CN116892199B - Lifting foundation for offshore wind power installation platform and construction method thereof - Google Patents
Lifting foundation for offshore wind power installation platform and construction method thereof Download PDFInfo
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- CN116892199B CN116892199B CN202311154388.6A CN202311154388A CN116892199B CN 116892199 B CN116892199 B CN 116892199B CN 202311154388 A CN202311154388 A CN 202311154388A CN 116892199 B CN116892199 B CN 116892199B
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- 238000009434 installation Methods 0.000 title claims abstract description 54
- 238000010276 construction Methods 0.000 title claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 91
- 238000003466 welding Methods 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 27
- 238000003754 machining Methods 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- OFCNXPDARWKPPY-UHFFFAOYSA-N allopurinol Chemical compound OC1=NC=NC2=C1C=NN2 OFCNXPDARWKPPY-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
Classifications
-
- 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
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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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the technical field of offshore wind power, in particular to a lifting foundation for an offshore wind power installation platform and a construction method thereof, wherein the lifting foundation for the offshore wind power installation platform comprises a first supporting plate and a plurality of torsion blocks, and a plurality of transverse reinforcing ribs and a plurality of longitudinal reinforcing ribs are arranged on the rear side surface of the first supporting plate; the first supporting plate is provided with a plurality of mounting holes which are positioned at the intersections of the transverse reinforcing ribs and the longitudinal reinforcing ribs at intervals and are communicated front and back; mounting grooves communicated with the mounting holes are formed in the positions of the transverse reinforcing ribs, which are opposite to the front and rear of the mounting holes, and the positions of the longitudinal reinforcing ribs, which are opposite to the front and rear of the mounting holes; the rear ends of the torsion blocks respectively penetrate through the corresponding mounting holes and are fixedly inserted into the corresponding mounting grooves, so that the mounting strength of the torsion blocks is guaranteed, and the torsion blocks protrude out of the mounting parts formed by the parts of the front side surfaces of the first support plates, so that the lifting foundation can be arranged more compactly.
Description
Technical Field
The invention relates to the technical field of offshore wind power, in particular to a lifting foundation for an offshore wind power installation platform and a construction method thereof.
Background
The offshore wind power installation platform is equipment for installing an offshore wind power generation facility, the speed of the offshore wind power generation facility can be increased, the wind power installation platform is provided with various lifting systems, and the rack-and-pinion type lifting system is a frequently used lifting system. The lifting foundation is positioned in a spud leg surrounding well area of the offshore wind power installation platform, is an important component structure of the lifting system, and is mainly used for providing support for a gear box and is a bearing structure for connecting the spud legs and a main hull.
As shown in fig. 1, in order to make the lifting foundation lighter while ensuring the supporting strength of the lifting foundation, the current lifting foundation generally includes a supporting plate 100 arranged vertically, a plurality of reinforcing ribs 200 arranged vertically and horizontally are welded on the rear side of the supporting plate 100, a plurality of torsion blocks 300 for blocking the gearbox from rotating relative to the supporting plate are welded on the front side of the supporting plate 100, the rear ends of the torsion blocks 300 are welded on the front side of the supporting plate 100, and a plurality of triangular rib plates 400 arranged at intervals are welded on the periphery of the torsion blocks 300, so that the connection firmness degree of the torsion blocks 300 and the supporting plate 100 is ensured.
However, the gear box needs to avoid the setting position of the triangular rib plate when being installed, so that the interval distance between two upper and lower adjacent gear boxes is larger, the gear box arrangement on the lifting foundation is not compact enough, the integral structure of the lifting foundation is not compact enough, and the steel consumption of the lifting foundation is increased.
Disclosure of Invention
The invention aims to solve the technical problems that: at present, the arrangement of the triangular rib plates on the periphery of the torsion block leads to the insufficient compactness of the whole structure of the lifting foundation.
In order to solve the technical problem, the invention aims to provide a lifting foundation for an offshore wind power installation platform, which comprises the following components:
the back side surface of the first supporting plate is provided with a plurality of transverse reinforcing ribs and a plurality of longitudinal reinforcing ribs; the first supporting plate is provided with a plurality of mounting holes which are positioned at the intersection of each transverse reinforcing rib and each longitudinal reinforcing rib at intervals and are communicated in front-back direction; mounting grooves communicated with the mounting holes are formed in the positions of the transverse reinforcing ribs, which are opposite to the front and rear of the mounting holes, and the positions of the longitudinal reinforcing ribs, which are opposite to the front and rear of the mounting holes;
the rear ends of the torsion blocks respectively penetrate through the mounting holes and are fixedly inserted into the corresponding mounting grooves, the rear end side walls of the torsion blocks are fixed with the transverse reinforcing ribs and the longitudinal reinforcing ribs, and the front ends of the torsion blocks protrude out of the front side surface of the first supporting plate to form a mounting part for mounting a gear box of the gear rack lifting system.
