CN102431626B - Installation method of overlong twin-skeg structure segment and shaft bracket dock - Google Patents

Installation method of overlong twin-skeg structure segment and shaft bracket dock Download PDF

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CN102431626B
CN102431626B CN2011103161228A CN201110316122A CN102431626B CN 102431626 B CN102431626 B CN 102431626B CN 2011103161228 A CN2011103161228 A CN 2011103161228A CN 201110316122 A CN201110316122 A CN 201110316122A CN 102431626 B CN102431626 B CN 102431626B
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segmentation
dock
shaft bracket
stern
installation
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CN2011103161228A
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CN102431626A (en
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周洪元
张翠平
张吉
曹云勇
牛俊
陶国君
秦龚
刘海东
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沪东中华造船(集团)有限公司
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Abstract

An installation method of an overlong twin-skeg structure segment and a shaft bracket dock comprises the following steps that: (1) twin skegs consist of two symmetrical skegs at two sides of a ship body, and each single skeg is combined by a tail fin structure and a V-shaped expended arm steel casting SFPS shaft bracket. The part of the tail fin structure with maximum curvature change is divided into three segments at the bottom of the ship body; (2) the segments are reversely assembled, and the segments are embedded and initially positioned in the dock; (3) the shaft bracket and the AB05PS segment are docked, welded, installed and positioned; (4) the SB3PS segment is positioned and installed; and (5) the installation of the overlong twin-skeg structure segment and the shaft bracket dock is completed. The installation method solves the installation problem of the twin-skeg segment and the shaft bracket and effectively controls the installation precision of the overlong twin skegs, so that the overall design quality of the ship is ensured.

Description

The structural segmented installation method with the pedestal dock of overlength twin skeg

Technical field

The present invention relates to shipbuilding, particularly the ship stern fin structure is in the installation of dock, specifically the structural segmented installation method with the pedestal dock of a kind of overlength twin skeg.

Technical background

The large special purposes boats and ships with overlength twin skeg line style that China builds first, this ship is provided with the axle system of two overlength symmetries, twin skeg zone vertically overlength reaches 1/3rd of full ship, and this is first on China's ship building history, have novelty, advance.

Twin skeg line style r Zweier is a kind of energy-conservation type ship, has excellent resistance propelling property and stronger capacity of anti-storm, has more safety and the stability of navigation.But the design and construction process of hull structure is but very complicated.The manufacturing of twin skeg segmentation reaches at dock and carries, and directly affects quality and the cycle of whole ship building.

It is essential how finding overlength twin skeg linear structure always to organize the dock locating mounting method, particularly finds a kind of locating mounting method, enables the precision control of guaranteeing that twin skeg segmentation and pedestal are located in the dock installation.Can shorten the dock production cycle, reduce production costs, construction technology can be complementary with the production of production department is actual.Can guarantee that the total group of stern fin structure and twin shafting bracing wire irradiation carry out smoothly, guarantee that overall build guality meets designing requirement, extremely difficult.

Summary of the invention

The key technical problem that the present invention will solve is to provide the structural segmented installation method with the pedestal dock of a kind of overlength twin skeg, the method can be guaranteed the precision control that twin skeg segmentation and pedestal are located in the dock installation, can shorten the dock production cycle, reduce production costs, construction technology can be complementary with the production of production department is actual.Can guarantee that the total group of stern fin structure and twin shafting bracing wire irradiation carry out smoothly, guarantee that overall build guality meets designing requirement.

Technical solution of the present invention is as follows:

The structural segmented installation method with the pedestal dock of a kind of overlength twin skeg, its characteristics are that the method comprises the steps:

1. described twin skeg consists of single stern fin of two symmetries in hull both sides, each single stern fin is combined by a tail fin structure and the arm-type steel casting shaft bracket of V font exhibition, described tail fin structure curvature line style is changed the best part be divided into 3 segmentations, be SB1PS segmentation, SB2PS segmentation and SB3PS segmentation, described SB1PS segmentation, SB2PS segmentation, SB3PS segmentation and SFPS shaft bracket are made respectively; Corresponding hull stern regional structure also is divided into AB03PS segmentation, AB04PS segmentation, AB05PS segmentation and AB06PS segmentation;

