variable frequency driving, and the fixed blades are arranged in the bow propulsion chamber. The Azimuth Thruster is Azimuth thrust ULE155 FP in the total weight of 17400kg, is produced by packaging and assembling Corkshire, and adopts a fixed-pitch full-rotation Thruster of Rooio and a variable frequency control system of ABB. The azimuth thruster comprises a lifting and rotating system component (namely a power unit), 2 lifting and descending movement hydraulic cylinders, 1 main guide rod and 2 auxiliary guide rods, a full-rotation FPP thruster and the like.
The azimuth push is located in the 80A total segment, the base installation of which should be installed after the 801, 802, 810 segment total assembly is completed, and the 2930 platform is ensured to be horizontal. As shown in fig. 1, the maximum position of the full-swing hull extension is 2700mm below the baseline of the hull. Because the direction is pushed to be installed and initially debugged at the total assembly stage, the full-rotation propeller needs to extend out of a ship body flowing space, and therefore the total section needs to be erected to be more than 3000mm away from the base surface of the total assembly platform.
The invention discloses an installation method of a ship telescopic azimuth thruster, which comprises the following steps:
manufacturing an azimuth pushing base, wherein the azimuth pushing base is of an annular structure and comprises a panel, a web plate and a barrel;
the azimuth push base is a ring-shaped structure with the diameter reaching phi 2940, which is shown in figure 2. Because the azimuth pushing cylinder is directly communicated with the sea, the cylinder with the height of 129mm and the thickness of 20mm needs to be completely welded and connected with the panel with the thickness of 35mm, the welding workload is large, and the flatness requirement of the upper surface of the base is high and is 1.5mm, so that effective technological measures need to be made in the aspect of welding deformation control.
In the first step of the method,
(1) the panel is integrally blanked, namely, the annular panel with the thickness of 35mm must be blanked integrally, so that the interference between a seam and 48 uniformly distributed bolt holes is avoided, and the integral flatness control is facilitated;
(2) preparing a special bracket or a steel platform to ensure the flatness of a foundation;
(3) before the web plate is installed, a buckle is required to be arranged on a special bracket or a steel platform to buckle the panel, so that the panel cannot be upwarped when the panel and the web plate are welded;
in order to ensure the perpendicularity of the web plate and the panel, a plurality of vertical angle templates are uniformly distributed on the inner surface and the outer surface of the web plate, so that the web plate cannot incline inwards or outwards when stress is generated by welding.
In order to ensure the roundness of the panel and the cylindrical web plate, crossed temporary angle steel is arranged at the lower position of the panel for reinforcement.
(4) The fillet weld of the web and the panel adopts a sectional symmetrical welding method, two welders are arranged during welding, symmetrical welding is carried out, the one-time welding length is 200-300mm, and meanwhile, the welding sequence is adjusted in real time according to the deformation condition of the cylinder;
(5) the fillet welds of the web and the panel are all welded through, the welding quality is noticed, and particularly, the welding slag between multiple layers and multiple welding needs to be cleaned up. The single-side welding and double-side forming can be adopted, so that the phenomenon that the linear energy input is increased by adopting a reverse carbon planer and the stress and deformation risk are increased is avoided;
(6) and after welding, 100% ultrasonic detection is carried out to ensure that welding defects such as slag inclusion, cracks and the like do not exist. And the welding defects should be treated in time.
Secondly, before the azimuth pushing base is mounted on a ship, the stay wire before welding is positioned;
and after the azimuth push base is manufactured and passes the inspection, the azimuth push base is hung into the 80A block for installation. At this time, the cylinder body of the lower opening of the azimuth thruster base is already installed as a part of the section of the ship body 801 in the section manufacturing stage. The base mounting work at this moment is mainly to butt joint a 129mm high 20mm thick web plate at the lower opening of the base with a barrel body pre-installed on the segment.
Before the base is installed, in order to ensure the installation accuracy, the wire must be pulled to position, and the center line of the orientation push base is determined to be FR184-30. The central line of the main shaft of the azimuth pushing lifting and rotating system component is FR183+400. Longitudinal section in hull FR183+400A natural perpendicular line is pulled towards the plane of the ship berth and is ensured to be perpendicular to the longitudinal center line of the ship body. And meanwhile, the center position is found out before the azimuth push base is lifted. Ensuring FR183 in mounting and positioning of base+400The natural perpendicular of position is located the center of base, and the precision tolerance range is 1 mm.
