CN113047253A - Multifunctional self-elevating offshore wind power construction platform - Google Patents

Multifunctional self-elevating offshore wind power construction platform Download PDF

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Publication number
CN113047253A
CN113047253A CN202110460205.8A CN202110460205A CN113047253A CN 113047253 A CN113047253 A CN 113047253A CN 202110460205 A CN202110460205 A CN 202110460205A CN 113047253 A CN113047253 A CN 113047253A
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China
Prior art keywords
pile
platform
embracing
arm
main
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Pending
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CN202110460205.8A
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Chinese (zh)
Inventor
周家平
胡灵斌
沈火群
朱亚洲
张耀
刘晓燕
王宏
孔令璋
卓土墙
李原荣
陆子阳
林乌昌
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CCCC Third Harbor Engineering Co Ltd
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CCCC Third Harbor Engineering Co Ltd
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Priority to CN202110460205.8A priority Critical patent/CN113047253A/en
Publication of CN113047253A publication Critical patent/CN113047253A/en
Pending legal-status Critical Current

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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
    • 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
    • E02B17/0809—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering the equipment being hydraulically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • 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
    • E02B2017/0039—Methods for placing the offshore structure
    • 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
    • E02B2017/0056—Platforms with supporting legs
    • 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
    • E02B2017/0091—Offshore structures for wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

The invention discloses a multifunctional self-elevating offshore wind power construction platform which comprises a platform main body, a main crane, an auxiliary crane, four jacket pile foot pile grippers, a single pile gripper, an anchoring system and a generator. The middle and rear parts of the port and starboard of the platform main body are provided with a port groove and a starboard groove which are penetrated through the port and starboard grooves in a one-to-one correspondence and symmetrical manner; an arc groove is arranged in the middle of the stern end of the platform main body, and a left floating platform and a right floating platform extend backwards along the left side and the right side of the arc groove in a one-to-one correspondence manner, so that the left floating platform and the right floating platform form a left gap and a right gap with the stern end face of the platform main body; two jacket pile foot grippers are arranged on the main deck and face the left and right grooves, and the other two jacket pile foot grippers are correspondingly arranged on the left and right floating platforms and face the left and right gaps; the single pile embracing device is arranged at the stern part of the main deck and opposite to the arc groove after two jacket pile foot embracing devices arranged on the left floating platform and the right floating platform are disassembled. The invention can realize six operation functions and has low cost.

Description

Multifunctional self-elevating offshore wind power construction platform
Technical Field
The invention relates to a multifunctional self-elevating offshore wind power construction platform.
Background
The existing offshore wind power installation ship is generally large, the total tonnage is heavy, a complex hydraulic system, a large number of hydraulic pipelines and powerful hydraulic cylinders or a rack lifting mechanism with high fault need to be configured, the use cost is high, the function is single, the existing offshore wind power installation ship is mainly used as a fan installation construction platform and a single pile stable pile platform, the ship width far exceeds the maximum center distance of pile feet of a jacket due to the fact that main decks of platform main bodies are connected, and a jacket pile foot embracing pile device is not installed, so that the existing offshore wind power installation ship does not have a jacket positioning construction function. At present, the foundation construction of a jacket mainly adopts a floating platform for operation, and the floating platform has the following problems:
firstly, the influence of wind, wave and flow is large, and the number of operable days is far less than that of a fixed pile-stabilizing platform.
Secondly, the cost is high, the floating pile-stabilizing platform needs to be constructed by matching a large crane ship, a floating platform, an anchor boat, a traffic ship and the like, wherein the lease expense of the large crane ship is particularly high.
Thirdly, the construction operation procedure is complex, the period is long, multiple ship transfer is needed by adopting floating platform operation, pile sinking construction of the pile foot of only one jacket can be completed by each ship transfer, and multiple ship transfer positioning construction of the pile feet of three or four jackets is needed; due to the fact that the total ton of the large crane ship is large, the anchoring system is complex, the anchoring mooring rope is long, the anchoring quantity is large, the anchoring weight is large, a large amount of time is consumed for ship moving, and the construction efficiency is greatly reduced.
And fourthly, floating platforms need to be manufactured independently, each offshore wind power project needs to be manufactured with a plurality of floating platforms to be matched with different foundation constructions, the cost of the project is greatly increased, the pile foot center distance of each project jacket is different, the floating platforms are difficult to realize reuse, and the problem of resource waste exists.
Fifthly, the current offshore construction method of the pile stabilizing platform comprises the following steps: firstly, a pile stabilizing platform with the weight of 1000t and four platform pile legs are placed on a barge deck and transported to an offshore construction site, then a large-scale crane ship is used for hoisting the pile stabilizing platform to a construction position and descending to a seabed, the four platform pile legs penetrate through four platform pile leg holes in the pile stabilizing platform one by one correspondingly and then are inserted into the seabed so as to position the pile stabilizing platform, the crane ship vertically and reversely hoists the pile stabilizing platform again to leave the water surface, and the pile stabilizing platform is fixed on the four platform pile legs by using pin holes in the platform pile legs. The construction method of the pile-stabilizing platform is long in time consumption and high in cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multifunctional self-elevating offshore wind power construction platform which integrates six operation functions of jacket pile foot construction, single-pile stabilizing construction, rock embedding and redrawing construction of rock-embedded piles, offshore wind power installation and operation and maintenance, and has the advantages of light weight, small size of a platform main body and low manufacturing cost.
