CN105000462B

CN105000462B - Split type hoisting method for 5MW land type wind generating set

Info

Publication number: CN105000462B
Application number: CN201510319729.XA
Authority: CN
Inventors: 李明强; 张亭森; 郗太峰; 于景龙; 王怀成; 杨政; 张庆敏
Original assignee: SEPCO1 Electric Power Construction Co Ltd
Current assignee: SEPCO1 Electric Power Construction Co Ltd
Priority date: 2015-06-11
Filing date: 2015-06-11
Publication date: 2017-01-11
Anticipated expiration: 2035-06-11
Also published as: CN105000462A

Abstract

The invention discloses a split type hoisting method for a 5MW land type wind generating set. According to the method, a cabin is hoisted in a split mode, and split into a cabin body, a generator, a maintenance crane and a top housing according to the weight and the boundary dimension of all parts of the cabin and the hoisting capacity of a main hoisting machine; after the cabin is split, software is utilized for analyzing and recalculating the gravity center position to adjust the design of a hoisting sling, and therefore the level and the safety of cabin hoisting are ensured. The main hoisting machine is utilized for sequentially installing the cabin body and the generator in place and sequentially installing the maintenance crane and the top housing in place. According to a general scheme, a 1600t crawler crane is needed when a whole hoisting scheme is adopted for a 5MW fan, while by means of the implementation of the method, the construction requirement can be met by adopting a 1000t crawler crane, and therefore the construction cost is effectively saved.

Description

The split type hanging method of 5MW land counterpart wind power generating set

Technical field

This invention relates to 5MW land counterpart wind power generating set installation method technical field, and specifically a kind of 5MW is land The split type hanging method of type wind power generating set.

Background technology

5MW wind power generating set is a kind of brand-new ultra-large type Wind turbines, and generating rated power has reached 5000KW/h, Have employed the multiple advanced technologies such as electronic independent pitch, active driftage, speed change double-fed, can start under low gustiness, More can effectively utilize wind energy resources than conventional power unit, there is extraordinary promotion prospect.But the nearly kiloton of blower fan overall weight (cabin Weight about 300t, impeller weight about 130t, tower weight about 600t), setting height(from bottom) has exceeded 150m, and lifting construction difficulty is big.

Generating set is the parts that in fan part, weight is the heaviest, the highest, is to affect whole blower fan lifting machine type selecting Crucial.All using the method that monoblock type lifts before generating set, the specification requirement to required hoisting machinery is relatively big, there is machine The problems such as tool resource is few, site requirements is high, construction cost is big and security risk is wayward, therefore hang for reducing generating set Hoisting machinery specification needed for dress is to solve problem above, and traditional hoisting of generating set is improved by we, invention The split type hoisting technology of wind power generating set.

Wind power generating set is carried out rational split, has reduced the maximum single hoisting weight of blower fan lifting, thus reduce The blower fan lifting specification requirement to hoisting machinery；Additionally take after effective measures ensure that wind power generating set split each point Body component safety and precision are installed again.

Summary of the invention

In order to solve the deficiencies in the prior art, the present invention provides a kind of 5MW split type hanging method of land counterpart wind power generating set, Use split type lifting by cabin, reduce the single hoisting weight that wind power generating set is installed, reduce main hoisting machinery lifting The requirement of performance.Former scheme integral hoisting scheme is needed 1600t crawler crane, through the enforcement of the present invention, changes into using 1000t Crawler crane i.e. meets construction requirement, is effectively saved construction cost.

The technical solution adopted for the present invention to solve the technical problems is: the split type lifting side of 5MW land counterpart wind power generating set Method, it is characterised in that:

Step one, prepare main arrangement for crane machinery be 1000t crawler crane, auxiliary arrangement for crane machinery be 150t crawler crane；Described tower, machine Cabin, wheel hub, blade are marched into the arena to unload by planned position and are put, and equipment is put principle and is:

1) six sections of tower be placed sequentially in around main crane and allow the upper flange of tower towards main crane or away from foundation ring direction, And within six sections of tower are arranged in the radius of clean-up of main crane lifting safe and reasonable；

2) cabin is placed in against blower foundation ring position, and within main crane revolution range；

Step 2, end section tower lifts

1 lifting preparation:

1) installation dimension of end section tower drum flange should be in the range of location tolerance, ovality≤2mm, uses ovality detector multiple Survey, as undesirable needs correct before lifting；

2) check inside cleaning flange face, bolt hole, end section tower；

3) complete end section tower cable laying before lifting and tower is electrically installed；

4) bearing plate flange face horizontal error is checked: measuring the horizontal absolute altitude of 8 symmetrical points, absolute altitude deviation≤3mm is Qualified；And in backing plate flange bolt, a circle fluid sealant is respectively smeared in outside before end section tower is installed；

2 liftings are erect

1) hanger is installed and rigging is tied

500T truck crane and 150t crawler crane double-machine lifting crane are selected in section tower lifting in the end, install tower Special lifting lug at hoisting point position And it is tied special hanger for hoisting, wherein, upper flange surface is installed according to 1 thirty, 4 thirty, 7 thirty, four positions, 10 thirty Four hangers, use the lifting of 500t truck crane, and lower flange, by 1 thirty, two hangers of position installation 10 thirty, uses 150t Crawler crane lifts by crane；

2) double-machine lifting crane and complete tower erect

3) end section tower installation in place

150t crawler crane bull stick is to directly over foundation ring, and off the hook contacts to tower lower flange face with foundation ring flange face, installs institute After having fastening bolt connection auxiliary, slowly let-down tower, main crane keeps 30% load, pretension bolt, and after fastening, master hangs Car machinery off the hook does not stresses to rigging, removes tower top hanger；

4) end section tower bolt tension

End section tower has lifted rear fan basis and has used high intensity contraction-free grouting concrete that backing plate flange is carried out back-grouting, and presses Bolt, to qualified intensity, is finally stretched by regulation maintenance；

5) end section tower internal control cabinet is installed；

Step 3, in, top tower lifting

1 lifting preparation lifts with end section tower, and also includes respectively smearing outside in installing the upper flange bolt hole of tower One circle fluid sealant by all nut shims to be installed on deck；

2 select 1000t crawler crane and 150t crawler crane double-machine lifting crane, and hanger is installed, rigging is tied and wants with double-machine lifting crane technique Seek common ground end section tower；

1) tower installation in place

By 1000t crawler crane tower of slinging to above the upper surface flange of next joint tower, before the contact of two flange faces, put on Alignment pin locates, and installs bolt from the bottom up in each alignment pin both sides, after installing the 1/3 of sum, again lowers suspension hook extremely Two flange faces completely attach to, and remove alignment pin, have installed all bolts of residue, and then crane load is down to 30%, by cross Horn cupping is completed tower attachment bolt first tightly, pre-fastening moment 1000N m, re-use hydraulic torque spanner and divide three by regulation moment Secondary completing the eventually tight of tower attachment bolt, three times Tightening moment value is respectively 50%, 75%, the 100% of bolt clamp force at end square；

When tower is installed, as occurred, tower drum flange deforms, it is impossible to penetrate all bolts, and blunderbuss head need to be used to carry out the rectification of flange, Antidote is: cannot penetrate insertion blunderbuss head at the bolt hole of bolt, and enter with hammer so that the flange of deformation is fitted Answering property deforms.