Preferably, each mounting groove has a groove structure, and the bottom wall of each mounting groove is welded with the corresponding rear end part of the torsion block.
As a preferable scheme, the lifting foundation for the offshore wind power installation platform comprises:
a first left side plate disposed on a left side of the first support plate;
a first right side plate disposed on the right side of the first support plate;
the second backup pad is arranged the rear of first backup pad, the second backup pad the first right side board, first backup pad with first left side board encloses into the first bearing structure that is a section of thick bamboo.
Preferably, a plurality of first supporting sleeves for installing the gear box are arranged in the first supporting structure at intervals;
the rear side of the second supporting plate is provided with a second supporting structure extending backwards, and a second supporting sleeve for installing a bearing seat of the gear rack lifting system is fixed at the position, which is opposite to the front and rear of each first supporting sleeve, of one end, far away from the second supporting plate, of the second supporting structure.
As a preferable scheme, the middle part of the second supporting structure is provided with an installation space for the rack of the rack-and-pinion lifting system to pass through, and the upper part of the second supporting structure and the lower part of the second supporting structure are both provided with guide structures for guiding the rack;
the upper part of the cylinder cavity of the first supporting structure and the lower part of the cylinder cavity of the first supporting structure are respectively provided with a reinforcing baffle, and the first supporting plate and/or the second supporting plate are/is provided with a process hole for personnel to enter the cylinder cavity and weld each reinforcing baffle.
The construction method of the lifting foundation for the offshore wind power installation platform comprises the following steps of:
step S1, welding transverse reinforcing ribs and longitudinal reinforcing ribs on the rear side of a first supporting plate;
s2, installing each torsion block on the front side of the first supporting plate, welding the peripheral side of each torsion block and the hole wall of each installation hole, and welding the peripheral side of each torsion block and the slot wall of each installation slot;
and S3, machining the mounting parts of the torsion blocks so that the shape and the position size of each mounting part meet the mounting position requirement of the gear box.
Preferably, after the step S1 and before the step S2, the method includes:
s11, welding a first left side plate, a first right side plate and a second support plate;
step S12, welding a second support structure on the rear side of the second support plate;
step S13, welding each first support sleeve and each second support sleeve at corresponding positions of the first support structure and the second support structure;
s14, machining inner holes of the first support sleeves and inner holes of the second support sleeves, so that the inner hole sizes of the first support sleeves, the inner hole center line positions of the first support sleeves, the inner hole sizes of the second support sleeves and the inner hole center line positions of the second support sleeves meet the installation position requirements of the gearbox;
in the step S2, each of the mounting portions is processed with reference to the position of the center line of the inner hole of each of the first support sleeves and the position of the center line of the inner hole of each of the second support sleeves.
Preferably, the welding of each of the first support sleeves and each of the second support sleeves in the corresponding positions of the first support structure and the second support structure in the step S13 includes:
and a shape retaining mechanism is welded between each first support sleeve and each corresponding second support sleeve, and is used for connecting each first support sleeve and each corresponding second support sleeve into an integral rigid structure, and keeping the first support sleeves and the corresponding second support sleeves coaxially arranged at intervals.
Preferably, after the step S11 and before the step S12, the method further includes:
and S111, entering the upper part of the cylinder cavity of the first support structure and the lower part of the cylinder cavity of the first support structure through process holes, and respectively welding the reinforcing partition plate at the upper part of the cylinder cavity of the first support structure and the reinforcing partition plate at the lower part of the cylinder cavity of the first support structure.