The purpose of the invention is realized as follows: a multifunctional self-elevating offshore wind power construction platform comprises a platform main body, a main crane, an auxiliary crane, four jacket pile foot grippers, a single pile gripper, an anchoring system and a generator; wherein the content of the first and second substances,
the platform main body is a rectangular cube and comprises a platform bottom plate, a main deck and a plurality of cabins which are divided by longitudinal and transverse bulkheads arranged between the platform bottom plate and the main deck; the left bow part, the right bow part, the port rear part and the starboard rear part of the platform main body are respectively provided with a platform pile leg hole, the hole wall of each platform pile leg hole is provided with a reinforcing structure, four pile fixing chambers which are in one-to-one correspondence with the four platform pile leg holes are arranged on a main deck, one platform pile leg is arranged in each of the four pile fixing chambers through a ring beam lifting mechanism, and the bottom of each platform pile leg is provided with a pile shoe;
a port groove and a starboard groove which penetrate through the depth are symmetrically formed in the port middle-rear part and the starboard middle-rear part of the platform main body in a one-to-one correspondence manner; the middle part of the stern end of the platform main body is provided with an arc groove, and a left floating platform and a right floating platform extend backwards along the left side and the right side of the arc groove in a one-to-one correspondence manner, so that a left gap is formed between the left side surface of the left floating platform and the stern end surface of the platform main body, and a right gap is formed between the right side surface of the right floating platform and the stern end surface of the platform main body;
the distance between the port groove and the starboard groove, the distance between the left gap and the right gap, the distance between the port groove and the left gap and the distance between the starboard groove and the right gap are at least the minimum center distance of the pile foot of the jacket;
the main crane is of a pile winding type and comprises a crane base and a main crane arm frame arranged on a rotary disc in the crane base, the crane base is fixed on the top surface of a pile fixing chamber at the rear part of a starboard, and the rotary disc in the crane base is sleeved on a platform pile leg at the rear part of the starboard;
the auxiliary crane is arranged on the upper part of the front side surface of the pile fixing chamber at the rear part of the port;
two jacket pile foot grippers are arranged on the main deck and correspondingly face the port groove and the starboard groove one by one, and the other two jacket pile foot grippers are correspondingly arranged on the left floating platform and the right floating platform one by one and correspondingly face the left gap and the right gap one by one;
the single-pile embracing device is arranged at the stern part of the main deck and opposite to the arc groove in the middle of the stern end after two jacket pile foot embracing devices which are arranged on the left floating platform and the right floating platform in a one-to-one correspondence manner are disassembled;
the anchoring system comprises two front anchoring winches and two rear anchoring winches, the two front anchoring winches are arranged at the front part of the main deck, and the two rear anchoring winches are arranged at the rear part of the main deck;
the generator is installed at the front left part of the main deck.
The multifunctional self-elevating offshore wind power construction platform is characterized in that a plurality of groups of bolt holes are uniformly formed in the pile leg along the length direction at intervals, the number of the bolt holes in each group is four, and the bolt holes are uniformly distributed on the same horizontal plane along the circumference of the pile leg of the platform; the ring beam lifting mechanism comprises a high-position ring beam, a low-position ring beam, four high-position lifting oil cylinders, four low-position lifting oil cylinders, four high-position bolt oil cylinders and four low-position bolt oil cylinders; the high-position ring beam and the low-position ring beam are sleeved on the platform pile leg up and down and can slide; four high-position lifting oil cylinders are uniformly arranged on a main deck in the pile fixing chamber along the periphery of the pile leg, and the top ends of piston rods of the four high-position lifting oil cylinders are hinged with the high-position ring beam; four low-level lift cylinders are uniformly fixed on a reinforcing structure of a platform pile leg hole along the periphery of the platform pile leg, and the top ends of piston rods of the four low-level lift cylinders are hinged with the low-level ring beam; the four high-position bolt oil cylinders correspond to any one group of bolt holes on the platform pile leg one by one and are radially arranged on the outer peripheral surface of the high-position ring beam in a staggered manner with the four high-position lifting oil cylinders, and piston rods of the four high-position bolt oil cylinders are connected with a bolt and are inserted into a group of bolt holes on the platform pile leg one by one when the piston rods of the four high-position bolt oil cylinders extend out; the four low-level bolt oil cylinders correspond to any one group of bolt holes on the platform pile leg one by one and are radially installed on the outer peripheral surface of the low-level ring beam in a staggered manner with the four low-level lifting oil cylinders, and piston rods of the four low-level bolt oil cylinders are connected with bolts and are inserted into a group of bolt holes on the platform pile leg one by one when the piston rods of the four low-level bolt oil cylinders extend out.
The multifunctional self-elevating offshore wind power construction platform comprises a jacket pile foot pile gripper, a pile driving mechanism and a pile driving mechanism, wherein the pile driving; the fixed seat comprises a rear cross beam, a front cross beam and two groups of connecting rods which are connected between two sides of the rear cross beam and two sides of the front cross beam in a one-to-one correspondence manner; the rear end of the main oil cylinder pushing seat is hinged to the middle of the rear cross beam of the fixed seat, and a pair of sliding rails is arranged on the top surface of the main oil cylinder pushing seat; the sliding seats are arranged on a pair of sliding rails of the main oil pushing cylinder seat; the pair of main push oil cylinders are hinged to two sides of the main push oil cylinder seat, and the ends of piston rods of the pair of main push oil cylinders are hinged to the rear ends of two sides of the sliding seat; a pair of side-push oil cylinders are correspondingly arranged at two ends of the front beam of the fixed seat one by one, and the ends of the piston rods of the pair of side-push oil cylinders are respectively provided with a roller and are propped against two side surfaces of the sliding seat; the pile embracing mechanism comprises an embracing arm base, a left embracing arm, a right embracing arm, a front embracing arm, a pair of embracing arm oil cylinders, a transverse locking oil cylinder, a vertical locking oil cylinder and eight pile embracing oil cylinders; the arm-holding base is connected to the front end of the sliding seat; the rear ends of the left holding arm and the right holding arm are hinged to the left end and the right end of the holding arm base in a one-to-one correspondence manner; the rear end of the front arm is hinged to the front end of the left arm; the pair of arm-embracing oil cylinders are hinged between the left end and the right end of the arm-embracing base and the middle parts of the outer side surfaces of the left arm-embracing and the right arm-embracing base in a one-to-one correspondence manner; the transverse locking oil cylinder is hinged between the outer side surface of the front part of the left arm and the outer side surface of the rear part of the front arm; the vertical locking oil cylinder is arranged at the front end of the right arm, and a piston rod of the vertical locking oil cylinder is inserted into a pin hole formed in the front end of the front arm when the front end of the front arm and the front end of the right arm are closed; a pushing oil cylinder is arranged in the middle of the embracing arm base, four embracing pile oil cylinders are radially arranged at the rear part, the middle part, the front part and the front end of the left embracing arm in a one-to-one correspondence manner, two embracing pile oil cylinders are radially arranged at the rear part and the front part of the right embracing arm, one embracing pile oil cylinder is radially arranged in the middle of the front embracing arm, and the included angle of the adjacent embracing pile oil cylinders is 45 degrees; two ends of a rear cross beam of the fixing seat of the upper pile embracing mechanism are respectively connected with two ends of a rear cross beam of the fixing seat of the lower pile embracing mechanism through a rear upright post; the two ends of the front cross beam of the fixing seat of the upper pile embracing mechanism are respectively connected with the two ends of the front cross beam of the fixing seat of the lower pile embracing mechanism through a front upright post.
The multifunctional self-elevating offshore wind power construction platform is characterized in that the crane base is of a round-top structure with a square bottom and a round top.