Thirdly, welding and fixing a web plate of the azimuth pushing base and the cylinder;
when welding, the twin welding machine adopts the sectional welding and the symmetrical welding, which can reduce the deformation after welding, and the butt joint of the base web plate and the hull cylinder also adopts the sectional symmetrical welding method. The butt welding is on-site transverse welding, a welding groove needs to be prepared in advance, and the angle and the root left according to the drawing requirements are ensured. The transverse welding is on-site welding, the welding position is low, the labor intensity is high, the manpower and the construction period need to be reasonably arranged, and the welding quality is ensured. After welding, 100% photographic examination should be performed.
Fourthly, after the welding of the azimuth pushing base is completed, carrying out machining leveling on the panel of the azimuth pushing base, and machining a sealing groove;
the precision and size requirements of a sealing surface and a sealing groove are required to be ensured by the upper surface of the key flange plate machined, and the specific detail requirements are as follows.
The flange plane is processed, the inner diameter is 2740 in the middle, the outer diameter is 2940 in the middle, and the flatness is 1.5mm after processing.
Inner diameter processing, the hole processing is to 2740mm in the same side, processing length 120 mm.
And (3) processing a sealing groove of a flange plane, wherein the groove width is 25mm, the groove depth is 11 +/-0.3 mm, the groove bottom finish degree is Ra6.3, and the finish degrees on two sides are Ra12.5.
The flange plane is drilled, the aperture is 27mm in the middle, the quantity is 48, the PCD2880mm is uniformly distributed, and the concentricity is 1.5 mm.
In order to ensure the requirement of machining precision, special flange boring machine machining equipment capable of machining the flange with the outer diameter reaching 3 meters must be selected, and meanwhile, auxiliary precision measuring tools are complete. The equipment list prepared for this machining is as follows.
And (3) machining equipment: MT4500 portable flange processing machine.
The measuring equipment comprises: dial indicator, vernier caliper, internal diameter ruler and laser planometer.
The perfect processing technology is the premise of ensuring the processing precision and the cost control requirement, and particularly, the preparation of processing conditions such as tool and the like and the execution of the whole processing process strictly according to the technological process. The key point of the processing technology is as follows.
1) Preparation before processing:
a scaffold should be erected in a construction area to provide a lighting power supply, a 380V power supply, compressed air, etc.
Before machining, machining reference should be made on the flange surface, and 4 sample punching points are knocked on the surface.
2) Overview of machining accuracy
As mentioned above, the flatness and surface finish of the machining targets, the rigidity of the equipment and the skill level of the operator on the tool and cutting line speed determine the high-precision machining of the equipment.
3) Equipment installation and adjustment
The mounting chassis is fixed on the inner hole of the flange through bolts, and each supporting leg is roughly adjusted, so that the mounting chassis is roughly positioned in the middle of the inner hole of the flange and is roughly kept horizontal to the plane of the flange.
And mounting the rotating beam and the counterweight part of the movable flange machine on the base.
The levelness of the flange machine is adjusted by utilizing the adjustable supporting feet.
After the leveling is finished, the dial indicator (or lever indicator) is used for adjusting the movable flange to be milled in the center of the flange, and the concentricity of the flange and a benchmark provided by a shipyard is ensured.
After the horizontal and centered adjustment is finished, a milling head power device is installed, and the parallelism between the milling head and the processed plane is adjusted;
and after the installation and leveling are finished, connecting a power device, and idling the equipment.
And after the idle rotation is finished, detecting whether the plane and center adjustment quantity meets the requirements again, and if the plane and center adjustment quantity does not meet the requirements, repeatedly adjusting until the requirements are met.
Starting the equipment, roughly processing the flange surface, and integrally processing the plane.
And the surface scribing of the flange surface comprises a drilling center line and a sealing groove center line.
And drilling holes on the surface of the flange face according to the center of the scribing line.
