CN102431626A - 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 PDFInfo
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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
Technical field
The present invention relates to shipbuilding, particularly boats and ships stern fin structure is in the installation of dock, the structural segmented installation method with the pedestal dock of specifically a kind of overlength twin skeg.
Technical background
The large special purposes boats and ships that China builds first with overlength twin skeg line style; 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, has 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 the safety and 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 influences the 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 to guarantee the precision control in the dock installing and locating of twin skeg segmentation and pedestal.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 total group of stern fin structure and twin shafting backguy irradiation carry out smoothly, guarantee that overall build guality adheres to specification, then extremely difficult.
Summary of the invention
The key technical problem that the present invention will solve provides the structural segmented installation method with the pedestal dock of a kind of overlength twin skeg; This method can be guaranteed the precision control in the dock installing and locating of twin skeg segmentation and pedestal; 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 total group of stern fin structure and twin shafting backguy irradiation carry out smoothly, guarantee that overall build guality adheres to specification.
Technical solution of the present invention is following:
The structural segmented installation method with the pedestal dock of a kind of overlength twin skeg, its characteristics are that this method comprises the steps:
1. described twin skeg is made up of single stern fin of two symmetries in hull both sides; Each single stern fin is opened up arm-type steel casting shaft bracket by a tail fin structure and a vee shape and is combined; 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-attitude of AB03PS segmentation are always organized, and stand up into dock location; Described SB2PS segmentation and the anti-attitude of AB04PS segmentation are always organized, and stand up into dock location; The SFPS shaft bracket has adopted at the dock internal fixation according to theoretical irradiation size and on second pallet base, 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 first carriage, enter the pre-buried location just of dock;
3. the upper deck when hull finishes with the weldering of lower tail main hull dress; Under the qualified situation that the firer just corrects and weld seam is made film; 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 propeller shaft bracket is finely tuned based on the irradiation axis again; With the cucurbit that is provided with in oil pump top and the segmentation and the orchid screw goes up and down and about regulate and control; Prevent; Described propeller shaft bracket and described AB05PS segmentation are welded installing and locating to tipping, and keep being connected the line style fairing, refill the weldering bulk parts;
4. after described shaft bracket installing and locating finishes; To be positioned at cucurbit that the SB3PS segmentation on said first carriage is provided with through oil pump top and segmentation with the orchid screw goes up and down and about regulation and control, embedding is mended and is positioned installation subsides outside plate between described SB2PS segmentation and the described shaft bracket;
5. in described each segmentation of stern fin structure stern tube shaft pipe, beam barrel body are arranged, the built-in fitting of front bearing, centre bearer is formally located, and bulk parts is installed again, accomplishes the structural segmented installation with the pedestal dock of overlength twin skeg.
Described second carriage is vertical latticed form grillage; Operation hole when 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; Between the base plate of second carriage and stupefied pier, place oil pump top or angle steel; To regulate the height up and down of propeler bracket, leave the 100mm space between the cross rib position of described second carriage and the line style of described propeler bracket, the described propeler bracket and second holder.
Described SB1PS segmentation manufacturing adopt outside plate be the basal plane line style just make moulding bed; Note controlling well subsection deformation the weldering stage at dress; Carrying out structure strengthens; Emphasis is carried out the interim reinforcement of the fore bearing foundry goods in the segmentation and is fixed; Segmentation completion and moulding bed are measured before breaking away from; Mark waterline, moulding bed center line, reference line for frame, when always organizing, carry out SB1PS and the anti-attitude of AB03PS is always organized based on the said reference line; Being provided with two front axles in this segmentation is simplified formula steel-casting; Behind the first irradiation of axis; Confirm the installation site, according to formal irradiation axis centre line and steel-casting external diameter once more perforate weld, simplified formula steel-casting when segmentation is made, carry out interim reinforcement with segmentation stand up, 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 of centre bearer foundry goods in the segmentation and stern tube shaft pipe fixed, and emphasis is carried out subsection deformation control, marks waterline, moulding bed line of centers, reference line for frame and AB04PS segmented general group before segmentation completion and the tread flaking; In different with SB1PS is four stern tube shaft pipes 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 terminal described SFPS shaft bracket of stern fin;
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 behind first irradiation, could adorn weldering, so necessary reinforcement working fastening.
