CN116605766B - Impeller lifting mechanism for wind power construction and wind power construction method - Google Patents
Impeller lifting mechanism for wind power construction and wind power construction method Download PDFInfo
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- CN116605766B CN116605766B CN202310613984.XA CN202310613984A CN116605766B CN 116605766 B CN116605766 B CN 116605766B CN 202310613984 A CN202310613984 A CN 202310613984A CN 116605766 B CN116605766 B CN 116605766B
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- guide rail
- lifting
- binding
- impeller
- push rod
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- 230000007246 mechanism Effects 0.000 title claims abstract description 193
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000010248 power generation Methods 0.000 claims description 11
- 230000008275 binding mechanism Effects 0.000 claims description 10
- 230000000670 limiting effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000036544 posture Effects 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
- 230000009471 action Effects 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
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- 230000036961 partial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/108—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means for lifting parts of wind turbines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/122—Sling or load protectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/18—Band-type slings
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- 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
- F03D13/40—Arrangements or methods specially adapted for transporting wind motor components
-
- 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
Abstract
In wind power construction, in the process of hoisting an impeller mechanism (comprising an assembled hub and three blades for circumferential measurement), hoisting work is usually completed through two cranes, and the cost is high.
Description
Technical Field
The invention belongs to the field of wind power, belongs to 6.2.5 wind power generation technical service under 6.2 wind energy industry in 6 new energy industry of strategic and emerging industry catalogue, and particularly relates to wind power plant design and construction service, in particular to an impeller lifting mechanism for wind power construction and a wind power construction method.
Background
The crane is used for hoisting cargoes in a specific range, in the wind power construction, in the process of hoisting the impeller mechanism (comprising an assembled hub and three blades which are measured circumferentially), the hoisting work is usually completed through two cranes, as shown in fig. 6-7, the hoisting mechanism of the main crane is bound with the positions, close to the root parts, of the two blades of the impeller mechanism through binding belts, the hoisting mechanism of the auxiliary crane is bound with the third blade through binding belts, the impeller mechanism is hoisted horizontally (horizontal hoisting is because if hoisting is performed under a non-horizontal condition, the damage is caused when one of the blades is towed to the ground, the service life is greatly reduced), after the hoisting is completed to a certain height, the main crane is controlled to hoist continuously, the auxiliary crane does not work any more, so that the impeller mechanism is gradually vertical to be installed, stable hoisting is completed through the cooperation of the two cranes, and the impeller mechanism is converted from horizontal to vertical postures.
Disclosure of Invention
In order to solve the problems, the invention provides an impeller lifting mechanism for wind power construction and a wind power construction method.
The object of the invention is achieved in the following way: the utility model provides an impeller hoisting mechanism of wind-powered electricity generation construction, includes hoisting mechanism 11, be provided with the ligature mechanism that is used for fixed impeller on the hoisting mechanism 11, still be provided with ligature landing mechanism 7 on the hoisting mechanism 11, ligature landing mechanism connects second ligature mechanism.
Further, the binding dropping mechanism 7 comprises a hinge seat 71, the hinge seat 71 is fixedly connected with the lifting mechanism 11, a sprocket 72 is rotatably connected in the hinge seat 71 through a rotating shaft, the sprocket 72 is meshed with a chain 73, one end of the chain 73 is fixedly connected with a second binding mechanism, the other end of the chain 73 is fixedly connected with a limiting block 74, and the binding dropping mechanism 7 is further provided with a sprocket locking mechanism 8 and a sprocket braking mechanism 9.
Further, the sprocket locking mechanism 8 includes a first electric push rod 81, the first electric push rod 81 is fixedly connected with the hinge seat 71, a first push rod 82 of the first electric push rod 81 penetrates through the hinge seat 71 and extends into the sprocket 72 from one side, and a locking hole matched with the first push rod 82 is formed in one side of the sprocket 72.
Further, the sprocket braking mechanism 9 includes a braking mounting seat 91, the braking mounting seat 91 is fixedly connected with the lifting mechanism 11, two ends of the braking mounting seat 91 are respectively hinged to the bottom ends of one clamp rod 92, two clamp rods 92 are respectively located at two sides of the sprocket 72, the top end of one clamp rod 92 is hinged to the cylinder body of a second electric push rod 93, the second push rod 931 of the second electric push rod 93 is hinged to the top end of another clamp rod 92, and two clamp rods 92 are respectively provided with a brake block 94 inwards.