And (5) installing an end mill, and processing the sealing groove according to the scribing reference, wherein the depth of the sealing groove is processed to 11.5 mm.
And (4) finely machining the flange surface to ensure that the depth of the sealing groove is machined to meet the requirements of a drawing.
Adjusting the large arm of the equipment, and processing the inner hole of the flange to meet the drawing requirements.
And after the processing is finished, disassembling the equipment and performing final inspection. The method comprises the steps of measuring the diameter of an inner hole of a flange, the width and the depth of a sealing groove and detecting the flatness of a flange surface by laser.
4) Size control
Laser planometer/dial gauge: and checking the flatness.
A vernier caliper: the thickness of the plate and the depth and width of the sealing groove are checked.
Inner diameter ruler: and measuring the diameter of the inner hole of the flange.
After the flange face boring and the sealing groove machining are finished, the positions of 48 uniformly distributed bolt holes are determined on the base panel according to the drawing requirements, and the field stranding is finished.
The installation of the azimuth thruster mainly comprises the steps of initial installation, connection of the lower end of the lifting oil cylinder and a hull structure, and centering of the lifting oil cylinder, wherein the key point is centering of the lifting oil cylinder, so that smooth up-and-down movement of the azimuth thruster movement lifting and rotating system components in the normal pressure range of the system in the subsequent debugging stage is ensured.
Fifthly, installing the azimuth thruster on an azimuth thruster base;
the flatness of the base seal surface (flatness 1.5mm) is checked and the flatness measurement report is approved by the Cornst service engineer of the Azimuth vendor.
The O-ring seal is installed in the azimuth push base groove and a sealing compound, such as Permatex, is applied to the flange machined surface for surface protection.
Fasten the well lid on the base panel, use torque wrench to fasten the bolt to the dynamics that the producer required.
2 conical positioning pins are mounted on the flange. The diameter is 12 mm. (Connsymbol provides tapered locating pins, shipyard drilling).
Sixthly, before the lower ends of the two lifting oil cylinders which are subjected to azimuth pushing and a bracket plate are permanently connected with the ship body, the correct positions of the lower ends of the azimuth pushing oil cylinders are correctly positioned, and vertical centering is performed; the temporary jack or the screw rod is welded at the end part of the oil cylinder and the ship body, so that when the power unit is positioned at three different positions, namely high, middle and low, the lower end of the oil cylinder can be finely adjusted forwards, backwards, leftwards and rightwards, and the oil cylinder and the ship body are permanently connected through the connecting toggle plate at the optimal position. The arrangement of the adjustable screw can be seen in fig. 3. The permanent connection positioning method between the upper ends of the 2 auxiliary guide rods and the ship body and the positioning method of the lower end of the oil cylinder.
Seventhly, lifting of the power unit is achieved through a hydraulic cylinder and a lifting pump which are pushed by the direction, and vertical centering of the lifting oil cylinder is carried out through the lifting process;
all lowering and raising actions must be controlled locally during the installation phase, but the actuators contained in the azimuth thruster equipment package must be connected to all safety devices. The key step of the lift cylinder centering is as follows.
And preparing before centering. The method comprises the step of checking whether the azimuth pushing equipment is full of oil or not, and the centering of the lifting oil cylinder can not be carried out when system oil is not in place. The cleanness of the two guide rods is checked, the adhesion of iron scraps and the like is avoided, and lubricating oil is coated after the two guide rods are cleaned. And checking the voltage of the motor of the alternating current hydraulic pump, and connecting the voltage with a power supply through a switch. The pump motor is started, the motor is run for 1-2 seconds, and it is checked whether the direction of rotation coincides with that indicated by the arrow. And (4) removing a pressure gauge at the end of the oil cylinder, and discharging air in the lifting oil cylinder when the oil cylinder operates for the first time in a short time.
4 steel pipes of 3 different lengths A (400mm), B (1450mm) and C (2500 mm) were prepared in advance and were strong enough to support the weight of about 13 tons in the upper part of the entire unit.
When the power unit is in a low position, 4A steel pipes are uniformly placed on the sealing cover to support the power unit. A first screw rod is arranged at the top end of the guide rod 1 along the ship length direction, a second screw rod is arranged at the top end of the guide rod 2 along the ship width direction, a third screw rod is arranged at the lower end of the lifting oil cylinder along the ship width direction, and a fourth screw rod is arranged at the lower end of the lifting oil cylinder along the ship length direction.