The multifunctional self-elevating offshore wind power construction platform comprises a main boom frame, a main slewing area, a slewing area limiting area, a slewing bearing, a.
The multifunctional self-elevating offshore wind power construction platform is characterized in that a reinforcing area for storing the rock-socketed drilling rig and the hydraulic pile hammer is arranged at the rear part of the main deck, and the thickness of the main deck in the reinforcing area is larger than the wall thickness of the main deck in other areas.
The multifunctional self-elevating offshore wind power construction platform is characterized in that the length of the platform main body is 55.0m, the width of the platform main body is 31m, and the molding depth of the platform main body is 5.5 m; the outer diameter of the platform pile leg is phi 2.8m, and the length of the platform pile leg is 75 m; the length of each port groove and the width of each starboard groove are both 8m and 6.5 m.
The technical scheme of the multifunctional self-elevating offshore wind power construction platform has the following characteristics:
1. the platform pile legs are inserted into the seabed to lift the platform main body off the water surface, so that the influence of sea storm flow on the platform construction is overcome, the platform is in static operation in the platform construction after leaving the water surface, and the operation time is greatly prolonged.
2. The grooves are formed in the two sides of the platform main body, pile foot pile sinking construction of a three-pile or four-pile jacket foundation can be completed through one-time positioning, and the construction efficiency and the utilization rate of the platform are greatly improved.
3. The floating platform extends from the stern of the platform body to serve as a single-pile stabilizing and rock-socketed construction platform, the strengthening area is arranged on the platform body, a rock-socketed drilling machine and a hydraulic pile hammer can be placed, the traditional rock-socketed platform, the rock-socketed drilling machine and the hydraulic pile hammer barge are taken into consideration, and construction cost is greatly saved.
4. The generator is arranged on the main deck of the platform main body, and the mute generator with the fire alarm monitoring and fire fighting functions is configured, so that the cabin equipment and supporting facilities of the construction platform are reduced, the weight of the construction platform is reduced, the variable load is increased, and 600t heavy objects can be placed on the main deck for lifting operation.
5. A plurality of hoisting working conditions are configured around the pile type main crane, the 640t hoisting capacity of the 60m arm support can hoist the rock-socketed drilling machine and the large hydraulic pile hammer, the 320t hoisting capacity of the 80m arm support can install an offshore fan, and the 150t hoisting capacity of the 88 m arm support can install a 6WM offshore fan.
Drawings
FIG. 1 is a plan view of a platform body in the multifunctional jack-up offshore wind power construction platform of the present invention;
FIG. 2 is a side view of the multi-functional jack-up offshore wind power construction platform of the present invention;
FIG. 3 is a top view of the multi-functional jack-up offshore wind power construction platform of the present invention;
FIG. 4 is a schematic structural view of a ring beam lifting mechanism in the construction platform of the present invention;
FIG. 4a is a view from the A-A direction of the FIG. 4 seed;
FIG. 4B is a view from the B-B direction of the FIG. 4 variety;
FIG. 5 is a state diagram of a first condition of a main crane of the construction platform of the present invention;
FIG. 6 is a state diagram of a second condition of the main crane of the construction platform of the present invention;
FIG. 7 is a state diagram of a third condition of the main crane of the construction platform of the present invention;
fig. 8a is a side view of the jacket spud foot embracing device of the present invention;
fig. 8b is a top view of the jacket spud foot pile gripper of the present invention (arm-hugging state);
fig. 8c is a top view of the jacket spud foot pile gripper of the present invention (arm open position);
fig. 8d is a top view of the jacket spud foot pile gripper of the present invention (main thrust cylinder extended by 2 m);
fig. 8e is a top view of the jacket spud foot pile gripper of the present invention (2 m out of the main thrust cylinder with 4 left offset);
FIG. 8f is a top view of the jacket spud foot pile gripper of the present invention (2 m extension of the main thrust cylinder with 4 right offset);
fig. 9 is a state view of the construction platform of the present invention in the case of three-pile jacket construction with a toe interval of 25 m;
fig. 10 is a view showing the construction platform of the present invention in a state of construction of four jacket piles with a space between piles of 22 m;
fig. 11 is a view showing a construction platform according to the present invention in a state where four-pile jacket construction is performed with a space between piles of 25 m;
fig. 12 is a view showing a construction platform according to the present invention in a state where four-pile jacket construction is performed with a space between piles of 30 m;
fig. 13 is a state view of the construction platform of the present invention in single pile driving construction;
FIG. 14 is a view showing the construction platform of the present invention in a state of single-pile socketed, socketed drilling rig hoisting and socketed hydraulic hammer redressing;
FIG. 15 is a plan view of the present invention construction platform during installation and maintenance of a wind turbine;
FIG. 16 is an elevation view of the construction platform of the present invention in a state of installing a wind turbine and the operation and maintenance of the wind turbine.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 16, the multifunctional self-elevating offshore wind power construction platform of the present invention includes a platform main body 1, a main crane 4, an auxiliary crane 5, four jacket pile foot grippers 6, a single pile gripper 7, an anchoring system, and two generators 9.
The platform main body 1 is a rectangular cube with the length of 55.0m, the width of 31m and the depth of 5.5 m; the platform main body 1 comprises a platform bottom plate 11, a main deck 12 and a plurality of cabins which are divided by longitudinal and transverse bulkheads arranged between the platform bottom plate 11 and the main deck 12; the cabin comprises a ballast tank, a fuel oil tank, a fresh water tank and a cabin, and the cabin is provided with a hydraulic system, various pumps and other auxiliary equipment; a living area 14 is arranged at the front part of the main deck 12, a reinforced area 15 for storing the rock-socketed drilling rig and the hydraulic pile hammer is arranged at the rear part of the main deck 12, the thickness of the main deck 12 of the reinforced area 15 is 20mm, and the thickness of the main deck 12 of other areas is 14 mm.
A left bow part, a right bow part, a port rear part and a starboard rear part of the platform main body 1 are respectively provided with a platform pile leg hole, the hole wall of each platform pile leg hole is provided with a reinforcing structure, four pile fixing chambers 13 which are in one-to-one correspondence with the four platform pile leg holes are arranged on a main deck 12, a platform pile leg 2 is arranged in each of the four pile fixing chambers 13 through a ring beam lifting mechanism 3, the bottom of each platform pile leg 2 is provided with a pile shoe 2A, the outer diameter of each platform pile leg 2 is phi 2.8m, and the length of each platform pile leg 2 is 75 m; the length x width x height of the pile shoe 2A is 6.7m x 5.7m x 1.4m, and the area is about 38 square meters.