Described SB3PS segmentation is made, and adopting with the outside plate side is that basal plane line style moulding bed pulling shaft line side is made, and pastes inboard outside plate; Its construction Difficulties is: as joining section; Need to consider the carriage jacking design in the small space zone, need the design bulk parts, vacating space; Let the SFPS shaft bracket locate earlier, must finish in the terminal described SFPS shaft bracket dock of stern fin location just with the weldering of SB3PS section jacking dress at dock; The SB3PS segmentation in the jacking process, need to solve surplus repair cut with the front and back segmentation between the fine setting line style be connected fairing; The SFPS shaft bracket and the section construction space of stern fin end are narrow and small; 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 first carriage that jacking is set in advance, and its principle of work is to be provided with in length and breadth the truss-like carrier structure of framed plate structure 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 basically, adopts the adjustment of turnbuckle formula oil pump roof pressure.
Technique effect of the present invention is following:
The inventive method can guarantee that twin skeg segmentation and pedestal in the precision control of dock installing and locating, 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 total group of stern fin structure and twin shafting backguy irradiation carry out smoothly, guarantee that overall build guality adheres to specification.
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
To combine accompanying drawing and embodiment that the present invention is described further below, but should not limit protection scope of the present invention with this.
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 sides 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 the left and right sides stern tube shaft pipe, in be provided with front bearing, centre bearer, bearing base, stern end are the large-scale V-shape steel casting supports of two band diagonal braces, abbreviate shaft bracket SFPS again as and constitute;
3) stern fin shape curvature line style overlength is nearly more than 50 meters, thus be called the overlength 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 narrow space gradually from being about more than 30 meter between 55#～86#.(seeing Fig. 1 and Fig. 2).Keystone configuration adopts transverse framing system T section bar to add stringers, and left and right sides stern tube shaft is the asymmetric setting in the left and right sides with respect to the hull baseline, and these characteristics have increased twin skeg segmentation manufacture difficulty.To consider that at first axle is the comformability of backguy irradiation location, consider that the beam barrel body installs, front bearing, centre bearer location and installation, the pedestal location and installation, and reserve bulk structure spare and paste the installing space of outside plate.These all are not run into during conventional in the past boat segmental manufacturing is installed with axle system.
For this reason; Confirm to be fit to the structural segmented division of overlength twin skeg, always group and stern complete cross section pedestal installation exercise flow process are most important; Only on definite stern fin structure segmentation division, total group and stern complete cross section pedestal installation exercise process base; Could further confirm follow-up construction technology detailed rules and regulations, comprise the making of frock moulding bed, the carriage of joining section pedestal is used.The complete cross section of stern all must cooperate the core formulation of twin shafting backguy irradiation location 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, accounts for captain's 1/3rd.The mild relatively (see figure 2) of line style can adopt general bottom section construction technology between 39#～55#.And be about more than 30 meter between 55#～86#; Left and right sides tailing axle is the asymmetric setting in the left and right sides with respect to baseline; Axle bag zone has recurvation gesture line style, and 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) to open up arm-type steel casting SFPS shaft bracket be the extension of hull tail fin structure to the vee shape of this ship band diagonal brace, 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 the special complicated steel casting of part-structure, upwards embeds hull structure and docks (laterally dock with 5 grades of floors, vertically embed stringers at the bottom of 3 roads) respectively with floor and stringers; Dock the stern fin to bow with the SB3PS segmentation; The screw shaft pipe of a nearly rice diameter is installed in the structure, and not only the inside processing space is narrow and small, and the installing and locating difficulty is big; And outer bilge block support is intensive, and the construction operation 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 side axle is nearly 35 meters an of length overall, and with baseline angle 0.26, right axle is nearly 50 meters an of length overall, with the baseline angle be 0.20, there are 4 middle bearing pedestals in axle system in a left side, there are 6 middle bearing pedestals in right axle system.These characteristics are that installation accuracy control has been brought bigger difficulty to tail fin shaft all.For guaranteeing that axle is the precision control that inner pedestal is installed, must establishment detailed construction technology.Need consider complete cross section lifting and shaft bracket (vee shape is opened up arm-type steel casting) dock mount scheme for this reason on the whole, guarantee that promptly overweight stern tube shaft is easy for installation, it is excessive to guarantee that again shaft bracket is connected the fairing of outside plate line style with the SB3PS segmentation.