2. described SB1PS segmentation and the anti-state of AB03PS segmentation are always organized, and stand up into dock and locate; Described SB2PS segmentation and the anti-state of AB04PS segmentation are always organized, and stand up into dock and locate; The SFPS shaft bracket has adopted to be fixed in dock on the second pallet base according to theoretical irradiation size and has imbedded in advance, and this SFPS shaft bracket carries out Primary Location according to the dock theoretical axis of dock hull tap graticule; Described SB3PS segmentation is hanged down 100mm than theoretical dock location dimension as joining section normal state ground seat on the first carriage, enter the pre-buried just location of dock;

3. the upper deck when hull finishes with lower tail main body welding equipment, under just rectification of firer and weld seam film making Qualification, after stern door installs, described AB06PS segmentation is as measuring the baseline basis on location, axle system just possesses the irradiation condition, after irradiation is tried to achieve final axis, described shaft bracket is finely tuned according to the irradiation axis again, carry out lifting and left and right regulation and control with the cucurbit that arranges in oil pump top and segmentation and orchid screw, prevent from, described shaft bracket is docked welding equipment with described AB05PS segmentation location is installed, and maintenance is connected the line style fairing, refill the weldering bulk parts,

4. after described shaft bracket is installed the location end, the cucurbit that the SB3PS segmentation is pushed up by oil pump and segmentation arranges and the orchid screw that will be positioned on described the first carriage carry out lifting and left and right regulation and control, and embedding is mended between described SB2PS segmentation and described shaft bracket to position to install and pasted outside plate;

5. in described each segmentation of stern fin structure, stern tube, beam barrel body are arranged, the built-in fitting of front bearing, centre bearer is formally located, then bulk parts is installed, and completes the structural segmented installation with the pedestal dock of overlength twin skeg.

Described the second carriage is vertical latticed form grillage, operation hole while having the location and installation weldering, the floor level setting of this second carriage, this second carriage is placed on the stupefied pier of dock, place oil pump top or angle steel between the base plate of the second carriage and stupefied pier,, to regulate the height up and down of propeler bracket, leave the 100mm space between the cross rib position of described the second carriage and the line style of described propeler bracket, described propeler bracket and the second holder.

Described SB1PS segmentation manufacturing adopt outside plate be the basal plane line style just make moulding bed, note controlling well subsection deformation in the welding equipment stage, carry out structural strengthening, emphasis is carried out the interim reinforcement of the front bearing foundry goods in segmentation and is fixed, segmentation completion and moulding bed are measured before breaking away from, mark waterline, moulding bed line of centers, reference line for frame, while always organizing, according to the said reference line, carry out SB1PS and the anti-state of AB03PS is always organized; Being provided with two front axles in this segmentation is simplified formula steel casting, after the first irradiation of axis, determine installation site, according to formal irradiation axis centre line and the perforate welding again of steel casting external diameter, simplified formula steel casting carries out when segmentation is made that interim reinforcement is stood up together with segmentation, handling.

Described SB2PS segmentation manufacturing is adopted with outside plate lateral side wire type moulding bed pulling shaft line, paste inboard outside plate, the interim reinforcement fixed for centre bearer foundry goods in segmentation and stern tube, emphasis is carried out subsection deformation and is controlled, mark waterline, moulding bed line of centers, reference line for frame and AB04PS block assembly before segmentation completion and tread flaking, in different from SB1PS is, four stern tubes and two centre bearers are arranged, will note during installation:

I, centre bearer foundry goods are to 8 meters of the stern tube shaft suckers of the described SFPS shaft bracket of stern fin end;

Ii, the lifting of consideration complete cross section dock need, and wherein a central siphon is in bulk, and centre bearer is put into segmentation;

Iii, because of the centre bearer foundry goods after first irradiation, could welding equipment, so must strengthen temporary fixed.