The guide rod and the oil cylinder are initially positioned through fine adjustment of the four screw rods, and the positioning can be assisted through modes such as a drop hammer and the like.
2 dial indicators are respectively arranged on the sealing cover along the ship length direction and the ship width direction so as to detect the verticality of the main guide rod and record the numerical value of the dial indicator. Note that the dial indicator is set to a null point so that the indicator pointer has sufficient room to move in both the positive and negative directions. The above steps can be referred to fig. 4.
And starting the oil cylinder, lifting the azimuth driving force unit to 1450mm high, supporting the power unit by using 4 steel pipes B with the length of 1450mm, and recording the numerical values of the two dial indicators.
And after the azimuth driving force unit is lifted to the height of 2500mm again, the power unit is supported by the C steel pipe, and the numerical value of the dial indicator is recorded.
And (4) comparing the dial indicator values recorded in the three times, wherein the difference value between the dial indicator values must be controlled within 1.5mm, otherwise, finely adjusting the four screw rods, and detecting once again according to the steps until the difference value is controlled within 1.5 mm.
And step eight, after the vertical centering of the lifting oil cylinder is completed, welding the permanent connection between the lifting oil cylinder and the guide rod and the ship body, completing the installation of the azimuth thruster, and after the ship is launched, starting the debugging and the utility test of the azimuth thruster, wherein the debugging and the utility test comprise a full-rotation test and a low-speed sailing test which takes the azimuth thruster as advancing power so as to verify the propulsion power Redundancy (RP) ship-level symbol. The RP navigation test entrusts a third-party company to carry out detection, and the navigation speed reaches 7.46 knots and completely meets the design requirement through the joint participation and witness of shipyards, classification societies and shipowners.
The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.
Claims (7)
1. A method for installing a ship telescopic azimuth thruster is characterized in that: which comprises the following steps:
manufacturing an azimuth pushing base, wherein the azimuth pushing base is of an annular structure and comprises a panel, a web plate and a barrel;
secondly, before the azimuth push base is mounted on a ship, the stay wire is positioned before welding;
thirdly, welding and fixing the web plate of the azimuth pushing base and the cylinder;
fourthly, after the welding of the azimuth pushing base is completed, carrying out machining leveling on the panel of the azimuth pushing base, and machining a sealing groove;
fifthly, installing the azimuth thruster on an azimuth thruster base;
sixthly, before the lower ends of the two lifting oil cylinders which are subjected to azimuth pushing and a bracket plate are permanently connected with the ship body, the correct positions of the lower ends of the azimuth pushing oil cylinders are correctly positioned, and vertical centering is performed;
seventhly, lifting of the power unit is achieved through a hydraulic cylinder and a lifting pump which are pushed by the direction, and vertical centering of the lifting oil cylinder is carried out through the lifting process;
and step eight, after the vertical centering of the lifting oil cylinder is completed, welding the permanent connection between the lifting oil cylinder and the guide rod and the ship body, and completing the installation of the azimuth thruster.
2. The method of mounting a marine telescopic azimuth thruster of claim 1, wherein: in the first step of the method,
(1) the panel is integrally blanked;
(2) preparing a special bracket or a steel platform;
(3) before the web plate is installed, a buckle is required to be arranged on a special bracket or a steel platform to buckle the panel;
(4) the fillet weld of the web and the panel adopts a sectional symmetrical welding method, two welders are arranged during welding, symmetrical welding is carried out, the one-time welding length is 200-300mm, and meanwhile, the welding sequence is adjusted in real time according to the deformation condition of the cylinder;
(5) fillet welds of the web and the panel are full penetration welds;
(6) and carrying out 100% ultrasonic detection after welding.
3. The method of mounting a ship telescopic azimuth thruster according to claim 2, wherein: and a plurality of vertical angle templates are required to be arranged on the inner surface and the outer surface of the web plate between the welding web plate and the panel.