3 top section tower liftings

Being fixed in advance by part anti-torsion cable between cabin to tower on the section atop a tower platform of top before lifting, tower couples spiral shell Bolt and the interim fixation of tower, with tower synchronous hoisting, hanger is installed, rigging is tied with double-machine lifting crane technological requirement with end section Tower；

Step 4, determine cabin split scheme

It is cabin main body, electromotor, maintenance crane and four parts of top case by cabin split；

Step 5, center of gravity calculation and suspender select

Software analysis calculates, and determines the position of centre of gravity of residue cabin main body；

Equalizer bar suspender is selected in cabin integral hoisting, and described equalizer bar suspender is by four suspension centre lifting cabins, it is ensured that cabin lifts During balance；

Step 6, cabin split

At the circumferential mounting and positioning device of electromotor, and dismounting overall process is made a record, by electromotor and generator support from machine Pulling down in cabin and case, the coupling guard removed in cabin and shaft coupling are placed in and are fixed on nacelle rear platform；

Step 7, cabin main body lift

1 cabin lifting

1) lifting cabin: two cable wind ropes stablizing cabin of bolt, installs alignment pin, hangs up properly cabin equalizer bar suspender, Main crane slowly lifts by crane cabin to leaving ground, removes cabin transport support, checks yaw screwed hole, it is ensured that screw thread can be suitable Profit is screwed into bolt, and main crane continues to hook up, and controls direction, cabin by pulling cable wind rope, slowly promote cabin from upwind in lifting, Control engine opening towards crane arm；

2) cabin is in place: after cabin is lifted to setting height(from bottom), and the revolution of main crane makes cabin be in above the section tower drum flange of top, will Cabin coupling bolt hole slowly puts down cabin after aliging with tower upper bolt hole, stops when section tower drum flange about 50, top, first First locating with the alignment pin installed on cabin, then 5 bolts are respectively installed at 4 angles, slowly by cabin off the hook after tightening Until two flanges completely attach to, regulate cabin, pull down alignment pin, with electric wrench press after cross bolt complete to horn cupping pretension by Gradually reduce crane load, finally press cross at twice with hydraulic torque spanner and section tower and cabin attachment bolt are pushed up in horn cupping fastening, Main crane off the hook, removes cabin suspender rigging；

Step 8, the lifting of split parts and assembling

Sling successively electromotor, maintenance crane, anterior overhead guard and middle part overhead guard to cabin and assembles；

Step 9, impeller combine

Blade is lifted slowly to wheel hub by main crane and the cooperation of auxiliary crane, uses to complete blade group in this blade 35.5m position Auxiliary crane pocket hangs, and installs special blade locking device on wheel hub by blade locking；

Step 10, impeller lift

Main and auxiliary crane car is in place, and the suspender of main crane is 2 flat sling compositions, suspender belt distance vane rain-retaining plate 1m；Auxiliary Crane suspender is a suspender belt, and trailing edge adds V-type backplate, lays felt, cable wind rope on auxiliary suspender belt root bolt in backplate So that impeller removes auxiliary suspender belt the most afterwards, main and auxiliary crane lifts by crane simultaneously, and lifting impeller leaves ground 1.5m until wheel hub, Cleaning docking bolt hole, flange face, install wheel hub and cabin main shaft attachment bolt, then install three correctings in wheelboss flange face Rod, position is 2 o'clock, 6 o'clock, 10 o'clock, keeps blade tip to be consistently higher than ground 0.5m, makes impeller from lifting state progressively Become upright state, remove auxiliary crane suspender when whipline does not carries, then adjust impeller upright position and make wheelboss flange face With the horizontal 85 °, tension cable wind rope keeps impeller central slowly to dock impeller and cabin with after main axis parallel, vertical at impeller After, three blades should be at " Y " font；

When wheelboss flange is close to cabin flange, main crane is slow in one's movements, unclamps cabin stop pin, is adjusted by cabin main shaft jiggering So that aligning bolt hole, impeller and cabin attachment bolt all penetrate after first by electric wrench by cross to horn cupping pretension, Then hydraulic spanner is used by cross, horn cupping to be fastened to regulation moment values in three times；

After impeller installs, remove impeller suspender, blade tip protective jacket and cable wind rope, impeller slowly rotated so that it is in a leaf Sheet blade tip direction straight down, uses bolt tensioning jack to stretch this blade bolt；Three blades all become oar to feather position, dismounting Blade locking device, completes lifting.

Further, section tower bolt tension of the described end must be carried out after back-grouting reaches qualified intensity, end section tower purgation Blue Internal and external cycle bolt is respectively 96, it is adaptable to is all arranged symmetrically with by 120 ° of interval inside and outside 6 stretchers and stretches simultaneously, pretightning force 730kN, bolt stretches in three times, and each interval time is no less than 30 minutes, three tensile forces be respectively bolt clamp force at end 50%, 75%, 100%.

Further, before cabin is lifted by crane, also include one and go off course lightning protected pawl and the sub-step of alignment pin, installation site are installed It is: 2 o'clock, 6 o'clock, 10 o'clock.

Further, described special hanger for hoisting is made up of hanger shackle, steel wire rope, coaster and suspender belt.

Further, described equalizer bar suspender is made up of trapezoidal hanging beam, shackle and hanging belt, under the dedicated hanging beam for hanging of described cabin Face is connected with cabin suspension centre by four vertically arranged hanging belts, is hung on main arrangement for crane machinery suspension hook above with four hanging belt bolts On.

Further, after in generator hanger to cabin complete by specified force first by coaxiality detector centering axiality, centering Square fastening shaft coupling attachment bolt.

Further, in step 9, detailed process is:

1) 1000t crawler crane suspender belt at blade L=1.5m through, 150t crawler crane suspender belt at L=35.5m through, rear The position that portion's crane suspender belt passes, on pad, the protection board of front and rear edge is with support blade；

2) keeping blade level, two cranes lift and blade are raised to suitable height, remove blade root support and blade tip support,

3) being lifted by blade slowly to wheel hub, first with the bolt of electric wrench pretension wheel hub with blade junction, group is to complete Blade, in this blade 35.5m position, hangs with whipline pocket, it is to avoid blade is installed tailheaviness deviation and caused wheel hub rollover and blade Afterbody lands, and assembles second, the 3rd blade by above-mentioned steps.