Described SB3PS segmentation is made, employing is made take the outside plate side as basal plane line style moulding bed pulling shaft line side, paste inboard outside plate, its construction Difficulties is: as joining section, need to consider that the carriage jacking in the small space zone designs, need the design bulk parts, vacating space, first allow the SFPS shaft bracket locate at dock, must finish just SB3PS section jacking welding equipment in the described SFPS shaft bracket of stern fin end dock location; The SB3PS segmentation need to solve in the jacking process finely tunes line style between surplus mowing and front and back segmentation and is connected fairing, the SFPS shaft bracket of stern fin end and section construction narrow space, structure is intensive, need to install around central siphon, formulate concrete construction procedure, what described SB3PS segmentation and described SB1PS, SB2PS segmentation were different is the first carriage that sets in advance jacking, and its principle of work is to be provided with the truss-like carrier structure of framed plate structure in length and breadth at the segmentation center-of-gravity position to shelve described SB3PS segmentation; Its hanging method is that bottle gouard moved by hands is set above strong component, after described SB3PS segmental hoisting puts in place substantially, adopts turnbuckle formula oil pump top to press and adjusts.

Technique effect of the present invention is as follows:

The inventive method can guarantee that twin skeg segmentation and pedestal, in the precision control of dock installation location, can shorten the dock production cycle, reduces production costs, and construction technology can be complementary with the production of production department is actual.Can guarantee that the total group of stern fin structure and twin shafting bracing wire irradiation carry out smoothly, guarantee that overall build guality meets designing requirement.

Description of drawings

Fig. 1: stern fin line type figure

Fig. 2: figure is divided in the zone segmentation of stern fin

Fig. 3: stern fin transverse views

Fig. 4: stern fin center section view

Fig. 5: stern fin segmentation frock moulding bed figure

Fig. 6: shaft bracket generalized section

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing and embodiment, but should not limit the scope of the invention with this.

The present embodiment is a kind of large special boats and ships with overlength twin skeg line style, and the particularity that the main frame of these boats and ships splits is:

1) main frame is arranged on the left-right and front-back position, and left and right stern tube shaft line length and orientation angle are different, and two shaft lengths differ nearly 20 meters;

2) main shaft system all is packaged in hull stern fin line type inside configuration, respectively have in the stern fin structure of left and right stern tube, in be provided with front bearing, centre bearer, bearing base, stern end are two large-scale V-shape steel casting supports with diagonal brace, form referred to as shaft bracket SFPS again;

3) stern fin shape curvature line style overlength is nearly more than 50 meters, thus be called super long axis, tail fin line style narrow space, structure is gathered, and is different from conventional boats and ships fully.

This type ship stern fin line type dwindles gradually from being about more than 30 meter between 55#~86#, narrow space.(seeing Fig. 1 and Fig. 2).Keystone configuration adopts the T-shaped material of transverse framing system to add stringers, and the left and right stern tube shaft is the left-right asymmetry setting with respect to the hull baseline, and these characteristics have increased twin skeg segmentation manufacture difficulty.At first to consider that axle is the comformability of bracing wire irradiation location, consider the installation of beam barrel body, front bearing, centre bearer location and installation, base stand location is installed, and reserves the installing space of bulk structure spare and subsides outside plate.These are all not run into during the manufacturing of conventional boat segmental and axle system install.

For this reason, determine to be fit to the structural segmented division of overlength twin skeg, always group and stern complete cross section pedestal installation exercise flow process most important, only on definite stern fin structure segmentation division, total group and stern complete cross section pedestal installation exercise process base, could further determine follow-up construction technology detailed rules and regulations, comprise the making of frock moulding bed, the carriage application of joining section pedestal.The complete cross section of stern all must coordinate twin shafting bracing wire irradiation location core formulate and implement in dock lifting, location and installation.

Linear structure and axle to stern fin zone are researching and analysing of location and installation, find to exist a following difficult problem:

1) between the 39#~86# of this ship double tail fins zone, account for captain's 1/3rd.Between 39#~55#, line style relatively mild (seeing Fig. 2), can adopt general bottom section construction technique.And be about more than 30 meter between 55#~86#, the left and right tailing axle is the left-right asymmetry setting with respect to baseline, axle bag zone has recurvation gesture line style, ship hull plate is thicker, all more than 20mm, these characteristics have increased the difficulty that double tail fins divides piece housing to make, and have influence on the formulation of tail fin zone sectional construction and mount scheme.