As a preferable scheme, the upper part of the second supporting structure and the lower part of the second supporting structure are respectively provided with a guiding structure for guiding the rack, each guiding structure comprises a first stopping component and a second stopping component which are oppositely arranged at intervals left and right, a guiding space communicated with an installation space is formed between the first stopping component and the second stopping component, and each first stopping component and each second stopping component comprises an anti-abrasion plate which is arranged close to the guiding space and a backing plate which is far away from the guiding space and connected with the second supporting structure; the step S3 further includes:
and installing each backing plate on the second supporting structure, and machining one side, close to the guide space, of each backing plate so that after each wear-resisting plate is installed on the corresponding backing plate, the position of each guide space is matched with the position of the rack, and the width of each guide space is matched with the width of the rack.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a lifting foundation for an offshore wind power installation platform, which comprises the following components: the rear side surface of the first supporting plate is provided with a plurality of transverse reinforcing ribs and a plurality of longitudinal reinforcing ribs; the first supporting plate is provided with a plurality of mounting holes which are communicated in the front-back direction at intervals, and each mounting hole is positioned at the intersection of each transverse reinforcing rib and each longitudinal reinforcing rib; mounting grooves communicated with the mounting holes are formed in the positions of the transverse reinforcing ribs, which are opposite to the front and rear of the mounting holes, and the positions of the longitudinal reinforcing ribs, which are opposite to the front and rear of the mounting holes; the rear end of each torsion-resistant block respectively passes each mounting hole and fixedly inserts and establishes and insert and establish at the mounting groove that corresponds, vertical stiffening rib and horizontal stiffening rib not only realize the promotion to first backup pad rigidity with first backup pad welding, and with torsion-resistant block fixed connection, improved the joint strength of torsion-resistant block, play the effect of the triangular ribbed slab of torsion-resistant block, in addition, each horizontal stiffening rib and each vertical stiffening rib all set up the rear side at first backup pad, the position department of the installation department that each torsion-resistant block protrusion formed in the leading flank of first backup pad no longer need set up the triangular ribbed slab, avoided setting up the influence of triangular ribbed slab to gear box installation in installation department for lifting foundation can arrange compacter.
Drawings
FIG. 1 is a schematic view of a mounting structure of a conventional torsion block;
FIG. 2 is an isometric view of the lifting foundation for the offshore wind turbine mounting platform of the present invention with the back side of the support plate facing upward after the welding of the transverse and longitudinal stiffening ribs on the back side of the first support plate;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an isometric view of the lifting foundation for the offshore wind turbine mounting platform of the present invention with the back side of the support plate facing upward after the longitudinal stiffening ribs are welded to the back side of the first support plate;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B;
FIG. 6 is an isometric view of the front side of the support plate facing upward after the torsion block is welded;
FIG. 7 is a front view of the lifting foundation for the offshore wind turbine mounting platform of the present invention after installation of the gearbox and rack;
FIG. 8 is a front view of the lifting foundation for the offshore wind turbine mounting platform of the present invention after the second support structure and second support sleeve are installed;
FIG. 9 is a schematic structural view of a lifting foundation for an offshore wind turbine installation platform of the present invention after hiding a first support plate;
FIG. 10 is a schematic view of the structure of the rear side of the lifting foundation for the offshore wind power installation platform after hiding part of the third support plate;
FIG. 11 is a schematic structural view of a conformal structure between a first support sleeve and a second support sleeve;
in the figure, 100, a support plate, 200, a reinforcing rib, 300, a torsion block, 301, a mounting part, 400, a triangular rib, 500, a gear box, 600, a rack, 1, a first support plate, 11, a transverse reinforcing rib, 12, a longitudinal reinforcing rib, 13, a mounting hole, 14, a mounting groove, 15, a first process hole, 16, a second process hole, 17, a reinforcing partition plate, 171, a manhole, 21, a first left side plate, 22, a first right side plate, 23, a second support plate, 31, a first support sleeve, 311, a first round sleeve, 312, a second round sleeve, 32, a second support sleeve, 4, a second support structure, 41, a second left side plate, 42, a first middle plate, 43, a third support plate, 44, a partition plate, 5, a connecting plate, 6, a guide structure, 61, a first stop assembly, 62, and a second stop assembly.
Detailed Description
The following describes in further detail the specific embodiments of the invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the invention, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. It should be understood that the terms "first," "second," and the like are used in the invention to describe various information, but the information should not be limited to these terms, which are used only to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the invention.
As shown in fig. 2 to 11, a preferred embodiment of a lifting foundation for an offshore wind power installation platform of the present invention includes: a first support plate 1 and a plurality of torsion blocks 300, the rear side of the first support plate 1 being provided with a plurality of lateral reinforcing ribs 11 and a plurality of longitudinal reinforcing ribs 12 for reinforcing the support strength of the first support plate 1; a plurality of mounting holes 13 penetrating through the first support plate 1 from front to back are arranged at intervals, and each mounting hole 13 is positioned at the intersection of each transverse reinforcing rib 11 and each longitudinal reinforcing rib 12; mounting grooves 14 communicating with the mounting holes 13 are provided at positions of the lateral reinforcing ribs 11 and the mounting holes 13 which are opposite to each other in the front-rear direction and positions of the longitudinal reinforcing ribs 12 and the mounting holes 13 which are opposite to each other in the front-rear direction; the rear end of each torsion block 300 passes through the corresponding mounting hole 13 and is fixedly inserted into the corresponding mounting groove 14, specifically, the peripheral side of each torsion block 300 is welded with the hole wall of the corresponding mounting hole 13 and the corresponding slot wall of the mounting groove 14, that is, the rear end side wall of each torsion block 300 is fixed with each transverse reinforcing rib 11 and each longitudinal reinforcing rib 12, and the front end of each torsion block 300 protrudes out of the front side surface of the first support plate 1 to form a mounting part 301 for mounting the gear box 500 of the gear rack lifting system. The longitudinal reinforcing ribs 12 and the transverse reinforcing ribs 11 are welded with the first supporting plate 1 to improve the rigidity of the first supporting plate 1, are fixedly connected with the rear end of the torsion block 300, improve the connection strength of the torsion block 300, play a role of a triangular rib plate of the torsion block 300, in addition, the transverse reinforcing ribs 11 and the longitudinal reinforcing ribs 12 are arranged on the rear side of the first supporting plate 1, the triangular rib plate is not required to be arranged at the position of the installation part 301 of each torsion block 300, the influence of the triangular rib plate arranged at the installation part 301 on the installation of the gear box 500 is avoided, and the gear box 500 is more convenient to adjust in the process of reinstalling the gear box 500, so that the lifting foundation can be arranged more compactly.
