CN105887789B - A kind of spud leg pitching pile technique of heavy lifting mechanism - Google Patents
A kind of spud leg pitching pile technique of heavy lifting mechanism Download PDFInfo
- Publication number
- CN105887789B CN105887789B CN201610440675.7A CN201610440675A CN105887789B CN 105887789 B CN105887789 B CN 105887789B CN 201610440675 A CN201610440675 A CN 201610440675A CN 105887789 B CN105887789 B CN 105887789B
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- spud leg
- hook
- lifting mechanism
- steel wire
- gib head
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The present invention relates to a kind of spud leg pitching pile technique of heavy lifting mechanism, prepares：Turning tool and two groups of movable moulding beds are put in straight line；Spud leg shifts：Shifted using crane barge main hook double hook, make suspension centre at two three partial nodes with spud leg leg on request, first hang one end suspension centre, then hang another suspension centre；Spud leg turns over：The small hook of crane barge is stopped to spud leg hanger to be turned over, installation lifting steel wire rope, loose hook carry out auxiliary using caprone cable and connect lifting steel wire rope on small hook in advance, the advantage of the invention is that：Solve the problems, such as short time limit, ensure that pitching pile and transhipment required precision, ensure the installation requirement of the spud leg of heavy lifting mechanism, realize single hook pitching pile.
Description
Technical field
The present invention relates to a kind of heavy exposed gear rack-driving technical field, more particularly to a kind of heavy lifting mechanism
Spud leg pitching pile technique.
Background technology
The lifting mechanism of jackstone leveling ship and self-elevating drilling platform belongs to heavy exposed gear rack-driving structure.According to
The spud leg requirement of self-elevating drilling platform, the number of the annual plug/unplug stake of platform must not exceed 5 times；And lifting mechanism operation is frequent,
Rack-and-pinion is chronically at low speed, heavy duty, impact operating mode, the abrasion of frequent high load capacity plug stake operation accelerating gear rack；Through
Detection is crossed, the attrition value of local spud leg rack alreadys exceed design permissible value, and spud leg tooth surface of rack measures greatest wear amount and is about
6.5mm (maximum allowable 6mm), tooth top greatest wear amount reach 15mm (maximum allowable 5mm), for the loss situation of spud leg, more
It is imperative to change maintenance spud leg, but the length of spud leg is grown, and turns over and pitching pile is all extremely difficult.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of spud leg pitching pile technique of effective and feasible heavy lifting mechanism.
In order to solve the above technical problems, the technical scheme is that：A kind of spud leg pitching pile work of heavy lifting mechanism
Skill, its innovative point are：The spud leg is in a tubular structure being vertically arranged, including the rack at middle part and is installed on rack two
The string pipe of side, its head on both sides are as follows with a pair of hangers for being easy to lifting, the pitching pile technique of the spud leg：
（1）Prepare：Turning tool and two groups of movable moulding beds are put in straight line, sleeper is arranged on turning tool
And hardwood, crane barge steel loading cord of hanging oneself is installed in place in advance；Locking device on heavy lifting mechanism unclamps, locking device pine
Open, lifting mechanism is powered, and adjusts the climbing gear tooth top of lifting mechanism from the horizontal by 26 degree of angle, prevents to climb
Gear teeth tips are from the horizontal by 5 degree of angle phenomenon；
（2）Spud leg shifts：Shifted using crane barge main hook double hook, crane barge includes two main hooks of main hook A and main hook B, and thing
First installation shifts steel wire rope respectively on main hook；Make suspension centre at two three partial nodes with spud leg leg on request, first hang one
Suspension centre is held, main hook A is put down, hardwood is placed into spud leg decentralization rack both sides using forklift, and is withstood with forklift, by 2 bundles
Prick steel wire rope to carry out pushing down sleeper, catch spud leg, shackle between the displacement steel wire rope and binding steel wire rope on crane barge is installed in place.