Further, the binding mechanism comprises two binding belts 111, one end of each binding belt 111 is fixedly connected with the lifting mechanism 11, the second binding mechanism comprises a connecting block fixedly connected with the chain 73, and the connecting block is fixedly connected with the second binding belt 731.
The wind power construction method comprising the impeller lifting mechanism comprises lifting equipment, wherein the lifting mechanism 11 is arranged on the lifting equipment, the wind power construction method further comprises a wind power generation equipment component, the wind power generation equipment component comprises a tower barrel, a cabin, a hub and blades, and the method comprises the following steps:
s1, completing foundation construction and installing a foundation ring;
s2, hoisting tower bottom equipment on the top of the foundation ring through hoisting equipment, and installing and debugging;
s3, hoisting a tower section on the top of the foundation ring, installing and fixing the tower section with the foundation ring, and then hoisting a plurality of tower sections in sequence to form a tower body;
s4, hoisting the top of the cabin Yu Dashen, and installing, fixing and debugging the cabin and the top of the tower body;
s5, preassembling the hub and the blades to form an impeller mechanism;
s6, binding and fixing two binding belts 111 of the lifting mechanism 11 with the root parts of a first blade and a second blade of the impeller mechanism respectively, and binding and fixing a second binding belt 731 with a third blade;
s7, lifting the lifting mechanism 11 through lifting equipment to enable the impeller mechanism to be suspended, driving the chain to pull up the third blade through the limiting block 74 until the impeller mechanism is horizontal, controlling the first push rod 82 of the first electric push rod 81 to extend and be matched with the chain wheel 72 to lock, and simultaneously controlling the second push rod 931 of the second electric push rod 93 to retract to enable the two side brake blocks 94 to lock the chain wheel 72 inwards;
s8, lifting the lifting mechanism 11 through lifting equipment, controlling the first push rod 82 of the first electric push rod 81 to retract after the lifting mechanism reaches a certain height, and unlocking the chain wheel 72, so that the lifting mechanism 11 drives the first blade and the second blade to lift, and simultaneously, the third blade relatively descends, and the impeller mechanism is gradually vertical;
and S9, rotating the engine room to a proper position, and assembling the engine room and the impeller mechanism.
Further, adding the step S5.1, wherein a guide rail along the lifting direction is fixedly connected to one side of the tower body; one side of the lifting mechanism 11 is fixedly connected with one end of a connecting rod, the other end of the connecting rod is fixedly connected with a guide block matched with the guide rail, and the guide block is matched with the guide rail to form a guide rail pair.
Compared with the prior art, the invention has the advantages that the binding dropping mechanism is further arranged on the lifting mechanism to realize the dropping action aiming at the third blade of the impeller mechanism, so that one crane can finish lifting and finish the posture conversion of the impeller mechanism from horizontal to vertical, and the cost is saved.
Drawings
FIG. 1 is a schematic diagram of a second tower being lifted by a lifting apparatus;
FIG. 2 is a schematic diagram of the structure of the lifting device as it descends into a second tower;
FIG. 3 is a schematic view of the structure of the crane cabin when the lifting device lifts the nacelle after the tower body is assembled;
fig. 4 is an enlarged view at a in fig. 3;
FIG. 5 is a schematic view of the structure of the lifting device as it descends the nacelle;
FIG. 6 is a schematic view of the construction of the lifting apparatus when lifting the impeller mechanism;
FIG. 7 is a schematic view of the impeller mechanism immediately before lifting is completed and ready for assembly;
FIG. 8 is a schematic view of a hub and blade separately lifted and assembled;
FIG. 9 is a cross-sectional top view at the guide mechanism;
FIG. 10 is a front cross-sectional view of the guide mechanism;
FIG. 11 is a schematic structural view of an impeller lifting mechanism;
FIG. 12 is a partial cross-sectional view of FIG. 11;
FIG. 13 is a section A-A of FIG. 12;
FIG. 14 is a section B-B of FIG. 12;
FIG. 15 is a schematic view of the operation of the impeller mechanism using the impeller lifting mechanism to lift the impeller;
FIG. 16 is a schematic illustration of the last operation of the lifting of the impeller mechanism using the impeller lifting mechanism;
figure 17 is an embodiment of a weld between a rail and a tower.