In order to further improve the connection strength between the torsion-resistant blocks and each of the transverse reinforcing ribs 11 and each of the longitudinal reinforcing ribs 12, in this embodiment, each of the mounting grooves 14 has a groove structure, and the bottom wall of each of the mounting grooves 14 is welded to the corresponding rear end portion of the torsion-resistant block 300. In other embodiments of the present invention, the mounting slot 14 may be a through slot that extends through the front and rear.
In order to further improve the structural strength of the lifting foundation, in this embodiment, the lifting foundation for the offshore wind power installation platform includes: a first left side plate 21 disposed on the left side of the first support plate 1; a first right side plate 22 disposed on the right side of the first support plate 1; a second support plate 23 is disposed behind the first support plate 1, and the second support plate 23, the first right side plate 22, the first support plate 1, and the first left side plate 21 enclose a first support structure in a cylindrical shape. Specifically, the second support plate 23, the first right side plate 22, the first support plate 1 and the first left side plate 21 are welded in sequence, and each transverse reinforcing rib 11 and each longitudinal reinforcing rib 12 are welded in the cylinder cavity of the first support structure, so that not only is the structural strength of the lifting foundation ensured, but also the overall weight of the lifting foundation is lighter, and the steel consumption of the lifting foundation is reduced.
In this embodiment, as shown in fig. 8 and 10, in order to facilitate installation of the lifting system, a plurality of first supporting sleeves 31 for installing the gear box 500 are arranged in the first supporting structure at intervals; the rear side of the second support plate 23 is provided with a second support structure 4 extending backwards, and a second support sleeve 32 for installing a bearing seat of the rack gear lifting system is fixed at a position, which is opposite to the front and rear of each first support sleeve 31, of one end of the second support structure 4 away from the second support plate 23. Specifically, the strength of the first supporting sleeve 31 and the strength of the second supporting sleeve 32 are lower than the main structural strength of the lifting foundation, the toughness and the vibration resistance of the first supporting sleeve 31 and the toughness and the vibration resistance of the second supporting sleeve 32 are higher, vibration in the running process of the gear box and the bearing seat can be reduced, moreover, when the gear box and the bearing seat are overloaded, the failure part can be ensured to occur at the positions of the first supporting sleeve 31 and the second supporting sleeve 32, the maintenance is convenient, and the maintenance difficulty caused by the failure of the main structure of the lifting foundation is avoided.
In this embodiment, in order to ensure the guiding precision of the lifting base to the rack and pinion lifting system, an installation space for the rack 600 of the rack and pinion lifting system to pass through is provided in the middle of the second support structure 4, and guiding structures for guiding the rack 600 are provided on the upper part of the second support structure 4 and the lower part of the second support structure 4; in the running process of the rack, the guide structure needs to bear a larger acting force, in order to ensure the strength of the guide structure, in this embodiment, the upper part of the cylinder cavity of the first support structure and the lower part of the cylinder cavity of the first support structure are both provided with reinforcing partition plates 17, the arrangement density of the reinforcing partition plates 17 is greater than the arrangement density of the transverse reinforcing ribs 11 and the longitudinal reinforcing ribs 12, and the first support plate 1 and/or the second support plate 23 are provided with process holes for people to enter the cylinder cavity of the first support structure and weld each reinforcing partition plate 17. Specifically, in this embodiment, the process holes include a first process hole 15 disposed at the upper portion of the first support plate 1 and a second process hole 16 disposed at the lower portion of the first support plate 1, after the second support plate 23 is welded, an operator can enter the upper portion of the cylindrical cavity of the first support structure through the first process hole 15 and enter the lower portion of the cylindrical cavity of the first support structure through the second process hole 16, so that the rear ends of the reinforcing partition plates 17 are welded with the inner side of the second support plate 23, and the overall firmness of the lifting foundation is further improved.