Further, in step 8, the detailed process of electromotor is:

1) after installing suspender on electromotor hanger, start main crane car, from the slow lifting hook of upwind, check suspender The most suitable: after lifting, generator support side mounting plane should be vertical, otherwise should put down electromotor and readjust lifting rope length, Make generator support side mounting plane after slinging vertical；

2) electromotor that continues to sling, to when exceeding nacelle top, adjusts generator position so that putting into cabin smoothly, And mounted positioner carries out electromotor thick centering installation before utilizing electromotor dismounting；

3) cleaning generator support side mounting plane, makes generator support side fit with main support trailing flank, props up with hydraulic pressure Fagging hands fastening nut successively；

4), after generator support installation, the generator cable of top tower barrel platform will be placed on according to generator terminal figure even Receive on the stator terminal of electromotor, rotor-end and earth terminal.

Further, in step 8, the detailed process of shaft coupling is:

1) brake disc of shaft coupling gear box side band diaphragm group is installed on gear-box in advance, and electromotor leaves after installing thick centering Begin to install shaft coupling generator side diaphragm group, cleaning swelling device bore area and electromotor spindle nose, by the flange of band diaphragm group and Swelling device pushes electromotor spindle nose, adjusts installation dimension and ensures that brake disc surface and swelling device flange surface distance meet requirement Uniformly tighten bolt on swelling device, the most urgent moment；

2) cleaning intermediate and the installed surface of diaphragm group, degreasing, rotate gear box side assembly and generator side assembly, make two Bolt is installed in the diaphragm group of limit be aligned on the same line, loads connecting bolt, load intermediate, tighten by hand installation bolt and Nut, allows moment limiting device in electromotor side.Cinch bolts all on locking nut are unclamped, it is ensured that bolt head does not exposes Swelling nut, hands tightens locking nut until very close to each other between diaphragm, locking nut unscrews 1/4 circle, and manual the intersection tightens Four cinch bolts of crossing distribution, intersect after tightening these four cinch bolts, more uniformly tighten all cinch bolts. Finally repeatedly twist all cinch bolts twice with torque spanner again.

The invention has the beneficial effects as follows:

Cabin uses split type lifting, reduces the single hoisting weight that wind power generating set is installed, reduces main hoisting machinery The requirement of lifting performance.According to general approach, 5MW blower fan uses integral hoisting scheme to need 1600t crawler crane, through optimizing Arrangement and method for construction, actual employing 1000t crawler crane i.e. meets construction requirement, is effectively saved construction cost.

This method carries out careful design adjustment to hoisting rig, it is ensured that the horizontality of cabin main body lifting, it is simple to cabin main body Installation in place, it is ensured that lifting work safety.

Use Special Locking device locking-blade when blade assembles with wheel hub, it is to avoid during assembling and lifting by crane, blade rotates, improve The steadiness of hanging device and the ability to ward off risks.

This method, on the basis of conventional blower tower mounting process, adds tower lifting forward flange dish ovality repetition measurement technique, protects Demonstrate,prove tower docking and degree of accuracy that cabin is installed, it is to avoid high-altitude correction flange, it is ensured that construct continuously.

Accompanying drawing explanation

Fig. 1 is lifting schematic flow sheet.

Fig. 2 unloads layout for lifting area equipment.

Fig. 3 is that tower lower flange lifts schematic perspective view.

Fig. 4 is that tower lower flange lifts schematic diagram.

Fig. 5 is that tower upper flange lifts schematic diagram.

Fig. 6 is the lifting state of Fig. 3.

Fig. 7 is the lifting front view in cabin.

Fig. 8 is the lifting top view in cabin.

Fig. 9 is node schematic diagram at C in Fig. 7.

Figure 10 is node schematic diagram at B in Fig. 7.

Figure 11 is node schematic diagram at A in Fig. 7.

Figure 12 is the axonometric chart of equalizer bar suspender.

Figure 13 is the installation site schematic diagram of correcting rod in wheel hub.

Figure 14 is the axonometric chart of correcting rod.

Figure 15 is the axonometric chart of impeller locking bed.

Figure 16 is the placement schematic diagram of blade.

Figure 17 is the lifting schematic diagram of blade.

Figure 18 is the schematic diagram of impeller locking bed locking-blade.

In figure: 1 tower, 11 hangers, 2 cabins, 21 hanging belts, 21 ' hanging belts, 22 equalizer bar suspenders, 3 impeller lockings Seat, 4 wheel hubs, 41 correcting rods, 5 locking-blades.

Detailed description of the invention

As shown in Fig. 1 to Figure 18, for existing engineering problem, the protection main body of this patent is as follows:

Exploitation is the 5MW split type hanging method of land counterpart wind power generating set, and its basic principle is, cabin uses split Formula lifts, and according to each component weight in cabin, overall dimensions and main hoisting machinery elevating capacity, cabin split is cabin main body, is sent out Motor, maintenance crane and top case four part.Before the split of cabin, install the positioner in three directions of electromotor, carry out Dismounting overall process record, in order to again install.Electromotor is pulled down from cabin and cases, and carries out moistureproof dust prevention.In cabin The coupling guard removed and shaft coupling are placed on nacelle rear platform, fixation.

Utilize software analysis after the split of cabin, recalculate position of centre of gravity, be designed hoisting sling adjusting, it is ensured that cabin is hung The level of dress and safety.

Main hoisting machinery is utilized to install in place by cabin main body, electromotor successively.Electromotor installs shaft coupling after utilizing positioner centering Device and shaft coupling case.Flange and the swelling device of band diaphragm group are pushed electromotor spindle nose when installing by shaft coupling, control braking well Panel surface and the distance of swelling device flange surface, fastening bolt on request；Turning gear roller box and generator side assembly, make respectively Bolt is installed in the diaphragm group of both sides be aligned on the same line, loads connecting bolt and intermediate, fasten all bolts on request.

Main hoisting machinery is utilized to install in place by maintenance crane and top case successively.

Based on the description above, the method simultaneously inventing offer is as follows: main process is as shown in Figure 1.

Step one, lifting region ground reference is standby and Fan Equipment is unloaded

1 combines each component weight of 5MW blower fan, sling height and overall dimensions, the main hoisting machinery used during selected blower fan lifting It is 150t crawler crane for 1000t crawler crane, auxiliary loop wheel machine tool, and one 500t truck crane of juryrigged.Lifting machine requires work Making ground must be solid smooth, and lifting operation area size, flatness, earth bearing strength meet machinery and use requirement.