Wherein, lifting device 1, hoisting mechanism 11, ligature area 111, connecting rod 112, guide block 113, tower section of thick bamboo 2, cabin 3, wheel hub 31, blade 32, guide rail 4, hinge 41, movable support rod 42, extension guide rail 5, auxiliary lifting device 6, ligature landing mechanism 7, articulated seat 71, sprocket 72, chain 73, second ligature area 731, stopper 74, sprocket locking mechanism 8, first electric putter 81, first putter 82, sprocket braking mechanism 9, brake mount 91, clamp lever 92, second electric putter 93, second putter 931, brake block 94.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used for convenience of description and for simplifying the description only with respect to the orientation or positional relationship shown in the drawings, and do not indicate or imply that the device or element 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.
As shown in fig. 1-9, a lifting structure of wind power generation equipment comprises lifting equipment 1, wherein lifting mechanisms 11 are arranged on the lifting equipment 1, a tower body of the wind power generation equipment is fixedly connected with the ground, and guide mechanisms are arranged between the tower body and the lifting mechanisms 11, so that the lifting mechanisms 11 can lift along the tower body according to the guide mechanisms.
By arranging the guide mechanism between the tower body and the lifting mechanism 11, the lifting mechanism 11 can lift along the tower body according to the guide mechanism, so that the lifting mechanism 11 can be stabilized depending on the tower body in the lifting process.
Further, the guiding mechanism comprises a guide rail 4 fixedly connected with the tower body, the guide rail 4 is arranged along the lifting direction, a guiding block 113 is slidably connected in the guide rail 4, the guiding block 113 is fixedly connected with one end of a connecting rod 112, and the other end of the connecting rod 112 is fixedly connected with the lifting mechanism 11.
Preferably, the guide rail 4 is vertical or is inclined along the inclination of the tower body on the basis of vertical arrangement; if necessary, reinforcing ribs can be arranged between the guide rail 4 and the tower body; the guide rail 4 is open at a side remote from the tower body, from which opening a connecting rod 112 protrudes, as shown in fig. 9.
Further, the guide rail 4 is a T-shaped guide rail 4.
Further, the top of the guide rail 4 is connected with one end of an extension guide rail 5, and the extension guide rail 5 is higher than the top end of the tower body; the elongate guide rail 5 provides a sufficiently long guiding stability when used to hoist the nacelle 3, hub 31, blade 32.
Further, the extension guide rail 5 is hinged with the guide rail 4, and a detachable movable support rod 42 is arranged between the extension guide rail 5 and the guide rail 4; in detail, as shown in fig. 4, the outward opening of the extension guide rail 5 is hinged to the guide rail 4 through a hinge 41, so that the extension guide rail 5 can rotate in an outward (far away from the tower body) direction, and after the nacelle 3, the hub 31 and the blades 32 are hoisted to a sufficient height, the extension guide rail 5 is rotated away to prevent interference from subsequent work.
Preferably, the top end of the guide rail 4 is slightly lower than the top end (more than or equal to 500 mm) of the tower body, so that the guide rail 5 of the extension section can not interfere with the horizontal plane of the tower top after being rotated away.
The guide rail 4 and the guide block 113 may be just a common sliding block and be matched with a sliding rail, but more preferably, as shown in fig. 9-10, the side of the guide block 113 is provided with a ball assembly 114, the ball assembly 114 comprises a ball sleeve 1142, the ball sleeve 1142 is internally covered with a ball 1141, the periphery of the ball sleeve 1142 is provided with external threads, the side of the guide block is provided with a mounting groove, the mounting groove is internally provided with internal threads matched with the external threads, the ball sleeve 1142 is fixedly connected with the guide block 113 through the external threads, the outer side of the ball sleeve 1142 is provided with an opening, and the ball 1141 extends outwards through the opening part.
In detail, the inner cavity of one side of the ball sleeve 1142 with the opening is arc-shaped matched with the ball 1141, the ball 1141 is exposed outwards from the opening and is not more than half of the ball body, the opposite side of the ball sleeve 1142 with the opening is provided with a through hole for the whole ball 1141 to pass through, the ball 1141 is firstly put into the ball sleeve 1142 from the through hole during installation, then the ball sleeve 1142 and the mounting groove are fixedly connected through internal and external threads, the ball 1141 is ejected from the opening through the preset thickness of the mounting groove and the thickness of the ball sleeve 1142, so as to extend out of the side of the guide block 113, and a structure similar to a bearing is formed, so that the guide block 113 can slide in the guide rail 4 more smoothly, wherein the gaps among the ball 1141, the ball sleeve 1142 and the mounting groove can be used for storing oil (lubrication during rolling), and the ball assembly 114 is preferably arranged at two sides of the guide block 113, and the front end and the rear end of the upper part and the lower part of each side are respectively provided with eight.