2) the arm-type steel casting SFPS shaft bracket of the V font of this ship band diagonal brace exhibition is the extension of hull tail fin structure, and maximum oad length and width height is 4.5m*4.5m*5m, and substance is 70.1T (ton), two SFPS shaft brackets of twin shafting symmetry 140T that weighs.Hull structure is attached thereto part-structure Special complex steel casting, upwards embedding hull structure docks with floor and stringers respectively and (laterally with 5 grades of floors, docks, stringers at the bottom of vertical embedding 3 roads), dock the stern fin to bow with the SB3PS segmentation, the screw shaft pipe of a nearly rice diameter is installed in structure, and inside processing narrow space not only, install positioning difficulty large, and outer bilge block support is intensive, and working space is narrow and small equally.

3) the left and right side of a ship axle of this ship system is parallel to the center line face, but asymmetric, nearly 3 meters apart from ship center line face of shaft centre lines; Left axle is nearly 35 meters of overall length, and with baseline angle 0.26, right axle is nearly 50 meters of overall length, with the baseline angle be 0.20, there are 4 middle bearing pedestals in left axle system, there are 6 middle bearing pedestals in right axle system.These characteristics are all that installation accuracy control has been brought larger difficulty to tail fin shaft.For guaranteeing that axle is that the precision that inner pedestal is installed is controlled, must establishment detailed construction technique.Need consider on the whole complete cross section lifting and shaft bracket (the arm-type steel casting of V font exhibition) dock mount scheme for this reason, guarantee that namely overweight stern tube shaft is easy for installation, guarantee that again shaft bracket is connected the fairing of outside plate line style with the SB3PS segmentation excessive.

4) the axle system lighting is the final basis on location in stern tube shaft mooring depressed place, axle system lighting condition is that hull construction will be completed the following 82# transcerse bulkhead of upper deck and all finishes to the stern hull structure, stern door installs, and the firer just rectifys and adds in the qualified situation of weld seam film making, just possesses first irradiation condition.

We, for this overlength of solution twin skeg is structural segmented and the installation method of pedestal dock, have carried out a series of activities:

One, the segmentation of stern fin structure is divided and total group technology establishment:

1. described stern fin structure segmentation division is the curvature line style to be changed maximum tail fin structure be divided into the combination of 3 segmentations and a shaft bracket, see Fig. 2, be the shaft bracket SFPS of SB1PS, SB2PS, SB3PS segmentation and the arm-type steel casting of V font exhibition, corresponding hull bottom also is divided into AB03PS, AB04PS, AB05PS, AB06PS segmentation, wherein the anti-state of SB1PS and AB03PS is always organized, stand up into dock and locate, SB2PS segmentation and the anti-state of AB04PS segmentation are always organized, stand up into the dock location, SB3PS locates at the enterprising dock of carriage as joining section normal state ground seat; Shaft bracket SFPS is fixed on the second pallet base in advance, according to the dock theoretical axis of dock hull tap graticule, carries out Primary Location, implements location and installation after the axle system lighting finishes again;

2. described stern fin structure segmentation division and total group technique combine the structural segmented curvature line style variation characteristic of twin skeg and dock actual situations of construction, determined that SB1PS, SB2PS segmentation manufacturing anti-state together with the segmentation of bottom always organizes, purpose is to reduce the welding deformation of structure, is conducive to the lifting location of dock; Stern tube, beam barrel body are arranged in the segmentation of stern fin structure, and the built-in fitting of front bearing, centre bearer could formal location after need waiting the bracing wire irradiation to finish for this reason, and bulk parts is installed;

The SB3PS side is made monolateral subsides outside plate, and main consideration reduces height of lift, makes the operation of narrow space convenient, and adopted first the embedding mode of mending to imbed in advance with the first carriage in dock, than the low 100mm of theoretical dock location dimension, do not affect top complete cross section and carry, can implement three-dimensional operation;

3. shaft bracket SFPS adopts the second carriage, shaft bracket SFPS is placed on the pedestal of the second carriage in advance, just locate at dock, after the axle system lighting is tried to achieve final axis, shaft bracket SFPS finely tunes according to the irradiation axis again,, with the cucurbit that arranges in oil pump and segmentation and orchid screw jacking row lifting and left and right regulation and control, after completing above-mentioned work, refill the weldering bulk parts, paste outside plate;

Comprehensive above-mentioned stern fin segmentation is divided, complete cross section is always organized technology establishment, purpose is exactly in order to meet left and right biaxial bracing wire irradiation condition, SFPS and SB3PS segmentation dock location and the dock construction relation that above it, complete cross section carries, control the segmentation welding deformation, make stern fin segmentation installation accuracy control in scope of design, changed traditional deck and opened auxiliary hole, wear the mounting process of cable wire lifting stern fin end support;