The equipment such as 2 blower fan tower barrels, cabin, blade are marched into the arena to unload by planned position and are put, and such as Fig. 2, equipment is put principle and is:

1) 5MW blower fan one piece apparatus weight is big, overall dimensions big, and the equipment in lifting region of must making rational planning for is arranged to avoid existing Field Secondary Transport.The equipment such as blower fan tower barrel, cabin, blade are marched into the arena to unload by planned position and are put, and six sections of tower are placed sequentially in Main hang around and planned the upper lower flange of tower towards, wherein the upper flange of tower is towards main crane or away from foundation ring direction, To facilitate lifting, reduce the steering operation time.According to the main lifting performance hung, six sections of tower all should be arranged in master and hang Hoisting Security Reasonably within the radius of clean-up, during lifting, master hangs without sport car back and forth, shortens the lifting time.Simultaneously to whipline sport car road Line carries out smooth compacting in advance with lifting operating area, and during tower lifting, whipline is by the route sport car designed, and assists successively Lift six sections of tower.

2) cabin unload assembling time should be against blower foundation ring position, cabin center of gravity is hung the centre of gyration and is controlled within 24m to leading, The purpose being arranged so as to is easy for cabin lifting, and during lifting, master hangs and cabin need to winch to height in place, and revolution can complete by a small margin The lifting in cabin, it is to avoid main risers carries sport car operation, shortens high-altitude, the cabin time of staying as far as possible simultaneously, reduces lifting Risk.Lifting region crane and Fan Equipment are arranged and are seen Fig. 2.

Step 2, end section tower lifts

End section tower needs after having lifted to carry out blower foundation back-grouting.Utilize the time group of blower foundation back-grouting maintenance Knit main hoisting machinery to march into the arena assembling.500t truck crane and 150t crawler crane double-machine lifting crane are selected in section tower lifting in the end.

1 lifting preparation:

1) installation dimension of tower drum flange should be in the range of location tolerance, ovality≤2mm, uses special ovality detector multiple Survey.As undesirable needs correct before lifting.

2) cleaning flange face, bolt hole are checked, it is ensured that clog-free, no-sundries in flange face cleaning, bolt hole.Inside tower Must clean out.

3) complete tower cable laying before lifting and tower is electrically installed.

4) bearing plate flange face horizontal error is checked: measuring the horizontal absolute altitude of 8 symmetrical points, absolute altitude deviation≤3mm is Qualified.

5) before section tower in the end is installed, in backing plate flange bolt, a circle fluid sealant is respectively smeared, by all nut pads to be installed in outside Sheet is placed in bolt both sides.

6) screw thread of all bolts is lubricated on request.

2 liftings are erect

1) hanger is installed and rigging is tied

Installing tower 1 Special lifting lug at hoisting point position and be tied special hanger for hoisting, upper flange surface both sides are according to 1 thirty, 4 points Half, four hangers 11 are installed in 7 thirty, four positions, 10 thirty, such as Fig. 3, Fig. 4 and Fig. 6, lower flange by 1 thirty, 10 Thirty, 2 hangers (see Fig. 5) were installed in position.

The most above-mentioned hanger (11) uses double bolt fastening, improves bonding strength.

This suspender is different from conventional type blower fan tower barrel suspender.For the feature that 5MW blower fan tower barrel weight and diameter are the biggest, in order to Avoid tower drum flange deformation in hoisting process to cause high-strength bolt cannot install and guarantee the safety of lifting smoothly, tower is hung Tool is redesigned.This suspender is made up of hanger shackle, steel wire rope, coaster and suspender belt, utilizes coaster by steel wire rope string rope Carrying out sharing of load, change sliding friction is rolling friction.Stationarity during being so conducive to tower to erect, it is ensured that lifting Safety.

2) double-machine lifting crane and complete tower erect

Two cars hook up simultaneously, and after tower leaves ground, main hanging continues to hook up, and whipline coordinates walking, turns to.Treat that tower is erected After Zhi, after whipline off the hook, bar of lying prone rope to be lifted do not stress, remove whipline lifting rope and hanger.

3) tower installation in place

The main bull stick that hangs is to directly over foundation ring, and slow off the hook contacts to tower lower flange face with foundation ring flange face, and now crane is still Need to keep lifting power, install all fastening bolts couple auxiliary after, slowly let-down tower, main hang holding 30% load, with electronic Spanner rapid pretension bolt on request.After fastening, main hoisting machinery off the hook does not stresses to rigging, removes tower top Special-purpose hanger Ear.

4) end section tower bolt tension

End section tower has lifted rear fan basis and has used high intensity contraction-free grouting concrete that backing plate flange is carried out back-grouting, and presses Regulation maintenance is to qualified intensity.End section tower bolt tension must be carried out after back-grouting reaches qualified intensity, tower lower flange Internal and external cycle bolt is respectively 96, it is adaptable to is all arranged symmetrically with by 120 ° of interval inside and outside 6 stretchers and stretches simultaneously, pretightning force 730kN.Bolt stretches in three times, and each interval time is no less than 30 minutes, three tensile forces be respectively bolt clamp force at end 50%, 75%, 100%.

6) end section tower switch board is installed.

Utilize chain block that TBC switch board, auxiliary transformer etc. are entered from tower door and installed.6kV switch cubicle, 40.5kV Switch cubicle whipline hangs at the end detachable mouth of section tower upper brace.

Step 3, middle and upper part tower lift

1 lifting preparation

1) installation dimension of tower drum flange should be in the range of location tolerance, ovality≤2mm, uses special ovality detector Repetition measurement.As undesirable needs correct before lifting.

2) cleaning flange face, bolt hole are checked, it is ensured that clog-free, no-sundries in flange face cleaning, bolt hole.Inside tower Clean out.

4) before hypomere tower is installed, in the upper flange bolt hole installing tower, outside is respectively smeared a circle fluid sealant and will be needed The nut shim installed is on deck.

5) screw thread of all bolts is lubricated on request.

2 main hoisting machinery are marched into the arena

Main hoisting machinery 1000t crawler crane is arranged to march into the arena assembling during the back-grouting maintenance of basis.It is the least that tower weight is saved in middle and upper part five In end section tower, by 1000t crawler crane and 150t crawler crane double-machine lifting crane.

3 liftings are installed

1) hanger is installed, rigging is tied with double-machine lifting crane technological requirement with end section tower.

2) tower installation in place

4 top section tower liftings

Being fixed in advance by part anti-torsion cable between cabin to tower on the section atop a tower platform of top before lifting, tower couples spiral shell Bolt and the interim fixation of tower, with tower synchronous hoisting.Top section tower lifting with cabin lift do not allow interval more than 12 hours, So top section tower lifting need to select to start in the morning, after having lifted, immediately begin to the lifting in cabin.Cabin suspender suspender belt is in advance Install, to reduce the workload on the cabin lifting same day.Must fully carry out cabin lifting before the section tower lifting of top corresponding simultaneously Preparation, all Work tools on deck and check confirmation, and alignment pin prepares abundance in advance, and be determined in advance main hang super Playing the putting position of counterweight, super-starting balance weight is put complete in advance in order.