Specifically, as shown in fig. 10, the second support structure 4 includes left and right support units arranged at a left-right interval, and the interval between the left and right support units forms an installation space through which the rack 600 passes. The left support unit includes a second left side plate 41 welded on the left side of the second support plate 23, a first middle plate 42 welded on the middle of the second support plate 23, and a third support plate 43 welded on the rear sides of the first middle plate 42 and the second left side wall, and a plurality of partitions 44 arranged at intervals up and down are welded between the second left side plate 41 and the first middle plate 42.
The construction method of the lifting foundation for the offshore wind power installation platform comprises the following steps of:
step S1, welding a transverse reinforcing rib 11 and a longitudinal reinforcing rib 12 on the rear side of the first supporting plate 1; in order to avoid deformation of the first support plate 1 during welding of the transverse reinforcing ribs 11 and the longitudinal reinforcing ribs 12, in this embodiment, after the rear side of the first support plate is placed on the jig frame downward, a code plate or a tooling is required to fix the periphery of the first support plate 1 with the ground ox, so as to reduce welding deformation. Specifically, stacking and sealing the tire at intervals of 300mm around the first supporting plate;
step S2, installing each torsion block 300 on the front side of the first supporting plate 1, welding the peripheral side of each torsion block 300 and the wall of each installation hole 13, and welding the peripheral side of each torsion block 300 and the wall of each installation groove 14; specifically, before the torsion block 300 is installed, the first support plate 1 needs to be turned over, so that the front side of the first support plate 1 is upwards arranged, and after the turning over, the first support plate 1 needs to be subjected to stacking and tire sealing again;
step S3, machining the mounting portion 301 of each torsion block 300, so that the shape and the position size of each mounting portion 301 meet the mounting position requirement of the gear box 500.
Specifically, since a large number of transverse reinforcing ribs 11 and longitudinal reinforcing ribs 12 are required to be welded on the first support plate 1, the first support plate 1 is easy to deform in the process of welding the transverse reinforcing ribs 11 and the longitudinal reinforcing ribs 12, and the matching precision of the gear and the rack is critical to the operation precision and the service life of the gear-rack lifting system, so whether the form and position tolerance of the torsion block 300 can be ensured to meet the design requirement is the key for the mounting success or failure of the lifting foundation, in the embodiment, the mounting part 301 leaves a machining allowance before the mounting, the transverse reinforcing ribs 11 and the longitudinal reinforcing ribs 12 are welded on the first support plate 1, the torsion block 300 is welded, and then the mounting part 301 is machined; in this embodiment, at least 10mm machining allowance is reserved on the peripheral side and the end of the mounting portion 301, and after the torsion block 300 is mounted, the form and position tolerance of the mounting portion 301 is machined in place through subsequent machining, so that the operation precision and the service life of the lifting foundation are ensured.
Wherein, after the step S1 and before the step S2, the method comprises the following steps:
step S11, welding a first left side plate 21, a first right side plate 22 and a second support plate 23;
step S12, welding a second support structure 4 on the rear side of the second support plate 23;
step S13, welding each first supporting sleeve 31 and each second supporting sleeve 32 at corresponding positions of the first supporting structure and the second supporting structure 4;
step S14, machining the inner hole of each first support sleeve 31 and the inner hole of each second support sleeve 32, so that the inner hole size of each first support sleeve 31, the inner hole center line position of each first support sleeve 31, the inner hole size of each second support sleeve 32 and the inner hole center line position of each second support sleeve 32 meet the installation position requirement of the gear box 500; in the step S2, each of the mounting portions 301 is processed with reference to the position of the center line of the inner hole of each of the first support sleeves 31 and the position of the center line of the inner hole of each of the second support sleeves 32.
Specifically, if the first support sleeve 31 and the second support sleeve 32 are machined in place, and then the first support sleeve 31 and the second support sleeve 32 are mounted on the first support structure and the second support structure 4, not only the first support plate 1 will deform, but also the first support sleeve 31 and the second support sleeve 32 will deform during the process of welding the first support sleeve 31 and the second support sleeve 32, in this embodiment, machining allowance is reserved for the inner radius, the outer radius and the height of the first support sleeve 31 and the second support sleeve 32, and after the first support sleeve 31 and the second support sleeve 32 are welded, the first support sleeve 31 and the second support sleeve 32 are machined, so that the inner axis position of the first support sleeve 31, the inner radius of the second support sleeve 32 and the inner radius of the second support sleeve 32 all meet the design requirements, the mounting accuracy of the gear box 500 and the bearing seat is ensured, and the relation between the inner hole position of the first support sleeve 31 and the inner hole position of the second support sleeve 32 is ensured to be the reference position 300 when the mounting part 301 is machined.