A plurality of groups of bolt holes 20 are uniformly formed in each platform pile leg 2 along the length direction at intervals, the number of the bolt holes 20 in each group is four, and the bolt holes are uniformly distributed on the same horizontal plane along the circumference of the platform pile leg 2; the ring beam lifting mechanism 3 comprises a high-position ring beam 31, a low-position ring beam 32, four high-position lifting oil cylinders 33, four low-position lifting oil cylinders 34, four high-position bolt oil cylinders 35 and four low-position bolt oil cylinders 36; wherein, the high ring beam 31 and the low ring beam 32 are sleeved on the platform pile leg 2 up and down and can slide; four high-position lifting oil cylinders 33 are uniformly arranged on the main deck 12 in the pile fixing chamber 13 along the periphery of the platform pile leg 2, and the top ends of piston rods of the four high-position lifting oil cylinders 33 are hinged with the high-position ring beam 31; four low-level lift cylinders 34 are uniformly fixed on the reinforcing structure of the platform pile leg hole along the periphery of the platform pile leg 2, and the top ends of the piston rods of the four low-level lift cylinders 34 are hinged with the low-level ring beam 32; the four high-position bolt oil cylinders 35 correspond to any one group of bolt holes 20 on the platform pile leg 2 one by one and are radially arranged on the outer peripheral surface of the high-position ring beam 31 in a staggered manner with the four high-position lifting oil cylinders 33, the piston rods of the four high-position bolt oil cylinders 35 are connected with a bolt, and the four high-position bolt oil cylinders 35 are inserted into one group of bolt holes 20 on the platform pile leg 2 one by one when the piston rods extend out; the four low-position bolt oil cylinders 36 correspond to any one group of bolt holes 20 on the platform pile leg 2 one by one and are radially installed on the outer peripheral surface of the low-position ring beam 32 in a staggered manner with the four low-position lifting oil cylinders 34, and the piston rods of the four low-position bolt oil cylinders 36 are all connected with a bolt and are inserted into a group of bolt holes 20 on the platform pile leg 2 one by one when the piston rods of the four low-position bolt oil cylinders 36 extend out.
After the construction platform arrives at an offshore construction site, the four platform pile legs 2 are inserted into the seabed by using the ring beam lifting mechanisms 3 arranged in the four pile fixing chambers 13, so that the platform main body 1 is lifted to leave the water surface. The four high-position lifting oil cylinders 33 and the four low-position lifting oil cylinders 34 in each ring beam lifting mechanism 3 are controlled to simultaneously extend and retract, and the bolts on the four high-position bolt oil cylinders 35 and the bolts on the four low-position bolt oil cylinders 36 are matched to be inserted into and pulled out of the bolt holes 20 of the platform spud legs 2, so that the platform spud legs 2 can be continuously lifted, and the platform main body 1 can be continuously lifted.
A port groove 141 and a starboard groove 142 which penetrate through the depth are symmetrically formed in the port middle-rear part and the starboard middle-rear part of the platform main body 1 in a one-to-one correspondence manner, wherein the length of each port groove 141 and the width of each starboard groove 142 are 8m, and the width of each port groove 141 and the width of each starboard groove 142 are 6.5 m; an arc groove 143 is formed in the middle of the stern end of the platform body 1, and a left floating platform 151 and a right floating platform 152 extend backwards along the left side and the right side of the arc groove 143 in a one-to-one correspondence manner, so that a left gap 161 is formed between the left side surface of the left floating platform 152 and the stern end surface of the platform body 1, and a right gap 162 is formed between the right side surface of the right floating platform 152 and the stern end surface of the platform body 1.
The distance between the port groove 141 and the starboard groove 142, the distance between the left notch 161 and the right notch 162, the distance between the port groove 141 and the left notch 161, and the distance between the starboard groove 142 and the right notch 162 is at least the minimum center distance of the pile foot 40 of the jacket; at present, the minimum center distance of the pile foot 40 of the offshore wind power jacket is 22m, the maximum is 30m and is 25 m.
The main crane 4 is of a pile winding type and comprises a crane base and a main crane arm frame arranged on a rotary disc in the crane base, the crane base is fixed on the top surface of a pile fixing chamber 13 at the rear part of a starboard, and the crane base is of a round structure, namely the bottom is a square opening and the top is a round opening; the rotary disk of the crane base is sleeved on the pile leg 2 at the rear part of the starboard. The main crane 3 is configured with three working conditions, namely, the length of the main boom frame is 60m, the crane weight is 640t in the limited rotation area 18, the length of the boom frame is 80m, the crane weight is 320t in the limited rotation area 18, the length of the main boom frame is 85m, and the crane weight is 150t in the limited rotation area 18.
The auxiliary crane 5 is installed on the upper part of the front side surface of the pile fixing chamber 13 at the port rear part.
Two of the jacket foot grippers 6 are mounted on the main deck 12 and face the port and starboard recesses 141 and 142, respectively, one to one, and the other two jacket foot grippers 6 are mounted on the left and right pylons 151 and 152 and face the left and right apertures 161 and 162, respectively, one to one.