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 accomplished the following 82# transcerse bulkhead of UD upper deck and is all over to the stern hull structure; Stern door installs, and the firer just rectifys and adds weld seam and make film under the up-to-standard situation, just possesses first irradiation condition.
We have carried out a series of activities for solving the structural segmented installation method with the pedestal dock of this overlength twin skeg:
One, the segmentation of stern fin structure is divided and total group technology establishment:
1. it is that the curvature line style is changed the combination that maximum tail fin structure is divided into 3 segmentations and a shaft bracket that described stern fin structure segmentation is divided; See Fig. 2; Be the shaft bracket SFPS that SB1PS, SB2PS, SB3PS segmentation and vee shape are opened up arm-type steel casting, corresponding hull bottom also is divided into AB03PS, AB04PS, AB05PS, AB06PS segmentation, and wherein the anti-attitude of SB1PS and AB03PS is always organized; Stand up into dock location; SB2PS segmentation and the anti-attitude of AB04PS segmentation are always organized, and stand up into dock location, and SB3PS locatees at the enterprising dock of carriage as joining section normal state ground seat; Shaft bracket SFPS predetermined fixed is carried out Primary Location according to the dock theoretical axis of dock hull tap graticule on second pallet base, after the axle system lighting finishes, implement location and installation again;
2. described stern fin structure segmentation is divided and total group technology has combined structural segmented curvature line style variation characteristic of twin skeg and dock construction actual conditions; Confirmed that SB1PS, SB2PS segmentation manufacturing always organize with the anti-attitude of bottom segmentation; Purpose is to reduce the welding deformation of structure, helps the hoisting and locating of dock; Stern tube shaft pipe, 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 backguy 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 the embedding mode of mending in dock, to imbed in advance first with first carriage; Than the low 100mm of theoretical dock location dimension, do not influence top complete cross section and carry, can implement three-dimensional operation;
3. propeller shaft bracket SFPS adopts second carriage; Propeller shaft bracket SFPS is placed on the pedestal of second carriage in advance; Just locate at dock; After the axle system lighting is tried to achieve final axis; Propeller shaft bracket SFPS finely tunes based on the irradiation axis again; With cucurbit that is provided with in oil pump and the segmentation and orchid screw jacking row go up and down and about regulation and control, after accomplishing above-mentioned work, refill and weld bulk parts, subsides outside plate;
Comprehensive above-mentioned stern fin segmentation is divided; Always complete cross section is organized technology establishment, Jiu Shi purpose is in order to satisfy left and right sides biaxial backguy irradiation condition, SFPS and SB3PS segmentation dock location and the dock construction relation that complete cross section carries above it; Control 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:
Confirm 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 technology detailed rules and regulations, implement the sectioned shaft bracket location and installation;
Stern fin segmentation complete cross section dock hoisting and locating, installation procedure are:
The total group of SB1PS segmentation and the anti-attitude of AB03PS segmentation is stood up into dock location;
The total group of SB2PS segmentation and the anti-attitude of AB04PS segmentation is stood up into dock location;
The SB3PS segmentation is in the enterprising dock of first carriage location;
The SFPS shaft bracket is in the enterprising dock of second carriage location;
The AB06PS complete cross section is as measuring the baseline basis on location; UD upper deck finishes with the weldering of lower tail main body dress, and the firer just corrects and weld seam is made film, and qualified stern door installs under the situation, just possesses the irradiation condition.The SFPS shaft bracket is finely tuned after the location confirms according to the irradiation axis, jacking dress weldering SB3PS segmentation and bulk parts subsides 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 formulating by production technology all is at stern deck panel dock rigging out, after the backguy of distortion correction by flame location structure property examination axle system lighting finishes, and could the formal installing and locating of implementing shaft bracket.Concrete method is: the shaft bracket steel casting handling that will be placed in dock is to ship stern deck panel lower position; Large-scale then crane cable wire passes segmentation through interim deck (or platform) auxiliary hole that pre-sets the shaft bracket lifting is put in place; After the axle system lighting is tried to achieve axis, again shaft bracket is positioned and adorns weldering, whole location dress large-scale handling appliance of weldering 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 in the dock installing and locating time, particularly large-scale handling appliance must omnidistancely cooperate.For want of locate backer's center of gravity in the shaft bracket location and installation stage and be difficult to confirm that the shaft bracket that is suspending in midair can be in unsettled swinging condition, be difficult to the one-time positioning success.Divide break deck and inner structure to need the many auxiliary holes of interim increase, need to mend after the pedestal dress has welded and establish work such as auxiliary hole, flaw detection touch-up paint, leave many " scars " on the deck.