In order to avoid an excessive misalignment between the first support sleeve 31 and the second support sleeve 32 when the first support sleeve 31 and the second support sleeve 32 are welded, the step S13 of welding each of the first support sleeve 31 and each of the second support sleeve 32 at corresponding positions of the first support structure and the second support structure 4 includes:
a shape retaining mechanism is welded between each first support sleeve 31 and each corresponding second support sleeve 32, and the shape retaining mechanism is used for connecting each first support sleeve 31 and each corresponding second support sleeve 32 into an integral rigid structure, and keeping each first support sleeve 31 and each corresponding second support sleeve 32 in coaxial interval arrangement. Specifically, the shape-retaining structure may be a plurality of connection plates 5 circumferentially spaced around the first support sleeve, and an end of each connection plate 5 remote from the first support sleeve 31 is welded to the second support sleeve 32. Further, in order to avoid excessive deformation of the first support sleeve 31 and the second support sleeve 32, in this embodiment, cross-shaped frames are welded in the inner holes of the first support sleeve 31 and the inner holes of the second support sleeve 32, after the welding of the first support sleeve 31 and the second support sleeve 32 is completed, the cross-shaped frames are cut off, and then machining is performed on the inner holes of the first support sleeve 31 and the inner holes of the second support sleeve 32.
Further, in this embodiment, the first supporting sleeve 31 includes a first sleeve 311 and a second sleeve 312, the end of the first sleeve 311 and the end of the second sleeve 312 are butt welded to form the first supporting sleeve 31, the height of the first sleeve 311 is 32mm, the height of the second sleeve 312 is 70mm, the machining allowance of the first sleeve 311 in the outer circle radial direction is 2mm, the machining allowance of the first sleeve 311 in the inner circle radial direction is 10mm, the machining allowance of the second sleeve 312 in the outer circle radial direction is 12mm, the machining allowance of the second sleeve 312 in the inner circle radial direction is 2mm, the machining allowance of the second sleeve 312 in the thickness direction is 10mm, the machining allowance in the thickness direction is 15mm, the ocean punch mark is made at the quarter point of the first sleeve 311 and the quarter point of the second sleeve 312 before the first sleeve 311 and the second sleeve 312 are butt welded, and the circle center alignment condition is checked by utilizing the ocean punch point during the butt welding of the first sleeve 311 and the second sleeve.
In this embodiment, after the step S11 and before the step S12, the method further includes:
step S111, entering the upper part of the cylinder cavity of the first support structure and the lower part of the cylinder cavity of the first support structure through the process holes, and respectively welding the reinforcing partition 17 at the upper part of the cylinder cavity of the first support structure and the reinforcing partition 17 at the lower part of the cylinder cavity of the first support structure. Further, the middle portion of each reinforcing partition 17 is provided with a manhole 171 through which a worker passes, so that the worker can weld double-sided welds of each reinforcing partition 17 through the manhole 171.
In this embodiment, a guiding structure 6 for guiding the rack 600 is disposed on the upper portion of the second supporting structure 4 and the lower portion of the second supporting structure 4, each guiding structure 6 includes a first stopping component 61 and a second stopping component 62 that are oppositely disposed at left and right intervals, a guiding space that communicates with the installation space is formed between the first stopping component 61 and the second stopping component 62, and each of the first stopping component 61 and the second stopping component 62 includes a wear plate that is disposed close to the guiding space and a backing plate that is disposed away from the guiding space and is connected with the second supporting structure; the step S3 further includes: each of the backing plates is mounted on the second support structure 4, and one side of each of the backing plates adjacent to the guide space is machined so that after each of the wear plates is mounted on the corresponding backing plate, the position of each of the guide spaces matches the position of the rack 600, and the width of the guide space matches the width of the rack 600. Hardness of backing plate is crossed at the bottom, and the machining of being convenient for through carrying out machining to the backing plate, can make the wearing plate install the back with the depth of parallelism of rack satisfy the design requirement.