Main hook A is slowly tightened up, and main hook B steel wire rope installment work is completed by above step；Double hook slowly lifts by crane simultaneously；Remove under spud leg
The transporting tire frame of side；Mobile crane barge, displacement spud leg is carried out, spud leg is displaced to above spud leg, and two gib heads are simultaneously loose, and pine is to from turn
At the high 100mm of frock, turning tool side gib head is first loose, and until spud leg bottom, rack withstands turning tool arc plate, spud leg bottom
Gib head pine hook, the slow loose hook of gib head, is placed on movable moulding bed, displacement in place, loose hook, releases steel wire rope and shackle at the top of spud leg；
（3）Spud leg turns over：The small hook of crane barge is stopped to spud leg hanger to be turned over, in advance the installation lifting steel on small hook
Cord, loose hook carry out auxiliary using caprone cable and connect lifting steel wire rope, and lifting steel wire rope is installed in place, gib head slowly stress, hook
When stress is spud leg gross weight 50% ~ 60% on head, one grade slowly rises hook, while crane barge slowly moves toward spud leg root direction.Spud leg
Bottom slowly stress, supervises state of the spud leg on turning tool at any time, need to ensure small hook gib head and horizontal spud leg during turn
Vertically, small hook gib head and spud leg general assembly hanger ensure point-blank, to prevent spud leg from occurring rolling out turning tool, spud leg is slowly
When turning over to 80 degree, stress is more than the 75% of spud leg gross weight on gib head, and turn shape of the moment supervision spud leg on turning tool
State, avoid the occurrence of sideslip phenomenon；Spud leg is turned over to after 90 degree, and crane barge sidesway stops, rising hook stopping, stopping 10 minutes and checks whether
There is exception, gib head slowly rises hook, until hanging turning tool；
（4）Spud leg pitching pile：Mobile crane barge, spud leg is moved at the top of specified lifting mechanism, 500mm high from lifting mechanism platform
Place, mouth under spud leg is finely tuned, gib head is slowly loose, is adjusted using chain block and ensures that spud leg rack passes the guide plate of gear rack；Gib head is slow
Slow pine；Lifting mechanism is suitable for reading to be kept an eye on by special messenger, need to be adjusted in place in time if any deviation；Lifting mechanism powers off, and spud leg slowly leads to
First pin gear is crossed, one grade of loose hook, keeps a value of the gib head number of degrees in the 60% ~ 65% of spud leg gross weight constant, takes quarter
The situation that concern spud leg passes through guide plate；After the insertion lifting mechanism 20m of spud leg lower end, crane barge stops；Lifting mechanism is powered, and will lift
Rise mechanism locking, locking device locking；Gib head slowly loose hook；Cage is lived using crane barge lockset hook block, people station is carried out in cage
Lifting steel wire rope is unbinded, hanger is coated after the completion of dismounting and is painted in fray, carries out lifting experiment.
Further, the turning tool includes bottom mounting seat, deck, cushion block；The mounting seat lies in a horizontal plane in ground
On face, from front to back successively close to cushion block and deck is provided with its top end face, the deck upper end is indent circular arc
Neck, planes align in the minimum point and cushion block of the neck.
The advantage of the invention is that：Solve the problems, such as short time limit, ensure that pitching pile and transhipment required precision, ensure heavy lift
The installation requirement of the spud leg of mechanism is risen, realizes single hook pitching pile.
Brief description of the drawings
Fig. 1 is that a kind of spud leg of the spud leg pitching pile technique of heavy lifting mechanism of the present invention shifts schematic diagram.
Fig. 2 is a kind of turning tool schematic diagram of the spud leg pitching pile technique of heavy lifting mechanism of the present invention.
Embodiment
The invention discloses a kind of spud leg pitching pile technique of heavy lifting mechanism, solves spud leg pitching pile difficulty, turns over and be stranded
Difficult problem, below by taking jackstone leveling ship as an example, present disclosure is described in detail.
The lifting mechanism of jackstone leveling ship belongs to heavy exposed gear rack-driving structure, with self-elevating drilling platform class
Seemingly.According to the spud leg requirement of self-elevating drilling platform, the number of the annual plug/unplug stake of platform must not exceed 5 times；And the lift of leveling ship
It is frequent to rise mechanism operation, often saving leveling ship in tube coupling construction just needs plug/unplug stake at least 8 times, plugs stake every year on average more than 80
It is secondary.
Leveling ship operation marine site complex geologic conditions, plug stake operating mode it is severe, rack-and-pinion be chronically at low speed, heavy duty,
Impact operating mode, the abrasion of frequent high load capacity plug stake operation accelerating gear rack；The attrition value of local spud leg rack alreadys exceed
Permissible value is designed, it is about 6.5mm (maximum allowable 6mm) that spud leg tooth surface of rack, which measures greatest wear amount, and tooth top greatest wear amount reaches
To 15mm (maximum allowable 5mm)；
Jackstone leveling ship lifting is filled to be made up of 4 spud legs and 32 gear devices, and the device is leveling ship core
One of equipment.Wherein spud leg length be 90 meters, drum diameter be 2.8 meters（A diameter of 3.6 meters plus rack）, single weight 470
Ton.The pitching pile technique of the spud leg is as follows：
（1）Prepare：Behind barge towage to spud leg general assembly region, by jackstone leveling ship towage in place, docking at no water wave
Region, has thrown anchor, is needed between barge and jackstone leveling ship with good hawser, and band cable, which tenses, avoids stone dumper from rocking, and unbinds processing（Cut off
Colligation strut, the weld seam for cutting off transporting tire frame and deck and card code）.