2. the carriage new process is adopted in the lifting of stern fin pedestal and SB3PS segmentation dock, promptly special carriage according to the line style manufacturing of stern fin, and the carrier structure form is that base plate is a level, is framed plate structure above.In advance SFPS shaft bracket and SB3PS segmentation are placed on the carriage; In face of the hull general assembly is not also built, place in the dock (SB3PS segmentation primary stage lower when shelving 100mm) in advance according to theoretical dock location dimension, when the irradiation condition is satisfied in the hull manufacturing; The SFPS shaft bracket is finely tuned according to actual irradiation axis and construction situation; During formal location by establish in oil cylinder pushing tow and the segmentation cucurbit, turnbuckle instrument go up and down about regulation and control, in the oil cylinder pushing tow process, the SFPS shaft bracket will effectively be connected with main body; Promote synchronously, prevent; The SB3PS segmentation then is arranged on the dock desired location in advance, and when axle is the backguy irradiation, SFPS shaft bracket installing and locating finishes, and can SB3PS segmentation embedding be mended between SB2PS and the SFPS shaft bracket and position installation.
The present invention has implemented multinomial technology innovation method and has implemented the total group installation of segmentation division manufacturing, and concrete method is following:
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 the weldering stage at dress; Carrying out structure strengthens; Emphasis is carried out the interim reinforcement of the fore bearing foundry goods in the segmentation and is fixed; Segmentation completion and moulding bed are measured before breaking away from; Mark waterline, moulding bed center line, reference line for frame, when always organizing, carry out SB1PS and the anti-attitude of AB03PS is always organized based on the said reference line; Being provided with two front axles in this segmentation is simplified formula steel-casting; Behind the first irradiation of axis; Confirm the installation site, according to formal irradiation axis centre line and steel-casting external diameter once more perforate weld, simplified formula steel-casting when segmentation is made, carry out interim reinforcement with segmentation stand up, 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 of centre bearer foundry goods in the segmentation and stern tube shaft pipe fixed, and emphasis is carried out subsection deformation control, marks waterline, moulding bed line of centers, reference line for frame and AB04PS segmented general group before segmentation completion and the tread flaking; In different with SB1PS is four stern tube shaft pipes and two centre bearers are arranged, consider from three aspects during installation:
I, centre bearer foundry goods are to 8 meters on the effective foot of terminal foundry goods (SFPS) this section stern tube shaft of stern fin;
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 behind first irradiation, could adorn weldering, so necessary reinforcement working fastening;
3. the SB3PS segmentation is made; Employing is that basal plane line style moulding bed pulling shaft line side is made with the outside plate side, pastes inboard outside plate, and its construction Difficulties is: as joining section; Need to consider the carriage jacking design in the small space zone; Need vacating space that bulk parts is installed, let the SFPS shaft bracket locate earlier, must strengthen finishing jacking dress weldering SB3PS segmentation in terminal steel casting (SFPS) dock of stern fin location at dock; In the jacking process, need to solve surplus repair cut with the front and back segmentation between the fine setting line style be connected fairing; Terminal foundry goods of stern fin and section construction space are narrow and small; Structure is intensive, needs to install around central siphon, formulates concrete construction procedure; Wherein different with SB1PS, SB2PS is that the first jacking carriage is set in advance, and its principle of work is to be provided with in length and breadth the truss-like carrier structure (pedestal) of framed plate structure (20mm thickness) 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 basically, adopts the adjustment of turnbuckle formula oil pump roof pressure.