The jacket pile foot pile gripper 6 comprises an upper layer pile gripping mechanism 6A and a lower layer pile gripping mechanism 6B which have the same structure, wherein the upper layer pile gripping mechanism 6A and the lower layer pile gripping mechanism 6B respectively comprise a fixed seat, a main push oil cylinder seat 64, a sliding seat 65, a pair of main push oil cylinders 66, a pair of side push oil cylinders 67 and a pile gripping mechanism; the fixing seat comprises a rear cross beam 61, a front cross beam 62 and two groups of connecting rods 63 which are connected between two sides of the rear cross beam 61 and two sides of the front cross beam 62 in a one-to-one correspondence manner; the rear end of the main oil cylinder pushing seat 62 is hinged to the middle of the rear cross beam 61 of the fixing seat, and the top surface of the main oil cylinder pushing seat 64 is provided with a pair of slide rails; the sliding seat 65 is installed on a pair of slide rails of the main oil pushing cylinder seat 64; a pair of main push oil cylinders 66 are hinged on two sides of the main push oil cylinder base 64, and the ends of the piston rods of the pair of main push oil cylinders 66 are hinged on the rear ends of two sides of the sliding base 65; a pair of side-push oil cylinders 67 are correspondingly arranged at two ends of the front beam 62 of the fixed seat one by one, and the ends of the piston rods of the pair of side-push oil cylinders 67 are respectively provided with a roller and are propped against two side surfaces of the sliding seat 65; the pile embracing mechanism comprises a embracing arm base 681, a left embracing arm 682, a right embracing arm 683, a front embracing arm 684, a pair of embracing arm oil cylinders 685, a transverse locking oil cylinder 686, a vertical locking oil cylinder 687 and eight embracing pile oil cylinders 688; the arm embracing base 681 is connected to the front end of the sliding seat 65; the rear ends of the left holding arm 682 and the right holding arm 683 are hinged to the left end and the right end of the holding arm base 681 in a one-to-one correspondence manner; the rear end of the front arm 684 is hinged to the front end of the left arm 682; the pair of arm-embracing oil cylinders 685 are hinged between the left end and the right end of the arm-embracing base 681 and the middle parts of the outer side surfaces of the left arm-embracing 682 and the right arm-embracing 683 in a one-to-one correspondence manner; the transverse locking oil cylinder 686 is hinged between the outer side face of the front part of the left holding arm 682 and the outer side face of the rear part of the front holding arm 684; the vertical locking oil cylinder 667 is arranged at the front end of the right embracing arm 683, and a piston rod of the vertical locking oil cylinder 687 is inserted into a pin hole arranged at the front end of the front embracing arm 684 when the front end of the front embracing arm 664 and the front end of the right embracing arm 683 are closed; a pushing oil cylinder is arranged in the middle of the embracing arm base 681, four embracing pile oil cylinders 688 are radially arranged at the rear part, the middle part, the front part and the front end of the left embracing arm 682 one by one, two embracing pile oil cylinders 688 are radially arranged at the rear part and the front part of the right embracing arm 683, one embracing pile oil cylinder 688 is radially arranged in the middle of the front embracing arm 684, and the included angle of the adjacent embracing pile oil cylinders is 45 degrees; the fixed seat of the upper pile embracing mechanism 6A is arranged on the main deck 12, and two ends of the rear cross beam 62 of the fixed seat of the upper pile embracing mechanism 6A are respectively connected with two ends of the rear cross beam 62 of the fixed seat of the lower pile embracing mechanism 6B through a rear upright post 6D; both ends of the front cross beam 61 of the fixing seat of the upper pile embracing mechanism 6A and both ends of the front cross beam 61 of the fixing seat of the lower pile embracing mechanism 6B are respectively connected through a front upright post 6C (see fig. 8a to 8 f). During pile foot pile sinking construction, a pair of main push oil cylinders 66 and a pair of side push oil cylinders 67 of the lower layer pile embracing mechanism 6B and the lower layer pile embracing mechanism 6B synchronously operate to adjust the position of the pile embracing mechanism so as to adjust the coordinate position of the pile foot, the opening and the embracing of the left embracing arm 62, the right embracing arm 63 and the front embracing arm 64 are realized through a pair of embracing arm oil cylinders 685, a transverse locking oil cylinder 686 and a vertical locking oil cylinder 687 of the pile embracing mechanisms in the upper layer pile embracing mechanism 6A and the lower layer pile embracing mechanism 6B, and the verticality of the pile foot of the conduit frame in the pile sinking process is adjusted through sixteen pile embracing oil cylinders 688 in the upper layer pile embracing mechanism 6A and the lower layer pile embracing mechanism 6B;
the single pile embracing device 7 is arranged at the stern part of the main deck 12 and opposite to the arc groove 143 at the middle part of the stern end after two jacket pile foot embracing devices 6 which are arranged on the left floating platform 151 and the right floating platform 152 in a one-to-one correspondence way are disassembled; the structure of the single pile embracing device 7 is the same as that of the jacket pile foot embracing device 6.
The anchoring system comprises two front anchoring winches 81 and two rear anchoring winches 82, the two front anchoring winches 81 are arranged at the front part of the main deck 12, and the two rear anchoring winches 82 are arranged at the rear part of the main deck 12.
Two generators 9 are arranged on the main deck 12 and positioned at the front left part; the two generators 9 are both silent generators which are provided with a fire monitoring and carbon dioxide extinguishing system into a whole; one 600EKW and the other 100 EKW. By arranging two generators on the main deck 12, cabin equipment and piping can be reduced, the weight of the platform is greatly reduced, and the variable load of the platform is increased.
The multifunctional self-elevating offshore wind power construction platform has the total variable load of 1200t and the variable load of the main deck 12 of 600t, and the main deck 12 can be used for placing four jacket pile foot pile grippers 7, an embedded rock drilling rig 30, a single pile gripper 6, a hydraulic pile hammer, a fan unit and other construction equipment; each jacket pile foot pile gripper 7 weighs about 50t, an embedded rock drilling machine weighs about 200t, a single pile gripper 6 weighs about 200t, and a hydraulic pile hammer weighs about 300t, the equipment is used for different construction projects and cannot be simultaneously installed on the main deck 12, the variable load of the main deck 12 at other positions is 600t, and the main loads are ballast water, fresh water and fuel oil.
The load of the main deck 12 is 8.0t per square meter, and the load of the area 10 for storing the rock-socketed drilling machine and the hydraulic hammer at the rear part of the main deck 12 is designed to be 15t per square meter (see figure 3).
In order to further expand the functions of the multifunctional self-elevating offshore wind power construction platform, the main crane 4 is designed in a diversified manner, the main crane 4 is provided with two main hooks shaped like a Chinese character 'shan', and the main boom frame is configured with three working conditions:
performance parameters of the main crane under working conditions of 1 and 60 meters of the main crane boom (see fig. 5):
the main hook 1: hoisting capacity: 320t (standing state, static lifting);
full load working amplitude: 11-32 m;
maximum lifting height 96m (above the deck surface 76m, deck surface to horizontal 20m)
The main hook 2: hoisting capacity: 320t (standing state, static lifting);
full load working amplitude: 11-32 m;
the maximum lifting height is 96m (76 m above the deck surface, 20m from the deck surface to the horizontal plane);
the main hook 1 and the main hook 2 are lifted simultaneously: hoisting capacity: 640t
Full load working amplitude: 11-16 m;
the working radius is the 18 restricted area shown in FIG. 3;
the maximum lifting height is 96m (76 m above the deck surface, 20m from the deck surface to the horizontal plane);
the working condition can lift the embedded rock drilling machine and the large hydraulic hammer;
performance parameters of the main crane under working conditions of 2 and 80 meters of main crane arm support (see figure 6)
The main hook 1: hoisting capacity: 320t (standing state, static lifting);
full load working amplitude: 20-25 m;
the maximum lifting height is 114m (94 m above the deck surface, 20m from the deck surface to the horizontal plane);
the main hook 2: safe workload 320t (standing, static lifting);
full load working amplitude: 20-25 m;
the maximum lifting height is 114m (94 m above the deck surface, 20m from the deck surface to the horizontal plane);
the offshore wind turbine can be installed under the working condition;
performance parameters of the main crane under working condition 3 and 88 m of the main crane arm support (see figure 7)
The main hook 1: hoisting capacity: 150t (standing, static lifting);
full load working amplitude: 22-25 m;
the maximum lifting height is 123m (103 m above the deck surface, 20m from the deck surface to the horizontal plane);
the main hook 2: lifting capacity 150t (standing state, static lifting);
full load working amplitude: 22-25 m;
the maximum lifting height is 123m (103 m above the deck surface, 20m from the deck surface to the horizontal plane);
this operating mode can install 6MW offshore wind turbine.