Two, stern fin complete cross section installation exercise process formulation:

Determine that stern fin segmentation complete cross section work flow is most important, only after definite complete cross section work flow, could further formulate follow-up stern fin section construction technique detailed rules and regulations, implement the sectioned shaft bracket location and installation;

Stern fin segmentation complete cross section dock lifting location, installation procedure are:

The total group of SB1PS segmentation and the anti-state of AB03PS segmentation is stood up into dock and is located;

The total group of SB2PS segmentation and the anti-state of AB04PS segmentation is stood up into dock and is located;

The SB3PS segmentation is in the first enterprising dock of carriage location;

The SFPS shaft bracket is in the second enterprising dock of carriage location;

The AB06PS complete cross section is as measuring the baseline basis on location; Upper deck finishes with lower tail main body welding equipment, and the firer just corrects and the qualified stern door of weld seam film making installs in situation, just possesses the irradiation condition.The SFPS shaft bracket is finely tuned after location determines according to the irradiation axis, and the SB3PS segmentation of jacking welding equipment and bulk parts paste outside plate.

Three, stern fin pedestal and SB3PS segmentation dock carriage mounting process:

1. in the past large-scale shaft bracket is installed, and the requirement of by production technology, formulating is all at stern deck panel dock rigging out, after the bracing wire of distortion correction by flame location structure examination axle system lighting finishes, could formally implement the installation location of shaft bracket.concrete method is: will be placed in the shaft bracket steel casting handling of dock to ship stern deck panel lower position, then large-scale crane cable wire passes segmentation by interim deck (or platform) auxiliary hole that pre-sets shaft bracket lifting is put in place, after the axle system lighting is tried to achieve axis, again shaft bracket is positioned and welding equipment, whole large-scale handling appliance of location welding equipment stage must be in the handling state all the time, adopt traditional shaft bracket hanging method, unfavorable factor is: the twin skeg complex structure, longer time for positioning in the dock installation, particularly large-scale handling appliance must omnidistancely coordinate.The shaft bracket location and installation stage for want of the positioning anchor center of gravity be difficult to determine, the shaft bracket that is suspending in midair can be in unsettled swinging condition, is difficult to the one-time positioning success.Divide break deck and inner structure to need the many auxiliary holes of interim increase, need the work such as benefit is established auxiliary hole, the touch-up paint of detecting a flaw after the pedestal welding equipment is complete, leave many " scars " on deck.

2. the carriage new process is adopted in the lifting of stern fin pedestal and SB3PS segmentation dock, i.e. the carriage special according to the line style manufacturing of stern fin, and the carrier structure form is that base plate is level, the above is framed plate structure.In advance SFPS shaft bracket and SB3PS segmentation are placed on carriage, in face of the hull general assembly is not also built, be placed in advance in dock (SB3PS segmentation primary stage lower while shelving 100mm) according to theoretical dock location dimension, when the hull manufacturing meets the irradiation condition, the SFPS shaft bracket is finely tuned according to actual irradiation axis and construction situation, during formal location by establishing cucurbit in oil cylinder pushing tow and segmentation, the turnbuckle instrument carries out the regulation and control of lifting left and right, in oil cylinder pushing tow process, the SFPS shaft bracket will effectively be connected with main body, Synchronous lifting, prevent from; The SB3PS segmentation sets in advance in the dock desired location, and when axle is the bracing wire irradiation, the SFPS shaft bracket is installed location and finished, and SB3PS segmentation embedding can be mended between SB2PS and SFPS shaft bracket and is positioned installation.

The invention process multinomial technology innovation method implement segmentation and divide to make total group and install, concrete method is as follows:

1. SB1PS segmentation manufacturing adopt outside plate be the basal plane line style just make moulding bed (referring to Fig. 5), note controlling well subsection deformation in the welding equipment stage, carry out structural strengthening, emphasis is carried out the interim reinforcement of the front bearing foundry goods in segmentation and is fixed, segmentation completion and moulding bed are measured before breaking away from, mark waterline, moulding bed line of centers, reference line for frame, while always organizing, according to the said reference line, carry out SB1PS and the anti-state of AB03PS is always organized; Being provided with two front axles in this segmentation is simplified formula steel casting, after the first irradiation of axis, determine installation site, according to formal irradiation axis centre line and the perforate welding again of steel casting external diameter, simplified formula steel casting carries out when segmentation is made that interim reinforcement is stood up together with segmentation, handling.