Use the method for drawing wire to carry out the location of axle housing, will note the concentricity of axle housing and axis during the location, the correctness of shaft bracket position, the lateral dimension of armshaft; Simultaneously also to measure SB3PS segmentation finish size in advance, guarantee that axle is that the accuracy of screw shaft pipe installation and the fairing of outside plate are connected.
1) when hull construction state satisfies construction outline and propeler bracket mounting process conditional request; Formal irradiation backguy; By oil pump pushing tow and cucurbit, turnbuckle etc. go up and down with about regulation and control; Final definite outside plate line style shaft bracket is installed, and whole shaft bracket location dimension is finely tuned, at last the bulk parts of dress weldering structural frame and shaft bracket connecting bridge.Built-in type carriage shaft bracket novel process for installing is used great advantage:
A, the lift-launch of dock general section of shipbody, docking block, high mop are put (around the 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 70% in time and accomplish 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 under the very busy situation) can be reduced 3/4 of crane period of service through implementing statistics.
2) deck no longer need be established many interim auxiliary holes (the former crane cable wire that let before this passes deck handling propeler bracket) newly, reduces unnecessary interim perforate, mend not to have and the flaw detection work capacity, make technological design and the implementation phase all have an operability.
Four, the application of built-in type carriage
1. built-in type carriage: making is to design the carriage (being equivalent to pedestal) of shelving the shaft bracket steel casting in advance in boat docking location.With reference to the pedestal method for making of enterprise's " boats and ships pedestal and additional strengthening design rule ", through the sheet material load-carrying capacity calculate thickness of slab in 16mm～20mm left and right sides available A grade steel plate.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.Between pedestal bottom plate and stupefied pier, can place oil pump (or angle steel), play and regulate propeler bracket height up and down.Leave 100mm space (see figure 6) between cross rib position and the shaft bracket line style.Pedestal and tray chamber adopt channel-section steel to fix, to keep pedestal and carrier structure intensity and stability.
2. the location and installation of shaft bracket dock
According to the hull tap graticule, earlier 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 backguy, carry out the shaft bracket location according to backguy and other theoretical sizes then.
Overlength double tail fins linear structure is built the construction technology through initiative, has controlled the curvature line style effectively and has changed stern fin subsection deformation greatly, has guaranteed the construction precision.Wherein total group lifting, screw shaft pipe are installed, carriage is used technologies such as SFPS tail fin end support dock installation; Has novelty; Guaranteed that fully stern fin outside plate line style is a setting accuracy with axle in the dock; Shorten shipbuilding period, realized the new breakthrough of overlength double tail fins linear structure pedestal construction technology.
We pass through detailed analysis and study; Make a cover proper construction technology and instruct segmentation manufacturing of stern fin and dock location and installation; Implement the installation accuracy control of Super Long-axles system, used to novelty multinomial new process first, 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 that the inventive method can guarantee that twin skeg segmentation and pedestal in the precision control of dock installing and locating, 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 total group of stern fin structure and twin shafting backguy irradiation carry out smoothly, guarantee that overall build guality adheres to specification.