In summary, a preferred embodiment of the present invention, an elevating foundation for an offshore wind power installation platform, includes: a first support plate 1 and a plurality of torsion blocks 300, the rear side of the first support plate 1 being provided with a plurality of lateral reinforcing ribs 11 and a plurality of longitudinal reinforcing ribs 12 for reinforcing the support strength of the first support plate 1; a plurality of mounting holes 13 penetrating through the first support plate 1 from front to back are arranged at intervals, and each mounting hole 13 is positioned at the intersection of each transverse reinforcing rib 11 and each longitudinal reinforcing rib 12; mounting grooves 14 communicating with the mounting holes 13 are provided at positions of the lateral reinforcing ribs 11 and the mounting holes 13 which are opposite to each other in the front-rear direction and positions of the longitudinal reinforcing ribs 12 and the mounting holes 13 which are opposite to each other in the front-rear direction; the rear end of each torsion block 300 passes through the corresponding mounting hole 13 and is inserted into the corresponding mounting groove 14, the peripheral side of each torsion block 300 is welded with the wall of the corresponding mounting hole 13 and the wall of the corresponding mounting groove 14, and the front end of each torsion block 300 protrudes from the front side surface of the first support plate 1 to form a mounting part 301 for mounting the gear box 500 of the gear rack lifting system. The longitudinal reinforcing ribs 12 and the transverse reinforcing ribs 11 are welded with the first supporting plate 1 to improve the rigidity of the first supporting plate 1, are welded with the rear end of the torsion block 300 to improve the connection strength of the torsion block 300, and play a role of triangular ribs of the torsion block 300.
While the foregoing is directed to the preferred embodiments of the present invention, it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and substitutions should also be considered to be within the scope of the present invention.
Claims (10)
1. The utility model provides a marine wind-powered electricity generation is lifting foundation for mounting platform which characterized in that includes:
a first support plate (1), wherein a plurality of transverse reinforcing ribs (11) and a plurality of longitudinal reinforcing ribs (12) are arranged on the rear side of the first support plate (1); a plurality of mounting holes (13) which are positioned at the intersections of the transverse reinforcing ribs (11) and the longitudinal reinforcing ribs (12) and are penetrated in the front-back direction are arranged on the first supporting plate (1) at intervals; mounting grooves (14) communicated with the mounting holes (13) are formed in the positions of the transverse reinforcing ribs (11) opposite to the front and rear of the mounting holes (13) and the positions of the longitudinal reinforcing ribs (12) opposite to the front and rear of the mounting holes (13);
the rear ends of the torsion blocks (300) respectively penetrate through the mounting holes (13) and are fixedly inserted into the mounting grooves (14) corresponding to the mounting holes (13), the rear end side walls of the torsion blocks (300) are fixed with the transverse reinforcing ribs (11) and the longitudinal reinforcing ribs (12), and the front ends of the torsion blocks (300) protrude out of the front side surface of the first supporting plate (1) to form a mounting part (301) for mounting a gear box (500) of the gear rack lifting system.
2. The lifting foundation for a wind power installation platform at sea according to claim 1, characterized in that each installation groove (14) has a groove structure, and the bottom wall of each installation groove (14) is welded with the rear end of the corresponding torsion block (300).
3. The lifting foundation for an offshore wind power installation platform according to claim 1, wherein the lifting foundation for an offshore wind power installation platform comprises:
a first left side plate (21) arranged on the left side of the first support plate (1);
a first right side plate (22) arranged on the right side of the first support plate (1);
the second support plate (23) is arranged behind the first support plate (1), and the second support plate (23), the first right side plate (22), the first support plate (1) and the first left side plate (21) are enclosed to form a cylindrical first support structure.
4. A lifting foundation for a wind power installation platform at sea according to claim 3, characterized in that a plurality of first supporting sleeves (31) for installing the gear box (500) are arranged in the first supporting structure at intervals;
the rear side of the second supporting plate (23) is provided with a second supporting structure (4) extending backwards, and a second supporting sleeve (32) for installing a bearing seat of the gear rack lifting system is fixed at the position, which is opposite to the front and rear of each first supporting sleeve (31), of one end, far away from the second supporting plate (23), of the second supporting structure (4).
5. The lifting foundation for an offshore wind power installation platform according to claim 4, wherein an installation space for a rack of the rack-and-pinion lifting system to pass through is formed in the middle of the second supporting structure (4), and a guide structure (6) for guiding the rack is formed at the upper part of the second supporting structure (4) and the lower part of the second supporting structure (4);
the upper part of the cylinder cavity of the first supporting structure and the lower part of the cylinder cavity of the first supporting structure are respectively provided with a reinforcing baffle plate (17), and the first supporting plate (1) and/or the second supporting plate (23) are/is provided with process holes for personnel to enter the cylinder cavity and weld each reinforcing baffle plate (17).
6. A method of constructing a lifting foundation for an offshore wind power installation platform according to any one of claims 1 to 5, comprising the steps of:
step S1, welding a transverse reinforcing rib (11) and a longitudinal reinforcing rib (12) on the rear side of a first supporting plate (1);
s2, installing each torsion block (300) on the front side of the first supporting plate (1), welding the peripheral side of each torsion block (300) and the hole wall of each installation hole (13), and welding the peripheral side of each torsion block (300) and the groove wall of each installation groove (14);
and S3, machining the mounting parts (301) of the torsion blocks (300) so that the shape and the position size of each mounting part (301) meet the mounting position requirement of the gear box (500).