In combination with the above structure, a lifting construction method for wind power generation equipment is provided, which comprises lifting equipment 1, lifting mechanism 11 is arranged on lifting equipment 1, lifting mechanism 11 bottom is fixed, lifting and fixing mechanism is also provided, and wind power generation equipment component is also provided, and comprises tower 2, cabin 3, hub 31 and blade 32, and the method comprises the following steps:
s1, completing foundation construction and installing a foundation ring;
in detail, the construction method in the step S1 sequentially comprises the steps of material conveying and entering, positioning and paying-off, soil digging, cushion layer concrete pouring, pre-buried foundation ring supporting steel plates, paying-off, foundation ring foundation bolt supporting pieces, foundation ring installation, steel bar binding, pre-buried power cable pipes, formwork supporting, foundation concrete pouring, formwork removing and earthwork backfilling.
S2, hoisting tower bottom equipment (including but not limited to a frequency converter and a tower bottom control cabinet) on the top of the foundation ring through hoisting equipment 1, and performing the works of installation, debugging, wiring and the like;
s3, assembling a hoisting fixing mechanism and a first tower section 2, installing a traction rope on the first tower section 2, hoisting the first tower section 2 above a foundation ring through a hoisting device 1, adjusting the position through the traction rope, controlling the first tower section 2 to slowly drop through the hoisting device 1, enabling the first tower section 2 to be matched with the foundation ring (enabling a flange at the bottom of the first tower section 2 to be in butt joint with a foundation ring flange and be fixed with bolts on the foundation ring flange), and then installing and fixing the first tower section 2 and the foundation ring to form a tower body;
s4, fixedly connecting a guide rail 4 along the lifting direction on one side of the first tower section 2; one side of the lifting mechanism 11 is fixedly connected with one end of a connecting rod 112, and the other end of the connecting rod 112 is fixedly connected with a guide block 113 matched with the guide rail 4;
in the above step S4, the "fixed connection" may be welding, but is preferably bolt-fixed, as shown in fig. 9, specifically, a flange mounting surface with a screw hole is prefabricated on one side of the tower 2, and flange surfaces between the tower 2 are pre-aligned, the pre-alignment is based on the design of the tower 2 itself, when components such as a ladder stand and an inner flange plate in the tower 2 need to be considered for alignment at the beginning of the design, so the alignment problem of the flange mounting surface is considered at the same time, a flange mounting plate is prefabricated on one side of the guide rail 4, which is fixed in a matching manner with the tower, and is in a strip shape, two rows of screw holes are provided along the vertical direction, two sides of the guide rail 4 are respectively fixed with a flange mounting plate, one side of the flange mounting plate is welded with the guide rail 4 or integrally formed, when the guide rail 4 is attached to the tower 2, the guide rail 4 is fixedly connected with the tower 2 through the flange through the bolts, the scheme has higher cost, but is more stable, and the guide rail 4 does not need to be removed after the hoisting is completed, and can be used continuously in the future for replacing the blade or nacelle.
Of course, the welding can be performed between the rear side of the guide rail and the tower body directly, but more preferably, as shown in fig. 17, one end of the steel bar is welded at the rear side of the guide rail in an array crossing manner, the tower body is welded at the other end of the steel bar, so that the splayed welding is formed, and the welding mode can be directly cut and removed after the welding is completed.