Turning tool on barge is installed in place, ensures turning tool lower railway beam and barge deck cage bar pair during installation
Muscle, in addition two groups of movable moulding beds put on request in place.Ensure turning tool with movable moulding bed point-blank.Turning over work
Load onto and arrange sleeper（Bottom surface uses 120*120-1.5m sleeper）And hardwood（Top surface uses 300*300-1.5m hardwood）
Such as sleeper certainly will be caused to squish using sleeper, 250T pressure when can not support the spud leg to turn over.Movable moulding bed opens up when making
130*130 notch, and arrange in notch 120*120-1.5m anti-skidding sleeper；As shown in figure 1, turning tool includes bottom
Portion's mounting seat 4, deck 7, cushion block 5；Mounting seat 4 is horizontal positioned on the ground, from front to back successively close to peace on its top end face
Equipped with cushion block 5 and deck 7, the upper end of deck 7 is indent circular arc neck, minimum point and the planes align on cushion block 5 of the neck.
As shown in Fig. 2 4000T crane barges steel loading cord 2 of hanging oneself is installed in place in advance.Spud leg displacement is double using crane barge main hook
Hook shifts, and main hook A carries out doubling hook in place using 144*20m steel wire rope loop.Spud leg lifting is using the small hook block dress of crane barge.It is small
Hook is linked up with using 144*20m steel wire rope loop, and installs steel wire loop in steel wire rope loop lower end（Prevent from grinding when spud leg from turning over
Steel wire rope is damaged, facilitates high-altitude to solve steel wire rope）, and butter is spread on steel wire loop（Rubbed in view of steel wire loop and lifting hanger
It is big to wipe power, difficulty is turned in increase, and aunt spreads butter）.
By on jackstone leveling ship, locking device unclamps, and lifting mechanism is powered, adjust the climbing gear tooth top of lifting mechanism with
Horizontal direction prevents climbing gear tooth top occur from the horizontal by 5 degree of angle phenomenon, short electric treatment into 26 degree of angle.
（2）Spud leg shifts：As shown in Fig. 2 on request toward at each 15m in both ends at the spud leg center line 45m（Spud leg is complete
Long 90m）Make suspension centre, first hang one end suspension centre, main hook A is put down, 300*300-1.5m hardwood is placed into spud leg using forklift
Two rack bar sides are transferred, factory's roof is lived（In view of forklift, relieving length is effective, and scene, which using existing clout make, lengthens shovel
Tooth set）, 2 85*20m steel wire rope is carried out to push down sleeper, catches spud leg, by 85*20m steel wire rope and 144*20m steel
200T shackles are installed in place between cord.Main hook A is slowly tightened up, and main hook B steel wire rope installment work is completed by above step.Double hook
Slowly lift by crane simultaneously.The transporting tire frame below spud leg is removed, arranges the movable moulding bed of turn.
Mobile crane barge, carry out shifting spud leg 3, spud leg 3 is displaced to barge top, and two gib heads are simultaneously loose, and pine is to from turn work
Fill at high 100mm, turning tool side gib head is first loose, until the bottom rack of spud leg 3 withstands turning tool arc plate, the bottom of spud leg 3
Gib head pine hook, the slow loose hook of the top gib head of spud leg 3, place on movable moulding bed, displacement is in place.Loose hook, release steel wire rope and shackle.
Repair paint processing.Aeronautical light at the top of spud leg is installed.
（3）Spud leg turns over：The small hook of 4000T crane barges is stopped to spud leg hanger to be turned over, loose hook is entered using caprone cable
Row auxiliary connects 144*20m steel wire ropes, and steel wire rope is installed in place, gib head slowly stress, and stress 260t or so on gib head, one grade slow
Crane barge slowly moves slow liter hook toward spud leg root direction simultaneously.Spud leg bottom slowly stress, spud leg is supervised at any time in turning tool
On state, need to ensure that small hook gib head is vertical with horizontal spud leg, small hook gib head and spud leg general assembly hanger ensures one during turn
On bar straight line, prevent spud leg from occurring rolling out turning tool.
When spud leg is slowly turned over to 80 degree, spud leg bottom is turned over by the step of turning tool one and transitted on another step, hook
Stress supervises turn state of the spud leg on turning tool in more than 350T, and moment on head, avoids the occurrence of sideslip phenomenon.Spud leg
Turning over to after 90 degree, crane barge sidesway stops, rising hook stopping, stopping 10 minutes and has checked whether exception, and gib head slowly rises hook, until
Turning tool is hung, the gib head number of degrees are 470T.