The invention relates to a multifunctional self-elevating offshore wind power construction platform, which is characterized in that four platform pile legs 2 are put down and inserted into a seabed by inserting and pulling pins through four ring beam lifting mechanisms 3 according to the self-provided GPS positioning system for positioning, the platform main body 1 is fixed above the water surface by utilizing the counterforce of the seabed surface to pile shoes 2A, the four platform pile legs 2 are lightly ballasted and pressure-maintained for 2 hours by utilizing the dead weight of a construction platform 100 after the platform main body 1 leaves the water surface, then a valve remote control system on the construction platform 100 is operated to transfer ballast water to ballast tanks adjacent to the four platform pile legs 2, the stress of the platform pile legs 2 is increased so as to realize the heavy ballasting of the platform pile legs 2, the pile legs 2A are further tamped to ensure that the construction platform has enough safety coefficient during the hoisting operation, and the platform pile legs 2 wound by a main crane 4 are heavily ballasted to 2000t (design heavy ballasting of 2500t, 1.2 times of safety factor), the maximum stress of the platform pile leg 2 wound by the main crane 4 is about 1600t when the main crane 4 lifts 320t of components in the construction operation and rotates fully, and the safety factor is 1.2 times. And (3) carrying out heavy pressure maintaining for 4 hours on the construction platform, and monitoring that the stress of the platform pile leg 2 wound by the main crane 4 is unchanged, so that the construction platform can carry out safe operation.
When a three pile jacket leg construction is performed (see fig. 9), the barge 200 carrying the leg 40 of the jacket is positioned on the starboard side of the construction platform 100 with a safety distance of 5m, and it is ensured that the farthest leg and the nearest leg are within the working radius of the main crane 4. The pile feet 40 on the lifting barge 200 of the main crane 4 are respectively inserted into the jacket pile foot embracing device 6 aligned with the port groove 141, the jacket pile foot embracing device 6 aligned with the starboard groove 142 and the single pile embracing device 7 aligned with the circular arc groove 143, the coordinate positions of the three pile feet 40 can be accurately adjusted one by the two jacket pile foot embracing devices 6 and the single pile embracing device 7, the pile feet 40 are inserted into the seabed by the self weight of the pile feet and are seated, then the sling of the main crane 4 is released, the verticality of the three pile feet 40 is adjusted within 3 one by the two jacket pile foot embracing devices 6 and the single pile embracing device 7, the main crane 4 lifts the hydraulic pile hammer placed in the reinforcing area 15 of the main deck 12 to carry out pile sinking construction of the pile feet 40 and carry out dynamic monitoring until all the pile feet 40 of the three jackets complete pile sinking and reach the designed bottom elevation (the bottom elevation of the jacket is about-10 m underwater, and then, the platform main body 1 is lowered to a floating state by using the ring beam lifting mechanism 3, the four platform pile legs 2 are pulled out of the field, and the pile feet 40 of the three guide pipe frames are positioned at one time to complete construction.
In the construction of four jacket legs (see fig. 10, 11 and 12), the single pile grippers 7 are removed, one jacket leg gripper 6 is installed on each of the left and right floating platforms 151 and 152 and is aligned with the left and right notches 161 and 162 in a one-to-one correspondence, the coordinates of the four jacket legs 40 are located in the port-side groove 141, the starboard-side groove 142, the left and right notches 161 and 162, the legs on the main crane 4 lifting barge 200 are inserted into the jacket leg grippers 6 aligned with the port-side groove 141, the jacket leg grippers 6 aligned with the starboard-side groove 142, the jacket leg grippers 6 aligned with the left notch 161, and the jacket leg grippers 6 aligned with the right notch 162, respectively, the coordinate positions of the four jacket legs 40 can be precisely adjusted in a one-to-one correspondence by the main push cylinders 66 and the side push cylinders 67 on the four jacket leg grippers 6, the self weights of the main cranes 4 inserted into the seabed are released, and then adjusting the verticality of the pile foot 40 within 3 per thousand by a pile embracing oil cylinder 688 in the jacket pile foot embracing device 6, lifting a hydraulic pile driving hammer placed on the main deck 12 by the main crane 4 to carry out pile foot pile sinking construction and dynamically monitoring until all the pile feet 40 of the four jackets complete pile sinking and reach the designed bottom elevation.
The construction of the three-pile/four-pile jacket can be completed by positioning and lifting the platform main body 1 once after the construction platform enters a field, pile foot pile sinking construction of the offshore wind power three-pile jacket with the pile foot center distance of 25m can be performed, pile foot pile sinking construction of the offshore wind power four-pile jacket with the pile foot center distances of 30m, 25m and 22m can be performed, and a safety distance of 5m is arranged between the pile wall of the jacket and the platform main body 1 in the pile hanging process of the pile foot 40 of the jacket. Pile sinking construction can be realized without displacement in the construction process of the three-pile/four-pile jacket, so that the operation efficiency of the jacket foundation can be greatly improved.
The construction platform can also be used as a single-pile stabilizing platform and used for pile sinking construction of offshore wind power single-pile foundations. According to the construction platform, a left floating platform and a right floating platform extend from the stern end of a platform main body, a single-pile embracing pile device 7 is installed on the left floating platform and the right floating platform, the positioning of a single pile 50 is realized through a longitudinal pushing oil cylinder and a lateral pushing oil cylinder on the single-pile embracing pile device 7, the pile stabilizing and dynamic monitoring in the pile sinking construction process are realized through a radial pushing oil cylinder on the single-pile embracing pile device 7, the verticality of the single pile 50 is adjusted in the sedimentation process of the single pile 50 through a pile embracing oil cylinder on the single-pile embracing pile device 7, and a main crane 4 with the hoisting capacity of 640t lifts a hydraulic pile hammer placed in a reinforcing area 15 of the platform main body 1 to carry out the driving of the single pile 50 (fig. 13).