Step 4, determine cabin split scheme

The installation accuracy again of 1 each parts can be guaranteed；

The installment work again of 2 each parts ensure that the safety of operating personnel；

3 existing machinery resources can meet split after the lifting demand of each parts.

It is cabin main body, electromotor, maintenance crane and four parts of top case according to above-mentioned technical standard to cabin split.

Step 5, center of gravity calculation and suspender select

According to computer software analysis, according to integral hoisting mode, cabin position of centre of gravity is at distance tower center 1266mm.

After electromotor, maintenance crane, top case and generating set main body split, calculate through software analysis, remain cabin The position of centre of gravity of main body becomes at distance tower center 860mm.

Equalizer bar suspender 22 is selected in cabin integral hoisting, and this equalizer bar suspender is by land cabin dedicated hanging beam for hanging, shackle and hangs Dress band composition, such as Fig. 7 to Figure 12.This suspender is by four suspension centre lifting cabins, it is ensured that the balance in the hoisting process of cabin；Machine Cabin 2 lifts special balancing beam suspender and is connected with cabin suspension centre below by hanging belt 21, is hung on above with hanging belt 21 ' bolt On main hoisting machinery suspension hook.When hanging belt 21 lifts in cabin up and down vertically, angle all in 90 ° with equalizer bar suspender 22, permissible Avoid suspender belt to squeeze with the generation of cabin housing and touch friction.

Above-mentioned equalizer bar suspender 22 is made up of trapezoidal hanging beam, shackle and hanging belt, such as Figure 12.

Owing to position of centre of gravity changes, if being continuing with integral hoisting suspender during cabin split lifting, cabin master will be caused Run-off the straight during body lifting, the flange that cabin is connected with top section tower can not keep level, ultimately result in cabin difficulty in place.

It is simulated analyzing by software for this, the hanging belt in cabin integral hoisting suspender is replaced.

Step 6, cabin split

According to split scheme to cabin split it is: cabin main body, electromotor, maintenance crane and top case.

Electromotor and generator support are pulled down from cabin and cased, and electromotor packing crates is forbidden being inverted, and carries out moistureproof dust-proof Measure.The coupling guard removed in cabin and shaft coupling are placed on nacelle rear platform, it is desirable to fixation, must not have and appoint What loosens.

Note: before carrying out electromotor dismounting, the positioner in three directions of electromotor must be installed, and to dismantling full mistake Journey makes a record.

Step 7, residue tower lifting

Residue tower uses 1000t crawler crane and 150t crawler crane to carry out lifting setting, removes 150t crawler crane after having erect Suspender, 1000t crawler crane carries out the installation that hoists.Concrete installation procedure is installed with end section tower.

Prepare before step 8, cabin lifting

Part anti-torsion cable between cabin to tower is fixed in advance on the section atop a tower platform of top before the section tower lifting of top, tower Cylinder attachment bolt and the interim fixation of tower, with tower synchronous hoisting.Top section tower lifting and cabin lifting do not allow interval super Spending 12 hours, end section tower immediately begins to the lifting in cabin after having lifted.Cabin main body and equalizer bar suspender 22 are installed in advance Good.Must fully carry out cabin before the section tower lifting of top and lift corresponding preparation, all Work tools on deck and check Confirming, alignment pin prepares abundance in advance, and the putting position of main hoisting machinery super-starting balance weight has been determined in advance, and super-starting balance weight is pressed in advance Order is put complete.

Step 9, cabin main body lift

2 cabin liftings

1) lifting cabin: 2 cable wind ropes stablizing cabin of bolt, every cable wind rope is held with 4-5 people's (increase and decrease of apparent wind speed). Hang up properly the main slowly lifting cabin of hanging of cabin equalizer bar suspender 22 and, to leaving ground, remove cabin transport support, check yaw spiral shell Pit, it is ensured that screw thread can be screwed into bolt smoothly.Installing go off course lightning protected pawl and alignment pin, position is: 2 o'clock, 6 o'clock, 10 o'clock.Main hanging continues to hook up, and controls direction, cabin by pulling cable wind rope, slowly promote cabin from upwind in lifting.Lifting Time note adjust cabin balance, control engine opening towards crane arm, it is ensured that follow-up impeller lifting time can just to cabin lift.

2) cabin is in place: after cabin is lifted to setting height(from bottom), and crane revolution makes cabin be in above the section tower drum flange of top, makes two Flange face is slow off the hook after substantially aligning, and slowly puts down cabin after being alignd with tower upper bolt hole by cabin coupling bolt hole, from Stopping during section tower drum flange about 50, top, insert tower and cabin attachment bolt, main the hanging of commander continues to put down cabin, first uses machine The alignment pin installed on cabin locates, and then 5 bolts are respectively installed at 4 angles, after tightening slowly by cabin off the hook until two Individual flange completely attaches to, and now crane keeps the load of 30%, regulates cabin according to field condition, pulls down alignment pin.With electronic Spanner is by being gradually lowered crane load, pre-fastening moment 1000N m after cross bolt complete to horn cupping pretension.Cabin and top section tower During docking, cabin afterbody first falls in tower, reduces suspension hook after installing part bolt again, and front portion, cabin just falls in tower, must Before cabin lifts, install alignment pin, and get out pipe wrench dismounting alignment pin.

Cabin is with the fastening pushing up section tower attachment bolt: after the tight complete all bolts of electric wrench, it is necessary to fasten in strict accordance with bolt Torque requirement, presses cross to horn cupping fastening top section tower and cabin attachment bolt, for the first time 1900N at twice with hydraulic torque spanner M, for the second time 3800N m.After having fastened, commander is main hangs off the hook, removes cabin suspender rigging and is fallen earthward by suspender rigging.

Step 10, the lifting of split parts and assembling

1 electromotor lifting

Electromotor and generator support had been pulled down and be placed in packing crates before cabin main body lifts.Cabin main hanger installs into After, immediately electromotor and generator support should be lifted and install to cabin.

1) after installing suspender on electromotor hanger, start main crane, from the slow lifting hook of upwind, check that suspender is No properly: after lifting, generator support side mounting plane should be vertical, otherwise should put down electromotor and readjust lifting rope length, Make generator support side mounting plane after slinging vertical, in order to install with mainframe.

2) electromotor that continues to sling, to when exceeding nacelle top, adjusts generator position so that putting into cabin smoothly, And mounted positioner carries out electromotor thick centering installation before utilizing electromotor dismounting.