Claims (5)
1. the structural segmented installation method with the pedestal dock of an overlength twin skeg is characterized in that this method comprises the steps:
1. described twin skeg is made up of single stern fin of two symmetries in hull both sides; Each single stern fin is opened up arm-type steel casting SFPS shaft bracket by a tail fin structure and a vee shape and is combined; 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-attitude of AB03PS segmentation are always organized, and stand up into dock location; Described SB2PS segmentation and the anti-attitude of AB04PS segmentation are always organized, and stand up into dock location; The SFPS shaft bracket has adopted at the dock internal fixation according to theoretical irradiation size and on second pallet base, 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 first carriage, enter the pre-buried location just of dock;
3. shaft bracket and described AB05PS segmentation are to tipping weldering installing and locating: when the UD upper deck of hull finishes with the weldering of lower tail main body dress, under the qualified situation that the firer just corrects and weld seam is made film, after stern door installs; Described AB06PS segmentation is as measuring the baseline basis on location, and 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; With the cucurbit that is provided with in oil pump top and the segmentation with the orchid screw goes up and down and about regulation and control, prevent, described SFPS shaft bracket and described AB05PS segmentation are welded installing and locating to being hinged with; And keep being connected the line style fairing, refill the weldering bulk parts;
4. described SB3PS split fix is installed: after SFPS shaft bracket installing and locating finishes; To be positioned at cucurbit that the SB3PS segmentation on said first carriage is provided with through oil pump top and segmentation with the orchid screw goes up and down and about regulation and control, embedding is mended and is positioned installation subsides outside plate between described SB2PS segmentation and the described SFPS shaft bracket;
5. in described each segmentation of stern fin structure stern tube shaft pipe, beam barrel body are arranged, the built-in fitting of front bearing, centre bearer is formally located, and bulk parts is installed again, accomplishes 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 is characterized in that, described second carriage is vertical latticed form grillage; Operation hole when having the location and installation weldering; The floor level setting of this second carriage, this second carriage are placed on the stupefied pier of dock, between the base plate of second carriage and stupefied pier, place oil pump top or angle steel; To regulate the height up and down of propeler bracket; Leave the 100mm space between the cross rib position of described second carriage and the line style of described propeler bracket, adopt channel-section steel to fix between the described propeler bracket and second carriage, to keep propeler bracket and carrier structure intensity 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 dress weldering stage; Carrying out structure strengthens; Emphasis is carried out the interim reinforcement of the front bearing foundry goods in the segmentation and is fixed, and segmentation completion and moulding bed are measured before breaking away from, and mark waterline, moulding bed line of centers, reference line for frame; During total group, carry out SB1PS and the anti-attitude of AB03PS is always organized according to the said reference line; Being provided with two front axles in this segmentation is simplified formula steel casting; Behind the first irradiation of axis; Confirm the installation site, according to formal irradiation axis centre line and steel casting external diameter once more perforate weld, simplified formula steel casting when segmentation is made, carry out interim reinforcement with segmentation stand up, 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, pastes inboard outside plate, and interim the reinforcement fixed for centre bearer foundry goods in the segmentation and stern tube shaft pipe; Emphasis is carried out subsection deformation control; Mark waterline, moulding bed line of centers, reference line for frame and AB04PS segmented general group before segmentation completion and the tread flaking, in different with SB1PS is four stern tube shaft pipes and two centre bearers arranged, will note during installation:
I, centre bearer foundry goods are to 8 meters of the stern tube shaft suckers of the terminal described SFPS shaft bracket of stern fin;
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 behind first irradiation, could adorn weldering, so necessary reinforcement working fastening.
5. the structural segmented installation method with the pedestal dock of overlength twin skeg according to claim 1 is characterized in that described SB3PS segmentation is made; Employing is that basal plane line style moulding bed pulling shaft line side is made with the outside plate side; Paste inboard outside plate, its construction Difficulties is: as joining section, need to consider the carriage jacking design in the small space zone; Need the design bulk parts; Vacating space lets the SFPS shaft bracket locate at dock earlier, must finish in the terminal described SFPS shaft bracket dock of stern fin location just with the weldering of SB3PS section jacking dress; The SB3PS segmentation in the jacking process, need to solve surplus repair cut with the front and back segmentation between the fine setting line style be connected fairing; The SFPS shaft bracket and the section construction space of stern fin end are narrow and small; 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 first carriage that jacking is set in advance, and its principle of work is to be provided with in length and breadth the truss-like carrier structure of framed plate structure 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 basically, adopts the adjustment of turnbuckle formula oil pump roof pressure.
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