7. The method for constructing a lifting foundation for a wind power installation platform at sea according to claim 6, wherein after step S1 and before step S2, the method comprises:
s11, welding a first left side plate (21), a first right side plate (22) and a second support plate (23);
step S12, welding a second support structure (4) on the rear side of the second support plate (23);
s13, welding each first supporting sleeve (31) and each second supporting sleeve (32) at corresponding positions of the first supporting structure and the second supporting structure (4);
step S14, machining the inner hole of each first supporting sleeve (31) and the inner hole of each second supporting sleeve (32) so that the inner hole size of each first supporting sleeve (31), the inner hole center line position of each first supporting sleeve (31), the inner hole size of each second supporting sleeve (32) and the inner hole center line position of each second supporting sleeve (32) meet the installation position requirement of the gear box (500);
in the step S2, each of the mounting portions 301 is processed with reference to the position of the center line of the inner hole of each of the first support sleeves 31 and the position of the center line of the inner hole of each of the second support sleeves 32.
8. The method of constructing a lifting foundation for a offshore wind power installation platform according to claim 7, wherein welding each of the first support sleeve (31) and each of the second support sleeve (32) at corresponding positions of the first support structure and the second support structure (4) in step S13 includes:
and a shape retaining mechanism is welded between each first support sleeve (31) and each corresponding second support sleeve (32), and the shape retaining mechanism is used for connecting each first support sleeve (31) and each corresponding second support sleeve (32) into an integral rigid structure and keeping each first support sleeve (31) and each corresponding second support sleeve (32) in coaxial interval arrangement.
9. The method for constructing a lifting foundation for a offshore wind power installation platform according to claim 7, wherein after the step S11 and before the step S12, further comprising:
and S111, entering the upper part of the cylinder cavity of the first support structure and the lower part of the cylinder cavity of the first support structure through process holes, and respectively welding the reinforcing partition plate (17) at the upper part of the cylinder cavity of the first support structure and the reinforcing partition plate (17) at the lower part of the cylinder cavity of the first support structure.
10. The construction method of a lifting foundation for an offshore wind power installation platform according to claim 7, wherein the upper part of the second supporting structure (4) and the lower part of the second supporting structure (4) are respectively provided with a guide structure (6) for guiding racks of a rack-and-pinion lifting system, each guide structure (6) comprises a first stop assembly (61) and a second stop assembly (62) which are oppositely arranged at left and right intervals, a guide space communicated with an installation space is formed between the first stop assembly (61) and the second stop assembly (62), and each first stop assembly (61) and the second stop assembly (62) comprises a wear plate which is arranged close to the guide space and a backing plate which is far away from the guide space and is connected with the second supporting structure (4); the step S3 further includes:
and installing each backing plate on the second supporting structure (4), and machining one side, close to the guide space, of each backing plate so that after each wear-resisting plate is installed on the corresponding backing plate, the position of each guide space is matched with the position of the rack, and the width of each guide space is matched with the width of the rack.
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| CN202311154388.6A CN116892199B (en) | 2023-09-08 | 2023-09-08 | Lifting foundation for offshore wind power installation platform and construction method thereof |
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| BE758930A (en) * | 1969-11-14 | 1971-04-16 | Armco Steel Corp | Structure supported by pylons, installed offshore, with lifting devices |
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| CN105882891A (en) * | 2015-09-18 | 2016-08-24 | 上海江南长兴重工有限责任公司 | Section construction method of hatch coaming and ship side |
| CN112761128A (en) * | 2021-01-22 | 2021-05-07 | 天津大学 | Offshore wind power double-body installation platform and cylindrical foundation installation method |
| CN115771595A (en) * | 2022-12-20 | 2023-03-10 | 中电建海上风电工程有限公司 | A new semi-submersible lifting platform and offshore wind power hoisting method |
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|---|---|---|---|---|
| BE758930A (en) * | 1969-11-14 | 1971-04-16 | Armco Steel Corp | Structure supported by pylons, installed offshore, with lifting devices |
| CN202344234U (en) * | 2011-12-13 | 2012-07-25 | 纽威数控装备（苏州）有限公司 | High-rigidity compact machine tool base structure |
| CN105882891A (en) * | 2015-09-18 | 2016-08-24 | 上海江南长兴重工有限责任公司 | Section construction method of hatch coaming and ship side |
| CN112761128A (en) * | 2021-01-22 | 2021-05-07 | 天津大学 | Offshore wind power double-body installation platform and cylindrical foundation installation method |
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| CN116892199A (en) | 2023-10-17 |
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