（4）Spud leg pitching pile：Mobile crane barge, spud leg is moved at the top of specified lifting apparatus（500mm high from lifting apparatus platform
Place）, mouth under spud leg is finely tuned, gib head is slowly loose, is adjusted using chain block and ensures that spud leg rack passes the guide plate of gear rack.Gib head is slow
Slow pine.Lifting apparatus is suitable for reading to be kept an eye on by special messenger, need to be adjusted in place in time if any deviation.Lifting mechanism powers off, and spud leg slowly leads to
Cross first pin gear, one grade of loose hook, keep the gib head number of degrees to take and carve situation of the concern spud leg by guide plate in 300T.Stake
After the insertion lifting apparatus 20m of leg lower end, crane barge stops.Lifting mechanism is powered, by lifting mechanism locking, locking device locking.Hook
Head slowly loose hook.
Cage is lived using crane barge lockset hook block, people station carries out inserting lifting steel wire rope in cage, applies and hang oneself after the completion of dismounting
Ear simultaneously paints in fray, carries out lifting experiment.
The general principle and principal character of the present invention has been shown and described above.It should be understood by those skilled in the art that
The present invention is not limited to the above embodiments, merely illustrating the principles of the invention described in above-described embodiment and specification,
Without departing from the spirit and scope, various changes and modifications of the present invention are possible, and these changes and improvements all fall
Enter in scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (2)
- A kind of 1. spud leg pitching pile technique of heavy lifting mechanism, it is characterised in that：The spud leg is in a tubular knot being vertically arranged Structure, including the rack at middle part and the string pipe for being installed on rack two sides, its head on both sides have a pair of hangers for being easy to lifting, The pitching pile technique of the spud leg is as follows：Prepare：Turning tool and two groups of movable moulding beds are put in straight line, sleeper and hardwood are arranged on turning tool, Crane barge steel loading cord of hanging oneself is installed in place in advance；Locking device on heavy lifting mechanism unclamps, and locking device unclamps, lifting Mechanism is powered, and adjusts the climbing gear tooth top of lifting mechanism from the horizontal by 26 degree of angle, prevents climbing gear tooth occur Push up the angle phenomenon from the horizontal by 5 degree；Spud leg shifts：Being shifted using crane barge main hook double hook, crane barge includes two main hooks of main hook A and main hook B, and in advance in main hook The upper displacement steel wire rope of installation respectively；Make suspension centre at two three partial nodes with spud leg leg on request, first hang one end suspension centre, will Main hook A is put down, and hardwood is placed into spud leg decentralization rack both sides using forklift, and is withstood with forklift, and 2 binding steel wire ropes are entered Row pushes down sleeper, catches spud leg, shackle between the displacement steel wire rope and binding steel wire rope on crane barge is installed in place；Main hook A is slowly tightened up, and main hook B steel wire rope installment work is completed by above step；Double hook slowly lifts by crane simultaneously；Remove stake Transporting tire frame below leg；Mobile crane barge, displacement spud leg is carried out, spud leg is displaced to above spud leg, and two gib heads are simultaneously loose, Song Zhili At the high 100mm of turning tool, turning tool side gib head is first loose, and until spud leg bottom, rack withstands turning tool arc plate, spud leg Bottom gib head pine hook, the slow loose hook of gib head, is placed on movable moulding bed, displacement in place, loose hook, releases steel wire rope and unloaded at the top of spud leg Button；Spud leg turns over：The small hook of crane barge is stopped to spud leg hanger to be turned over, in advance installation lifting steel wire rope, pine on small hook Hook carries out auxiliary using caprone cable and connects lifting steel wire rope, and lifting steel wire rope is installed in place, gib head slowly stress, stress on gib head For spud leg gross weight 50% ~ 60% when, one grade slowly rises hook, while crane barge slowly moves toward spud leg root direction；Spud leg bottom slowly stress, supervises state of the spud leg on turning tool at any time, need to ensure during turn small hook gib head with it is horizontal Vertical, small hook gib head and the guarantee of spud leg general assembly hanger to spud leg point-blank prevent spud leg from occurring rolling out turning tool, When spud leg is slowly turned over to 80 degree, stress is more than the 75% of spud leg gross weight on gib head, and moment supervision spud leg is on turning tool Turn state, avoid the occurrence of sideslip phenomenon；Spud leg is turned over to after 90 degree, and crane barge sidesway stops, rising hook stopping, stopping 10 minutes Exception is checked whether, gib head slowly rises hook, until hanging turning tool；Spud leg pitching pile：Mobile crane barge, spud leg is moved at the top of specified lifting mechanism, at 500mm high from lifting mechanism platform, fine setting Mouth under spud leg, gib head is slowly loose, is adjusted using chain block and ensures that spud leg rack passes the guide plate of gear rack；Gib head is slowly loose；Lift Rise that mechanism is suitable for reading to be kept an eye on by special messenger, need to be adjusted in place in time if any deviation；Lifting mechanism powers off, and spud leg slow transits through first Pin gear, one grade of loose hook, keep a value of the gib head number of degrees in the 60% ~ 65% of spud leg gross weight constant, take and carve concern spud leg Pass through the situation of guide plate；After the insertion lifting mechanism 20m of spud leg lower end, crane barge stops；Lifting mechanism is powered, and lifting mechanism is embraced Extremely, locking device is locked；Gib head slowly loose hook；Cage is lived using crane barge lockset hook block, people station carries out unbinding lifting in cage Steel wire rope, hanger is coated after the completion of dismounting and is painted in fray, carries out lifting experiment.