3) cleaning generator support side mounting plane, makes generator support side fit with main support trailing flank.According to bolt Connection request installs connecting bolt, nut and lengthening set, with hydraulic pressure support wrench successively fastening nut.

2 shaft couplings and the installation of coupling guard

Shaft coupling is broadly divided into 4 parts, the brake disc of gear box side band diaphragm group, intermediate, generator side band diaphragm group flange And swelling device.

1) brake disc of shaft coupling gear box side band diaphragm group is installed on gear-box in advance, and electromotor leaves after installing thick centering Begin to install shaft coupling generator side diaphragm group, cleaning swelling device bore area and electromotor spindle nose, by the flange of band diaphragm group and Swelling device pushes electromotor spindle nose, adjusts installation dimension and ensures that brake disc surface and swelling device flange surface distance meet requirement. Uniformly tighten bolt on swelling device, the most urgent moment.

2) cleaning intermediate and the installed surface of diaphragm group, degreasing, rotate gear box side assembly and generator side assembly, make two Bolt is installed in the diaphragm group of limit be aligned on the same line, loads connecting bolt, load intermediate, tighten by hand installation bolt and Nut, allows moment limiting device in electromotor side.Cinch bolts all on locking nut are unclamped, it is ensured that bolt head does not exposes Swelling nut, hands tighten locking nut until diaphragm between very close to each other, locking nut is unscrewed 1/4 circle.The manual intersection tightens 4 cinch bolts of crossing distribution, intersect after tightening these 4 cinch bolts, more uniformly tighten all cinch bolts. Finally repeatedly twist all cinch bolts with torque spanner 2 times again.

Installation process utilize coaxiality detector detect, it is ensured that shaft coupling installation accuracy meets the technical standards.

3) coupling guard divides base, bearing and circular seat.Base is bolted on generator support, then is used by bearing It is bolted on base, finally cover body is assembled on bearing successively, utilize bolt to fasten.Note front shroud and brake disc Before and after gap want uniformly.

3-dimensional repaiies crane lifting

Use main hoisting machinery to be sling above cabin by maintenance crane, be placed on track after adjusting position.

Note: the drag chain of driving side is towards cabin afterbody；Both sides drive gear to align with track tooth, prepare power line (band in advance Five hole industrial sockets), energizing test before the case of lifting top.

4 top cases are installed

Top case connects suspender, notes adjusting bottom surface level after starting crane, in order to be connected with nacelle cover.Continue to hang When playing top case extremely beyond nacelle top, adjust lift hook position and make top case be directed at engine room cover, slowly fall suspension hook, make Top case with and engine room cover fit, screw up with a wrench connecting bolt.Lift after bolt in place tightens, on engine room inside edge Case joint filling with sealant.

Step 11, impeller combine

1 mechanical arrangements

Use 1000t crawler crane and 150t crawler crane to double-click during impeller combination and lift blade.

2 impeller combinations

1) anterior crane suspender belt at blade L=1.5m through, rear portion crane suspender belt at L=35.5m through, hang at rear portion The position that car suspender belt passes, on pad, the protection board of front and rear edge is with support blade.

2) keeping blade level, two cranes lift and blade are raised to suitable height, remove blade root support and blade tip support.

3) blade is lifted slowly to wheel hub, first use electric wrench pretension bolt.Group to complete blade at this blade 35.5m Position, hangs with whipline pocket, it is to avoid blade is installed tailheaviness deviation and caused wheel hub rollover and blade afterbody to land.By above-mentioned step Rapid assembling second, the 3rd blade.

4) for preventing blade rotation from special blade locking device must be used to be locked by blade after blade has combined.

Step 12, impeller lift

With lifting impeller after impeller locking bed 3 locking-blade 5, it is to avoid when impeller is sling, blade rotates.Main and auxiliary crane is in place, The suspender of main crane is 2 flat sling compositions, suspender belt distance vane rain-retaining plate about 1m.Auxiliary crane suspender only with a suspender belt, Available blade circular hoisting belt.Trailing edge must add V-type backplate, lays felt, prevent from causing to trailing edge in backplate Extrusion damage.Cable wind rope on auxiliary suspender belt root bolt is so that impeller removes auxiliary suspender belt the most afterwards.First hub bracket connection is removed Connecting bolt, the most major-minor crane lifts by crane simultaneously, and lifting impeller is until wheel hub leaves ground 1.5m, cleaning docking bolt hole, flange Face, installs wheel hub and cabin main shaft attachment bolt.

Installing three correcting rods 41 with rear-wheel hub 4 flange face, such as Figure 13 and Figure 14, position is 2 o'clock, 6 o'clock, 10 points Clock.Main hanging slowly hooks up, and the slow off the hook of Aided Machine keeps blade tip to be consistently higher than ground 0.5m, makes impeller from lifting state progressively Become upright state, remove auxiliary sling when whipline does not carries, adjust impeller upright position and make wheel hub 4 flange face and water Plane becomes 85 °, and tension cable wind rope keeps impeller central slowly to dock impeller and cabin with after main axis parallel.After impeller is vertical, Three blades should be at " Y " font, and blade controls guard leading end away from root of blade distance 38m, cable wind rope diameter 30mm, Low tensile fracture >=30kN, length 300m.5MW fan blade length 62m, impeller diameter 128m, for leading of impeller To, prevent impeller from colliding with tower and damaging, enough workmens need to be arranged to coordinate the rolling of every cable wind rope.

When wheelboss flange is close to cabin flange, master hangs necessary slow in one's movements, can unclamp cabin stop pin, by cabin main shaft jiggering Adjust so that aligning bolt hole.Impeller is pre-to horn cupping by cross first by electric wrench after all penetrating with cabin attachment bolt Tightly, pre-fastening moment 1000N m.Then hydraulic spanner is used by cross, horn cupping to be fastened to regulation moment values in three times, for the first time 2400N m, for the second time 3300N m, for the third time 4700N m.

After impeller installs, remove impeller suspender, blade tip protective jacket and cable wind rope, impeller slowly rotated so that it is in a leaf Sheet blade tip direction straight down, uses bolt tensioning jack to stretch this blade bolt to fastening force 310kN.Same method, eventually tight its Yu two blade bolts to fastening force 310kN.After impeller has lifted, three blades all become oar to feather position, dismounting blade Locking device.

According to traditional Integral Lifting Technology, then the hoisting machinery specification needed for the lifting of 5MW wind power generating set is 1600t Level, and after using split type hoisting technology, required hoisting machinery specification is reduced to 1000t level.

By rational split, by the 1000t level hoisting machinery rate of load condensate when 5MW wind power generating set split lifts by 97% It is reduced to 87.6%, it is ensured that the Hoisting Security of this rank wind power generating set.