2. SB2PS segmentation manufacturing is adopted with outside plate lateral side wire type moulding bed pulling shaft line, paste inboard outside plate, the interim reinforcement fixed for centre bearer foundry goods in segmentation and stern tube, emphasis is carried out subsection deformation and is controlled, mark waterline, moulding bed line of centers, reference line for frame and AB04PS block assembly before segmentation completion and tread flaking, in different from SB1PS is, four stern tubes and two centre bearers are arranged, consider from three aspects: during installation:

I, centre bearer foundry goods are to 8 meters, foot of this section of stern fin end foundry goods (SFPS) stern tube;

Ii, the lifting of consideration complete cross section dock need, and wherein a central siphon is in bulk, and centre bearer is put into segmentation;

Iii, because of the centre bearer foundry goods after first irradiation, could welding equipment, so must strengthen temporary fixed;

3. the SB3PS segmentation is made, employing is made take the outside plate side as basal plane line style moulding bed pulling shaft line side, paste inboard outside plate, its construction Difficulties is: as joining section, need to consider that the carriage jacking in the small space zone designs, need vacating space that bulk parts is installed, first allow the SFPS shaft bracket locate at dock, must strengthen finishing in stern fin end steel casting (SFPS) dock location jacking welding equipment SB3PS segmentation; Need to solve in the jacking process and finely tune line style between surplus mowing and front and back segmentation and be connected fairing, stern fin end foundry goods and section construction narrow space, structure is intensive, need to install around central siphon, formulate concrete construction procedure, wherein different from SB1PS, SB2PS is to set in advance the first jacking bracket, and its principle of work is to be provided with the truss-like carrier structure (pedestal) of framed plate structure (20mm thickness) in length and breadth at the segmentation center-of-gravity position to shelve segmentation.Its hanging method is that bottle gouard moved by hands is set above strong component, after segmental hoisting puts in place substantially, adopts turnbuckle formula oil pump top to press and adjusts.

Carry out the location of axle housing with the method for drawing wire, will note the concentricity of axle housing and axis during location, the correctness of shaft bracket position, the lateral dimension of armshaft; Simultaneously also to measure in advance SB3PS segmentation finish size, guarantee that axle is the accuracy of screw shaft pipe installation and the smooth connection of outside plate.

1) when the hull Construction State meets construction outline and propeler bracket mounting process conditional request, formal irradiation bracing wire, carry out lifting and left and right regulation and control by oil pump pushing tow and cucurbit, turnbuckle etc., final definite outside plate line style shaft bracket is installed, and whole shaft bracket location dimension is finely tuned the bulk parts of last welding equipment structural frame and shaft bracket connecting bridge.Embedded bracket shaft bracket novel process for installing application great advantage is:

A, the lift-launch of dock general section of shipbody, docking block, high mop are put (around shaft bracket) and carried out simultaneously with the shaft bracket dock is pre-buried, and be irrelevant mutually, three-dimensional construction;

B, can shift to an earlier date in time 70% and complete shaft bracket location work capacity, reduce labour intensity, shorten the lifting time.Greatly reduce the use of large lifting equipment 700T crane, (quite tight in the dock cycle, crane uses in very busy situation), can reduce 3/4 of crane period of service through implementing statistics.

2) deck no longer needs to establish newly many interim auxiliary holes (the former crane cable wire that allowed before this passes deck handling propeler bracket), reduces unnecessary temporary punching, mends not and the flaw detection work capacity, make technological design and the implementation phase all have an operability.

Four, the application of embedded bracket

1. embedded bracket: making is to design in advance in boat docking location the carriage (being equivalent to pedestal) of shelving the shaft bracket steel casting., with reference to the pedestal method for making of enterprise's " boats and ships foundations and reinforcement structure design rule ", through the sheet material load-carrying capacity, calculate thickness of slab at the available A grade steel plate in 16mm~20mm left and right.Be designed to network type form grillage, and increase the operation hole when alleviating manhole and welding as location and installation.Pedestal bottom plate is horizontally disposed with, and is placed on the stupefied pier of dock.Can place oil pump (or angle steel) between pedestal bottom plate and stupefied pier, play and regulate propeler bracket height up and down.Leave 100mm space (seeing Fig. 6) between cross rib position and shaft bracket line style.Pedestal and tray chamber adopt channel-section steel to fix, to keep pedestal and carrier structure strength and stability.