- A kind of 2. spud leg pitching pile technique of heavy lifting mechanism according to claim 1, it is characterised in that：The turn work Dress includes bottom mounting seat, deck, cushion block；The mounting seat is horizontal positioned on the ground, its top end face on from front to back according to Secondary the deck upper end is indent circular arc neck close to being provided with cushion block and deck, in the minimum point and cushion block of the neck Planes align.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610440675.7A CN105887789B (en) | 2016-06-20 | 2016-06-20 | A kind of spud leg pitching pile technique of heavy lifting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610440675.7A CN105887789B (en) | 2016-06-20 | 2016-06-20 | A kind of spud leg pitching pile technique of heavy lifting mechanism |
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| CN105887789A CN105887789A (en) | 2016-08-24 |
| CN105887789B true CN105887789B (en) | 2018-02-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1138455A1 (en) * | 1983-07-20 | 1985-02-07 | Всесоюзный научно-исследовательский и проектно-конструкторский институт по проблемам освоения нефтяных и газовых ресурсов континентального шельфа | Mast-type stationary offshore platform |
| JP4260988B2 (en) * | 1999-07-06 | 2009-04-30 | 大成建設株式会社 | Amphibious work platform |
| CN102720197A (en) * | 2012-07-05 | 2012-10-10 | 南通中远船务工程有限公司 | Method for hoisting pile legs of self-elevating wind turbine installation vessel in turn-over way |
| CN104627898A (en) * | 2013-11-15 | 2015-05-20 | 湖北华舟重工应急装备股份有限公司 | Platform lifting mechanism |
| CN104805814A (en) * | 2014-05-13 | 2015-07-29 | 烟台中集来福士海洋工程有限公司 | Self-elevating platform pile leg mounting method |
| CN204847052U (en) * | 2015-07-20 | 2015-12-09 | 龙口中集来福士海洋工程有限公司 | Spud leg sectionalised transportation frock |
-
2016
- 2016-06-20 CN CN201610440675.7A patent/CN105887789B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1138455A1 (en) * | 1983-07-20 | 1985-02-07 | Всесоюзный научно-исследовательский и проектно-конструкторский институт по проблемам освоения нефтяных и газовых ресурсов континентального шельфа | Mast-type stationary offshore platform |
| JP4260988B2 (en) * | 1999-07-06 | 2009-04-30 | 大成建設株式会社 | Amphibious work platform |
| CN102720197A (en) * | 2012-07-05 | 2012-10-10 | 南通中远船务工程有限公司 | Method for hoisting pile legs of self-elevating wind turbine installation vessel in turn-over way |
| CN104627898A (en) * | 2013-11-15 | 2015-05-20 | 湖北华舟重工应急装备股份有限公司 | Platform lifting mechanism |
| CN104805814A (en) * | 2014-05-13 | 2015-07-29 | 烟台中集来福士海洋工程有限公司 | Self-elevating platform pile leg mounting method |
| CN204847052U (en) * | 2015-07-20 | 2015-12-09 | 龙口中集来福士海洋工程有限公司 | Spud leg sectionalised transportation frock |
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Effective date of registration: 20170524 Address after: The 226000 farm of Jiangsu province Nantong Development Zone Riverview Road No. 1 Applicant after: Nantong Zhenhua Heavy Equipment Manufacturing Co., Ltd. Address before: 226000 Jiangsu Province, Nantong Development Zone, Zhenhua Road No. 1 Applicant before: Shanghai Zhenhua Heavy Industry Group (Nantong) Co., Ltd. |
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