Following table is that produced by two kinds of hoisting technologies of 5MW wind power generating set, machinery use cost compares (unit: ten thousand yuan)

Table in analysis is it can be seen that use the split type hoisting technology can be by the machinery of separate unit 5MW wind power generating set hoisting engineering Use cost reduces by 620,000 yuan, and its economic benefit is obvious, and the market competitiveness is big.

Select the hoisting machinery of low specification after wind power generating set split, reduce hoisting machinery to operating area foundation strength, field Vegetation protection, environmental protection and energy saving are had certain positive role by the requirement of the aspects such as ground size, it is ensured that the safety of lifting simultaneously.

Embodiment described above is only to be described the preferred embodiment of the present invention, not carries out the scope of the present invention Limit, on the premise of designing spirit without departing from the present invention, relevant technical staff in the field to the various deformation of the present invention and improvement, All should expand in protection domain as determined by claims of the present invention.

Claims

The split type hanging method of 1.5MW land counterpart wind power generating set, it is characterised in that:

Step one, preparing main arrangement for crane machinery is 1000t crawler crane, and auxiliary arrangement for crane machinery is 150t crawler crane；Tower, cabin, Wheel hub, blade are marched into the arena to unload by planned position and are put, and equipment is put principle and is:

1) six sections of tower be placed sequentially in around main crane and allow the upper flange of tower towards main crane or away from foundation ring direction, And within six sections of tower are arranged in the main crane lifting radius of clean-up；

2) cabin is placed in against blower foundation ring position, and within main crane revolution range；

Step 2, end section tower lifts

1 lifting preparation:

1) installation dimension of end section tower drum flange should be in the range of location tolerance, ovality≤2mm, uses ovality detector multiple Survey, as undesirable needs correct before lifting；

2) check, clear up inside flange face, bolt hole, end section tower；

3) complete end section tower cable laying before lifting and tower is electrically installed；

4) bearing plate flange face horizontal error is checked: measuring the horizontal absolute altitude of eight symmetrical points, absolute altitude deviation≤3mm is Qualified；And in backing plate flange bolt, a circle fluid sealant is respectively smeared in outside before end section tower is installed；

2 liftings are erect

1) hanger is installed and rigging is tied

500t truck crane and 150t crawler crane double-machine lifting crane are selected in section tower lifting in the end, install tower Special lifting lug at hoisting point position And it is tied hoisting appliance, wherein, upper flange surface installs four according to 1 thirty, 4 thirty, 7 thirty, four positions, 10 thirty Hanger (11), uses the lifting of 500t truck crane, and lower flange, by 1 thirty, two hangers of position installation 10 thirty, uses 150t Crawler crane lifts by crane；

2) double-machine lifting crane and complete end section tower erect

3) end section tower installation in place

150t crawler crane bull stick is to directly over foundation ring, and off the hook contacts to section tower lower flange face, the end with foundation ring flange face, peace After filling all fastening bolts connection pair, slowly let-down tower, 500t truck crane keeps 30% load, pretension bolt, fastens complete After, 150t crawler crane machinery off the hook does not stresses to rigging, removes section tower top, end hanger；

4) end section tower bolt tension

End section tower has lifted rear fan basis and has used high intensity contraction-free grouting concrete that backing plate flange is carried out back-grouting, and presses Bolt, to qualified intensity, is finally stretched by regulation maintenance；

5) installation of end section tower internal control cabinet；

Step 3, in, top tower lifting

1 lifting preparation lifts with end section tower, and also includes respectively smearing outside in installing the upper flange bolt hole of tower One circle fluid sealant by all nut shims to be installed on deck；

2 select 150t crawler crane and 1000t crawler crane double-machine lifting crane, and hanger is installed, rigging is tied and wants with double-machine lifting crane technique Seek common ground end section tower；

By 1000t crawler crane tower of slinging to above the upper surface flange of next joint tower, before the contact of two flange faces, put on Alignment pin locates, and installs bolt from the bottom up in each alignment pin both sides, after installing the 1/3 of sum, again lowers suspension hook extremely Two flange faces completely attach to, and remove alignment pin, have installed all bolts of residue, and then crane load is down to 30%, by cross Horn cupping is completed tower attachment bolt first tightly, pre-fastening moment 1000N m, re-use hydraulic torque spanner and divide three by regulation moment Secondary completing the eventually tight of tower attachment bolt, three times Tightening moment value is respectively 50%, 75%, the 100% of bolt clamp force at end square；

When tower is installed, as occurred, tower drum flange deforms, it is impossible to penetrate all bolts, and blunderbuss head need to be used to carry out the rectification of flange, Antidote is: cannot penetrate insertion blunderbuss head at the bolt hole of bolt, and enter with hammer so that the flange of deformation is fitted Answering property deforms；

3 top section tower liftings

Described top section tower is the tip portion of top tower, is carried by the part anti-torsion cable between the section tower of cabin to top before lifting Before be fixed on top section atop a tower platform on, top section tower attachment bolt with top the interim fixation of section tower, with top section tower with Step lifting, hanger is installed, rigging is tied with double-machine lifting crane technological requirement with end section tower；

Step 4, determine cabin split scheme

It is cabin main body, electromotor, maintenance crane and four parts of top case by cabin split；

Step 5, center of gravity calculation and suspender select

Software analysis calculates, and determines the position of centre of gravity of residue cabin main body；

Equalizer bar suspender is selected in cabin main body lifting, and described equalizer bar suspender is by four suspension centre lifting cabin main bodys, it is ensured that cabin Balance in main hanger process of assembling；

Step 6, cabin split

At the circumferential mounting and positioning device of electromotor, and dismounting overall process is made a record, by electromotor and generator support from machine Pulling down in cabin and case, the coupling guard removed in cabin and shaft coupling are placed in and are fixed on nacelle rear platform；

Step 7, cabin main body lift

1 cabin main body lifting

1) lifting cabin main body: two cable wind ropes stablizing cabin main body of bolt, installs alignment pin, hangs up properly cabin main body Equalizer bar suspender, main crane slowly lifts by crane cabin main body to leaving ground, removes cabin main body transport support, checks yaw Screwed hole, main crane continues to hook up, and controls cabin main direction by pulling cable wind rope, slowly promote cabin from upwind in lifting Main body, controls cabin main body mouth towards crane arm；