4. The method of mounting a marine telescopic azimuth thruster of claim 1, wherein: and step two, determining a central line of the azimuth pushing base and a central line of the main shaft of the azimuth pushing and lifting and rotating system component, pulling a natural vertical line towards the plane of the slipway at the longitudinal section in the ship body, ensuring the natural vertical line to be vertical to the longitudinal central line of the ship body, and finding out the central position on the azimuth pushing base, wherein the natural vertical line at the central line position of the main shaft of the azimuth pushing and lifting and rotating system component is ensured to be positioned at the center of the azimuth pushing base when the azimuth pushing base is installed and positioned.
5. The method of mounting a marine telescopic azimuth thruster of claim 1, wherein: the fourth step comprises:
1) processing a flange plane;
2) processing the inner diameter;
3) processing a flange plane sealing groove;
4) and drilling holes on the plane of the flange.
6. The method of mounting a marine telescopic azimuth thruster of claim 1, wherein: and step six, welding a temporary jack or a screw on the end part of the lifting oil cylinder and the ship body, finely adjusting the lower end of the oil cylinder in four directions of front, back, left and right when the power unit is at three different positions of high, middle and low, and finally realizing the permanent connection of the lifting oil cylinder and the ship body through a connecting toggle plate at the optimal position.
7. The method of mounting a marine telescopic azimuth thruster of claim 1, wherein: in the seventh step, the method further comprises the steps of,
(1) preparation before centering is well carried out;
(2) preparing 4 steel pipes with different lengths;
(3) when the power unit is at a low position, 4 shortest steel pipes are uniformly placed on the sealing cover, a first screw is arranged at the top end of the first guide rod along the ship length square, a second screw is arranged at the top end of the second guide rod along the ship width square, a third screw is arranged at the lower end of the lifting oil cylinder along the ship width square, and a fourth screw is arranged at the lower end of the lifting oil cylinder along the ship length direction;
(4) fine adjustment is carried out on the guide rod and the lifting oil cylinder through four screw rods for primary positioning;
(5) 2 dial indicators are respectively arranged on the sealing cover along the ship length direction and the ship width direction, and the numerical values of the dial indicators are recorded;
(6) starting a lifting oil cylinder, lifting the azimuth driving force to a second height, supporting the power unit by using 4 steel pipes with middle lengths, and recording numerical values of two dial indicators;
(7) lifting the azimuth pushing force unit to a high position again, supporting the power unit by using the longest steel pipe, and recording the numerical value of the dial indicator;
(8) and comparing the dial indicator values recorded for three times, wherein the difference value between the dial indicator values needs to be controlled within 1.5mm, otherwise, replacing the screw rod and detecting again according to the steps until the difference value is less than 1.5 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210234756.7A CN114655384B (en) | 2022-03-11 | 2022-03-11 | Installation method of ship telescopic azimuth thruster |
| BE20235177A BE1030459B1 (en) | 2022-03-11 | 2023-03-09 | Procedure for installing a telescopic azimuth thruster on a ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158593A (en) * | 2022-08-11 | 2022-10-11 | 上海外高桥造船有限公司 | Method for mounting ship propulsion device |
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| CN112722196A (en) * | 2020-12-31 | 2021-04-30 | 启东中远海运海洋工程有限公司 | Method for mounting propeller base of deep water dynamic positioning crude oil conveying device |
| CN112658518B (en) * | 2020-12-31 | 2023-01-06 | 南通中远海运船务工程有限公司 | Construction method of main propeller base of deep water dynamic positioning crude oil conveying device |
| CN113879481B (en) * | 2021-10-28 | 2023-07-25 | 中船黄埔文冲船舶有限公司 | Method for mounting lower sealing plate of full-rotation propeller base |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115158593A (en) * | 2022-08-11 | 2022-10-11 | 上海外高桥造船有限公司 | Method for mounting ship propulsion device |
| CN115158593B (en) * | 2022-08-11 | 2023-09-01 | 上海外高桥造船有限公司 | Method for mounting ship propulsion device |
Also Published As
| Publication number | Publication date |
|---|---|
| BE1030459B1 (en) | 2024-05-08 |
| BE1030459A1 (en) | 2023-11-17 |
| CN114655384B (en) | 2023-04-18 |
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