2. the location and installation of shaft bracket dock

, according to the hull tap graticule, first the second carriage is placed on the stupefied pier of dock (building berth).When the lift-launch of dock complete cross section needs the lifting shaft bracket, measure hull baseline and axis and carry out the irradiation bracing wire, then according to bracing wire and other theoretical sizes, carry out shaft bracket and locate.

Overlength double tail fins linear structure is built by pioneering construction technology, has effectively controlled curvature line style variation stern fin subsection deformation greatly, has guaranteed construction precision.The techniques such as wherein total group lifting, screw shaft pipe installation, the installation of carriage application SFPS tail fin end support dock, has novelty, guaranteed that fully the interior stern fin outside plate line style of dock and axle are setting accuracy, shorten shipbuilding period, realized the new breakthrough of overlength double tail fins linear structure pedestal construction technology.

We are by detailed analytical investigation, make a rational construction technology of cover and instruct the segmentation manufacturing of stern fin and dock location and installation, implement the installation accuracy control of Super Long-axles system, applied innovatively first multinomial new process, actv. has solved the construction difficult problem that overlength twin skeg line style housing is made, pedestal is installed, guarantee the setting accuracy of asymmetric overlength twin shafting, guaranteed the successful construction of this ship.

Practice shows, the inventive method can guarantee that the precision that twin skeg segmentation and pedestal are installed location at dock controls, and can shorten the dock production cycle, reduces production costs, and construction technology can be complementary with the production of production department is actual.Can guarantee that the total group of stern fin structure and twin shafting bracing wire irradiation carry out smoothly, guarantee that overall build guality meets designing requirement.

Claims (5)