2) cabin main body is in place: after cabin main body is lifted to setting height(from bottom), and the revolution of main crane makes cabin main body be in top section tower Above flange, after being alignd with tower upper bolt hole by cabin main body coupling bolt hole, slowly put down cabin main body, from top section tower Stopping during flange 50, first locate with the alignment pin installed in the main body of cabin, then five bolts are respectively installed at four angles, Slowly cabin main body off the hook is completely attached to until two flanges after tightening, regulation cabin main body, pull down alignment pin, pull with electronic Hands, by being gradually lowered crane load after cross bolt complete to horn cupping pretension, finally presses cross to horn cupping with hydraulic torque spanner at twice Fastening top section tower and cabin main body attachment bolt, main crane off the hook, remove cabin main body suspender rigging；

Step 8, the lifting of split parts and assembling

Sling successively electromotor, maintenance crane, anterior overhead guard and middle part overhead guard to cabin main body and assembles；

Step 9, impeller combine

Blade is lifted slowly to wheel hub by main crane and the cooperation of auxiliary crane, uses to complete blade group in this blade 35.5m position Auxiliary crane pocket hangs, and installs special blade locking device on wheel hub by blade locking；

Step 10, impeller lift

Main and auxiliary crane is in place, and the suspender of main crane is 2 flat sling compositions, suspender belt distance vane rain-retaining plate 1m；Auxiliary hang Car suspender is a suspender belt, and trailing edge adds V-type backplate, lays felt, on the suspender belt root bolt of auxiliary crane suspender in backplate Cable wind rope is so that impeller removes the suspender belt of auxiliary crane suspender the most afterwards, and main and auxiliary crane lifts by crane simultaneously, and lifting impeller is until wheel hub Leave ground 1.5m, cleaning docking bolt hole, flange face, wheel hub and cabin main shaft attachment bolt are installed, then at wheelboss flange Three correcting rods are installed in face, and position is 2 o'clock, 6 o'clock, 10 o'clock, keep blade tip to be consistently higher than ground 0.5m, make impeller Progressively become upright state from lifting state, remove auxiliary crane suspender when auxiliary crane does not carries, then adjust impeller upright position Making wheelboss flange face with the horizontal 85 °, tension cable wind rope keeps impeller central slowly to dock impeller and cabin with after main axis parallel, After impeller is vertical, three blades should be at " Y " font；

When wheelboss flange is close to cabin flange, main crane is slow in one's movements, unclamps cabin stop pin, is adjusted by cabin main shaft jiggering So that aligning bolt hole, impeller and cabin attachment bolt all penetrate after first by electric wrench by cross to horn cupping pretension, Then hydraulic spanner is used by cross, horn cupping to be fastened to regulation moment values in three times；

After impeller installs, remove impeller suspender, blade tip protective jacket and cable wind rope, impeller slowly rotated so that it is in a leaf Sheet blade tip direction straight down, uses bolt tensioning jack to stretch this blade bolt；Three blades all become oar to feather position, dismounting Blade locking device, completes lifting.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that Section tower bolt tension of the described end must be carried out after back-grouting reaches qualified intensity, and end section tower lower flange Internal and external cycle bolt is each It it is 96, it is adaptable to being all arranged symmetrically with by 120 ° of interval inside and outside 6 stretchers and stretch simultaneously, pretightning force 730kN, bolt divides Three stretchings, are no less than 30 minutes each interval time, and three times tensile force is respectively 50%, 75%, the 100% of bolt clamp force at end.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that Also including that before cabin main body is lifted by crane one is installed go off course lightning protected pawl and the sub-step of alignment pin, installation site is: 2 o'clock, 6 o'clock, 10 o'clock.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that institute State hoisting appliance to be made up of hanger shackle, steel wire rope, coaster and suspender belt.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that Described equalizer bar suspender is made up of trapezoidal hanging beam, shackle and hanging belt, and described trapezoidal hanging beam is below by four vertically arranged hanging Dress band (21) is connected with cabin main body suspension centre, is hung on main arrangement for crane machinery suspension hook above with four hanging belt (21 ') bolts.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that send out Motor winches to after in the main body of cabin first by coaxiality detector centering axiality, and centering is complete fastens shaft coupling by regulation moment Attachment bolt.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that In step 9, detailed process is:

1) 1000t crawler crane suspender belt at blade L=1.5m through, 150t crawler crane suspender belt at L=35.5m through, The position that 150t crawler crane suspender belt passes, on pad, the protection board of front and rear edge is with support blade；

2) keeping blade level, two cranes lift and blade are raised to suitable height, remove blade root support and blade tip support,

3) being lifted by blade slowly to wheel hub, first with the bolt of electric wrench pretension wheel hub with blade junction, group is to complete Blade, in this blade 35.5m position, hangs with whipline pocket, it is to avoid blade is installed tailheaviness deviation and caused wheel hub rollover and blade Afterbody lands, and assembles second, the 3rd blade by above-mentioned steps.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that In step 8, the concrete hoisting process of electromotor is:

1) after installing suspender on electromotor hanger, start main crane, from the slow lifting hook of upwind, check that suspender is No properly: after lifting, generator support side mounting plane should be vertical, otherwise should put down electromotor and readjust lifting rope length, Make generator support side mounting plane after slinging vertical；

2) electromotor that continues to sling, to when exceeding cabin body top, adjusts generator position so that putting into cabin master smoothly Internal, and utilize electromotor dismounting before mounted positioner carry out the thick centering of electromotor install；

3) cleaning generator support side mounting plane, makes generator support side fit with main support trailing flank, props up with hydraulic pressure Fagging hands fastening nut successively；

4), after generator support installation, the generator cable of top section tower barrel platform will be placed on according to generator terminal figure even Receive on the stator terminal of electromotor, rotor-end and earth terminal.
The 5MW split type hanging method of land counterpart wind power generating set the most according to claim 1, it is characterised in that In step 8, the detailed process of shaft coupling is:

1) brake disc of shaft coupling gear box side band diaphragm group is installed on gear-box in advance, and electromotor leaves after installing thick centering Begin to install shaft coupling, and the flange of the band diaphragm group of electromotor, cleaning swelling device bore area and electromotor spindle nose, will carry The flange of diaphragm group and swelling device push electromotor spindle nose, adjust installation dimension ensure brake disc surface and swelling device respectively with Flange surface distance meets requirement, and uniformly tightens bolt on swelling device, the most urgent moment；

2) cleaning intermediate and the installed surface of diaphragm group, degreasing, rotate gear box side assembly and generator side assembly, make two In the diaphragm group of limit, bolt is aligned on the same line, loads bolt, loads intermediate, tights a bolt and locking nut by hand, allows Bolts all on locking nut, in electromotor side, are unclamped, it is ensured that bolt head does not expose locking nut, hands by moment limiting device Tightening locking nut until very close to each other between diaphragm, locking nut unscrews 1/4 circle, the manual intersection tightens crossing distribution Four bolts, intersect after tightening these four bolts, more uniformly tighten all bolts, repeatedly twist with torque spanner Twice of all bolts.