The construction platform can also be used as a construction platform of the rock-socketed pile for rock-socketed construction and repeated driving construction of the rock-socketed pile (figure 14). Because the marine wind power project geological rock-soil layer in south China is more and harder, in pile foundation construction, the hydraulic pile hammer can not be constructed to the design elevation once, secondary construction is carried out after rock embedding, the steel structure platform needs to be manufactured by adopting the traditional rock embedding construction platform, the positioning platform pile legs, the hydraulic pile hammer, a large-scale crane ship and a crawler crane, the consumed time is long, the cost is high, the rock embedding pile foundation form is different for each marine wind power project, the steel structure platform needs to be customized, the utilization is low, the resource waste phenomenon exists, the bearing capacity of the steel structure platform is limited, and the large-scale hydraulic hammer can not be placed. After the construction platform 100 is positioned according to a GPS positioning system, the platform body 1 can be lifted off the water surface through synchronous pin inserting and pulling between the four ring beam lifting mechanisms 3 and the four platform pile legs 2, and the construction platform can be used as a construction platform of a rock-socketed pile foundation, a main crane 4 with the lifting capacity of 640t firstly lifts a rock-socketed drilling machine 30 placed in a reinforcing area 15 of the platform body 1 to carry out rock-socketed construction on a rock-socketed pile 60, and then lifts a hydraulic pile hammer to carry out repeated driving construction on the rock-socketed pile 60.
The construction platform disclosed by the invention also has an installation function of offshore wind power, the construction platform disclosed by the invention can carry two 6MW fans, 8000mmX8000mm Bailey frames are arranged on the starboard side of the platform main body 1 and used for assembling blades 70, a cabin and a hub of the offshore wind power, one blade 70 is transversely arranged on a main deck 12, the other two blades 70 extend out of the starboard and are symmetrically arranged (see figure 15), after the fans are assembled, an auxiliary crane 5 is matched with a main crane 4 with the lifting capacity of 320t to jointly lift a tower drum 71, the cabin 72, the hub and the blades of the offshore wind power (see figure 16), and wind power assembly is completed.
The construction platform also has the functions of maintenance, part replacement and fault maintenance of the offshore wind power in a fixed period, such as blade replacement, motor fault maintenance, gear replacement and the like, and the construction platform carries fan parts to be replaced to enter a field, can perform maintenance on the fan after the four platform pile legs are positioned, and has the function similar to fan installation (see fig. 16).
The invention relates to a multifunctional self-elevating offshore wind power construction platform, which is a platform specially used for foundation construction of a three-pile or four-pile jacket of offshore wind power, and has six functions of rock embedding of rock-embedded piles, a repeat driving platform, a pile stabilizing platform for single-pile foundation construction, a fan installation platform for offshore wind power and an operation and maintenance platform for offshore wind power.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.

Claims (7)

1. A multifunctional self-elevating offshore wind power construction platform comprises a platform main body, a main crane, an auxiliary crane, four jacket pile foot grippers, a single pile gripper, an anchoring system and a generator; it is characterized in that the preparation method is characterized in that,
the platform main body is a rectangular cube and comprises a platform bottom plate, a main deck and a plurality of cabins which are divided by longitudinal and transverse bulkheads arranged between the platform bottom plate and the main deck; the left bow part, the right bow part, the port rear part and the starboard rear part of the platform main body are respectively provided with a platform pile leg hole, the hole wall of each platform pile leg hole is provided with a reinforcing structure, four pile fixing chambers which are in one-to-one correspondence with the four platform pile leg holes are arranged on a main deck, one platform pile leg is arranged in each of the four pile fixing chambers through a ring beam lifting mechanism, and the bottom of each platform pile leg is provided with a pile shoe;
a port groove and a starboard groove which penetrate through the depth are symmetrically formed in the port middle-rear part and the starboard middle-rear part of the platform main body in a one-to-one correspondence manner; the middle part of the stern end of the platform main body is provided with an arc groove, and a left floating platform and a right floating platform extend backwards along the left side and the right side of the arc groove in a one-to-one correspondence manner, so that a left gap is formed between the left side surface of the left floating platform and the stern end surface of the platform main body, and a right gap is formed between the right side surface of the right floating platform and the stern end surface of the platform main body;
the distance between the port groove and the starboard groove, the distance between the left gap and the right gap, the distance between the port groove and the left gap and the distance between the starboard groove and the right gap are at least the minimum center distance of the pile foot of the jacket;
the main crane is of a pile winding type and comprises a crane base and a main crane arm frame arranged on a rotary disc in the crane base, the crane base is fixed on the top surface of a pile fixing chamber at the rear part of a starboard, and the rotary disc in the crane base is sleeved on a platform pile leg at the rear part of the starboard;
the auxiliary crane is arranged on the upper part of the front side surface of the pile fixing chamber at the rear part of the port;
two jacket pile foot grippers are arranged on the main deck and correspondingly face the port groove and the starboard groove one by one, and the other two jacket pile foot grippers are correspondingly arranged on the left floating platform and the right floating platform one by one and correspondingly face the left gap and the right gap one by one;
the single-pile embracing device is arranged at the stern part of the main deck and opposite to the arc groove in the middle of the stern end after two jacket pile foot embracing devices which are arranged on the left floating platform and the right floating platform in a one-to-one correspondence manner are disassembled;
the anchoring system comprises two front anchoring winches and two rear anchoring winches, the two front anchoring winches are arranged at the front part of the main deck, and the two rear anchoring winches are arranged at the rear part of the main deck;
the generator is installed at the front left part of the main deck.