1. the structural segmented installation method with the pedestal dock of an overlength twin skeg, is characterized in that the method comprises the steps:
1. described twin skeg consists of single stern fin of two symmetries in hull both sides, each single stern fin is combined by a stern fin structure and the arm-type steel casting SFPS shaft bracket of V font exhibition, described stern fin structure curvature line style is changed the best part be divided into 3 segmentations, be SB1PS segmentation, SB2PS segmentation and SB3PS segmentation, described SB1PS segmentation, SB2PS segmentation, SB3PS segmentation and SFPS shaft bracket are made respectively; Corresponding hull stern regional structure also is divided into AB03PS segmentation, AB04PS segmentation, AB05PS segmentation and AB06PS segmentation;
2. described SB1PS segmentation and the anti-state of AB03PS segmentation are always organized, and stand up into dock and locate; Described SB2PS segmentation and the anti-state of AB04PS segmentation are always organized, and stand up into dock and locate; The SFPS shaft bracket has adopted to be fixed in dock on the second pallet base according to theoretical irradiation size and has imbedded in advance, and this SFPS shaft bracket carries out Primary Location according to the dock theoretical axis of dock hull tap graticule; Described SB3PS segmentation as joining section normal state be sitting on the first carriage than the low 100mm of theoretical dock location dimension, enter the pre-buried just location of dock;
3. shaft bracket docks welding equipment location is installed with described AB05PS segmentation: when the upper deck of hull finishes with lower tail main body welding equipment, under just rectification of firer and weld seam film making Qualification, after stern door installs, described AB06PS segmentation is as measuring the baseline basis on location, axle system just possesses the irradiation condition, after irradiation is tried to achieve final axis, described SFPS shaft bracket is finely tuned according to the irradiation axis again, carry out lifting and left and right regulation and control with the cucurbit that arranges in oil pump top and segmentation and orchid screw, prevent from, described SFPS shaft bracket is docked welding equipment with described AB05PS segmentation location is installed, and maintenance is connected the line style fairing, refill the weldering bulk parts,
4. described SB3PS split fix is installed: after the SFPS shaft bracket is installed the location end, the cucurbit that the SB3PS segmentation is pushed up by oil pump and segmentation arranges and the orchid screw that will be positioned on described the first carriage carry out lifting and left and right regulation and control, and embedding is mended between described SB2PS segmentation and described SFPS shaft bracket to position to install and pasted outside plate;
5. in described each segmentation of stern fin structure, stern tube, beam barrel body are arranged, the built-in fitting of front bearing, centre bearer is formally located, then bulk parts is installed, and completes the structural segmented installation with the pedestal dock of overlength twin skeg.
2. the structural segmented installation method with the pedestal dock of overlength twin skeg according to claim 1, it is characterized in that, described the second carriage is vertical latticed form grillage, operation hole while having the location and installation weldering, the floor level setting of this second carriage, this second carriage is placed on the stupefied pier of dock, place oil pump top or angle steel between the base plate of the second carriage and stupefied pier, to regulate the height up and down of shaft bracket, leave the 100mm space between the cross rib position of described the second carriage and the line style of described shaft bracket, adopt channel-section steel to fix between described shaft bracket and the second carriage, to keep shaft bracket and the second carrier structure strength and stability.
3. the structural segmented installation method with the pedestal dock of overlength twin skeg according to claim 1, it is characterized in that, described SB1PS segmentation manufacturing adopt outside plate be the basal plane line style just make moulding bed, note controlling well subsection deformation in the welding equipment stage, carry out structural strengthening, emphasis is carried out the interim reinforcement of the front bearing foundry goods in segmentation and is fixed, segmentation completion and moulding bed are measured before breaking away from, mark waterline, moulding bed line of centers, reference line for frame, during total group, according to datum line, carry out SB1PS and the anti-state of AB03PS is always organized; Being provided with two front axles in this segmentation is simplified formula steel casting, after the first irradiation of axis, determine installation site, according to formal irradiation axis centre line and the perforate welding again of steel casting external diameter, simplified formula steel casting carries out when segmentation is made that interim reinforcement is stood up together with segmentation, handling.
4. the structural segmented installation method with the pedestal dock of overlength twin skeg according to claim 1, it is characterized in that, described SB2PS segmentation manufacturing is adopted with outside plate lateral side wire type moulding bed pulling shaft line, paste inboard outside plate, the interim reinforcement fixed for centre bearer foundry goods in segmentation and stern tube, emphasis is carried out subsection deformation and is controlled, mark waterline, moulding bed line of centers, reference line for frame and AB04PS block assembly before segmentation completion and tread flaking, in different from SB1PS is, four stern tubes and two centre bearers are arranged, will note during installation:
ⅰ, centre bearer are to 8 meters of the stern tube shaft suckers of the described SFPS shaft bracket of stern fin end;
ⅱ, the lifting of consideration complete cross section dock need, and wherein a stern tube is in bulk, and centre bearer is put into segmentation;
ⅲ, because of centre bearer after first irradiation, could welding equipment, so must strengthen temporary fixed.
5. the structural segmented installation method with the pedestal dock of overlength twin skeg according to claim 1, it is characterized in that, described SB3PS segmentation is made, employing is made take the outside plate side as basal plane line style moulding bed pulling shaft line side, paste inboard outside plate, its construction Difficulties is: as joining section, need to consider that the first carriage jacking in the small space zone designs, need the design bulk parts, vacating space, first allow the SFPS shaft bracket locate at dock, must finish just SB3PS section jacking welding equipment in the described SFPS shaft bracket of stern fin end dock location; The SB3PS segmentation need to solve in the jacking process finely tunes line style between surplus mowing and front and back segmentation and is connected fairing, the SFPS shaft bracket of stern fin end and section construction narrow space, structure is intensive, need to install around stern tube, formulate concrete construction procedure, what described SB3PS segmentation and described SB1PS, SB2PS segmentation were different is the first carriage that sets in advance jacking, and its principle of work is to be provided with the truss-like carrier structure of framed plate structure in length and breadth at the segmentation center-of-gravity position to shelve described SB3PS segmentation; Its hanging method is that bottle gouard moved by hands is set above strong component, after described SB3PS segmental hoisting puts in place substantially, by oil pump, pushes up with the orchid screw and adjusts.
CN2011103161228A 2011-10-18 2011-10-18 Installation method of overlong twin-skeg structure segment and shaft bracket dock CN102431626B (en)

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