2. The multifunctional self-elevating offshore wind power construction platform according to claim 1, wherein the spud legs are uniformly provided with a plurality of groups of bolt holes at intervals along the length direction, each group of bolt holes is four in number and is uniformly arranged on the same horizontal plane along the circumference of the platform spud leg; the ring beam lifting mechanism comprises a high-position ring beam, a low-position ring beam, four high-position lifting oil cylinders, four low-position lifting oil cylinders, four high-position bolt oil cylinders and four low-position bolt oil cylinders; the high-position ring beam and the low-position ring beam are sleeved on the platform pile leg up and down and can slide; four high-position lifting oil cylinders are uniformly arranged on a main deck in the pile fixing chamber along the periphery of the pile leg, and the top ends of piston rods of the four high-position lifting oil cylinders are hinged with the high-position ring beam; four low-level lift cylinders are uniformly fixed on a reinforcing structure of a platform pile leg hole along the periphery of the platform pile leg, and the top ends of piston rods of the four low-level lift cylinders are hinged with the low-level ring beam; the four high-position bolt oil cylinders correspond to any one group of bolt holes on the platform pile leg one by one and are radially arranged on the outer peripheral surface of the high-position ring beam in a staggered manner with the four high-position lifting oil cylinders, and piston rods of the four high-position bolt oil cylinders are connected with a bolt and are inserted into a group of bolt holes on the platform pile leg one by one when the piston rods of the four high-position bolt oil cylinders extend out; the four low-level bolt oil cylinders correspond to any one group of bolt holes on the platform pile leg one by one and are radially installed on the outer peripheral surface of the low-level ring beam in a staggered manner with the four low-level lifting oil cylinders, and piston rods of the four low-level bolt oil cylinders are connected with bolts and are inserted into a group of bolt holes on the platform pile leg one by one when the piston rods of the four low-level bolt oil cylinders extend out.
3. The multifunctional self-elevating offshore wind power construction platform according to claim 1, wherein the jacket pile foot pile gripper comprises an upper layer pile gripper mechanism and a lower layer pile gripper mechanism which are identical in structure, and the upper layer pile gripper mechanism and the lower layer pile gripper mechanism respectively comprise a fixed seat, a main push oil cylinder seat, a sliding seat, a pair of main push oil cylinders, a pair of side push oil cylinders and a pile gripper mechanism; the fixed seat comprises a rear cross beam, a front cross beam and two groups of connecting rods which are connected between two sides of the rear cross beam and two sides of the front cross beam in a one-to-one correspondence manner; the rear end of the main oil cylinder pushing seat is hinged to the middle of the rear cross beam of the fixed seat, and a pair of sliding rails is arranged on the top surface of the main oil cylinder pushing seat; the sliding seats are arranged on a pair of sliding rails of the main oil pushing cylinder seat; the pair of main push oil cylinders are hinged to two sides of the main push oil cylinder seat, and the ends of piston rods of the pair of main push oil cylinders are hinged to the rear ends of two sides of the sliding seat; a pair of side-push oil cylinders are correspondingly arranged at two ends of the front beam of the fixed seat one by one, and the ends of the piston rods of the pair of side-push oil cylinders are respectively provided with a roller and are propped against two side surfaces of the sliding seat; the pile embracing mechanism comprises an embracing arm base, a left embracing arm, a right embracing arm, a front embracing arm, a pair of embracing arm oil cylinders, a transverse locking oil cylinder, a vertical locking oil cylinder and eight pile embracing oil cylinders; the arm-holding base is connected to the front end of the sliding seat; the rear ends of the left holding arm and the right holding arm are hinged to the left end and the right end of the holding arm base in a one-to-one correspondence manner; the rear end of the front arm is hinged to the front end of the left arm; the pair of arm-embracing oil cylinders are hinged between the left end and the right end of the arm-embracing base and the middle parts of the outer side surfaces of the left arm-embracing and the right arm-embracing base in a one-to-one correspondence manner; the transverse locking oil cylinder is hinged between the outer side surface of the front part of the left arm and the outer side surface of the rear part of the front arm; the vertical locking oil cylinder is arranged at the front end of the right arm, and a piston rod of the vertical locking oil cylinder is inserted into a pin hole formed in the front end of the front arm when the front end of the front arm and the front end of the right arm are closed; a pushing oil cylinder is arranged in the middle of the embracing arm base, four embracing pile oil cylinders are radially arranged at the rear part, the middle part, the front part and the front end of the left embracing arm in a one-to-one correspondence manner, two embracing pile oil cylinders are radially arranged at the rear part and the front part of the right embracing arm, one embracing pile oil cylinder is radially arranged in the middle of the front embracing arm, and the included angle of the adjacent embracing pile oil cylinders is 45 degrees; two ends of a rear cross beam of the fixing seat of the upper pile embracing mechanism are respectively connected with two ends of a rear cross beam of the fixing seat of the lower pile embracing mechanism through a rear upright post; the two ends of the front cross beam of the fixing seat of the upper pile embracing mechanism are respectively connected with the two ends of the front cross beam of the fixing seat of the lower pile embracing mechanism through a front upright post.
4. The multifunctional self-elevating offshore wind power construction platform according to claim 1, wherein the crane base is a hemispherical structure with a square bottom and a round top.
5. The multifunctional self-elevating offshore wind power construction platform according to claim 1, wherein the main crane is configured with three working conditions, namely, a main boom frame length of 60m, a lifting capacity of 640t in a limited slewing area, a main boom frame length of 80m, a lifting capacity of 320t in a limited slewing area, a main boom frame length of 85m, and a lifting capacity of 150t in a limited slewing area.
6. The multifunctional jack-up offshore wind power construction platform according to claim 1, wherein the rear portion of the main deck is provided with a reinforced area for storing the rock-socketed drilling rig and the hydraulic pile hammer, and the thickness of the main deck of the reinforced area is greater than the wall thickness of the main deck of other areas.
7. The multifunctional jack-up offshore wind power construction platform according to claim 1, wherein the platform body has a length of 55.0m, a width of 31m, and a profile depth of 5.5 m; the outer diameter of the platform pile leg is phi 2.8m, and the length of the platform pile leg is 75 m; the length of each port groove and the width of each starboard groove are both 8m and 6.5 m.
CN202110460205.8A 2021-04-27 2021-04-27 Multifunctional self-elevating offshore wind power construction platform Pending CN113047253A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114030570A (en) * 2021-12-01 2022-02-11 扬州万隆船业有限责任公司 Self-elevating offshore wind power operation and maintenance mother ship
CN114228946A (en) * 2021-11-09 2022-03-25 山东宏洲海洋工程有限公司 Pre-assembly process of offshore wind turbine
CN115258056A (en) * 2022-09-19 2022-11-01 南通泰胜蓝岛海洋工程有限公司 Integrated transportation overturning process for offshore steel pipe pile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114228946A (en) * 2021-11-09 2022-03-25 山东宏洲海洋工程有限公司 Pre-assembly process of offshore wind turbine
CN114228946B (en) * 2021-11-09 2024-01-12 山东宏洲海洋工程有限公司 Pre-assembling process for offshore wind turbine
CN114030570A (en) * 2021-12-01 2022-02-11 扬州万隆船业有限责任公司 Self-elevating offshore wind power operation and maintenance mother ship
CN115258056A (en) * 2022-09-19 2022-11-01 南通泰胜蓝岛海洋工程有限公司 Integrated transportation overturning process for offshore steel pipe pile

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