S5, as shown in FIG. 1, lifting the lifting mechanism 11, adjusting the position, enabling the guide block 113 to be matched with the guide rail 4 and enter from the top of the guide rail 4, then lowering the lifting mechanism 11, enabling the lifting fixing mechanism to be assembled with the nth section tower barrel 2, and installing a traction rope on the nth section tower barrel 2;
s6, as shown in FIG. 2, lifting the lifting mechanism 11 until the guide block 113 is separated from the guide rail 4 and the nth section tower barrel 2 is higher than the current tower body, controlling the position to be matched with the traction rope through the lifting equipment 1, slowly lowering the nth section tower barrel 2 to the top of the tower body, and installing and fixing the nth section tower barrel 2 between the tower bodies;
s7, fixedly connecting a guide rail 4 along the lifting direction at one side of the nth section tower drum 2, and butting the guide rail 4 with the guide rail 4 at the side of the lower tower body;
preferably, as shown in fig. 1, a guide rail 4 with the length equal to the sum of the heights of the first section tower 2 and the second section tower 2 is fixedly connected to one side of the first section tower 2, and the second section tower 2 is hoisted, which considers the distance between the lifting mechanism 11 and the tower 2 due to the binding belt 111 so as to provide long enough guiding stability; after the second tower section 2 is installed in place, a guide rail 4 with the length equal to the height of the third tower section 2 is fixed on the top of the existing guide rail 4, then the third tower section 2 is hoisted, and the like.
S8, repeating the steps S5-S7 until a complete tower body is formed;
s9, lifting the lifting mechanism 11, adjusting the position, enabling the guide block 113 to be matched with the guide rail 4 and enter from the top of the guide rail 4, and then lowering the lifting mechanism 11, so that the hoisting fixing mechanism is assembled with the part X; lifting mechanism 11 is lifted until guide block 113 is disengaged from guide rail 4 and part X reaches the proper position, and part X is installed.
S10, repeating the step S9 for a plurality of times until the wind power generation equipment is assembled, wherein the part X is respectively a cabin 3, a hub 31 and blades 32 or an impeller mechanism formed by the hub 31 and the blades 32.
Preferably, as shown in fig. 1 and 2, a notch 43 may be formed at a position near the bottom of the guide rail 4, where the height of the notch 43 is greater than the height of the guide block 113, so that the guide block 113 is not limited to enter from the top of the guide rail 4 to achieve cooperation.
I.e. for the lifting of nacelle 3, hub 31, blades 32, the same logic as for the lifting of tower 2 can be used, but more preferably, two embodiments are presented here to cope with different conditions:
first, S8.1 is added between S8 and S9: at the top of the guide rail 4, the bottom end of the extension guide rail 5 is hinged, the extension guide rail 5 can rotate along the outward direction, a detachable movable support rod 42 is arranged between the extension guide rail 5 and the guide rail 4 to provide enough long guiding stability, and after the nacelle 3, the hub 31 and the blades 32 are hoisted to a sufficient height, the extension guide rail 5 is rotated away to prevent interference from subsequent work.
The length of the extension guide rail 5 is preferably such that, in the lifting operation of the nacelle 3, the hub 31 and the blades 32, the nacelle 3, the hub 31 and the blades 32 just reach the mounting plane (without considering mounting errors due to mechanical structure) when the guide blocks 113 just disengage from the extension guide rail 5.
The pivoting away and pivoting back of the extension rail 5 can be effected in dependence on the lifting device 1.
As a first embodiment, after the nacelle 3 is in place, the hub 31 and the blades 32 are assembled into a complete impeller mechanism and then integrally lifted:
s9 and S10 are decomposed into:
s9.1, as shown in figures 3-5, lifting the lifting mechanism 11, and adjusting the position so that the guide blocks 113 are matched with the guide rails 4 and enter from the top of the extension guide rails 5, and then lowering the lifting mechanism 11 so that the hoisting fixing mechanism is assembled with the cabin 3; lifting the lifting mechanism 11 until the guide block 113 is separated from the extension guide rail 5 and reaches a proper position, removing the movable supporting rod 42, enabling the extension guide rail 5 to rotate outwards to prevent the extension guide rail 5 from interfering, adjusting the position of the cabin 3 and assembling with the top of the tower body, after the assembly is completed, rotating the extension guide rail 5 back, rotating the cabin 3 to enable the cabin 3 not to interfere with the extension guide rail 5 (particularly, as shown in fig. 6, the cabin 3 laterally abuts against or corresponds to the back of the extension guide rail 5), and installing the movable supporting rod 42 back to enable the extension guide rail 5 to be fixed;
s9.2, as shown in fig. 6-7, the hub 31 and the blades 32 are preassembled to form an impeller mechanism; lifting the lifting mechanism 11, adjusting the position so that the guide blocks 113 are matched with the guide rail 4 and enter from the top of the extension guide rail 5, and then lowering the lifting mechanism 11 so that the lifting fixing mechanism is assembled with the impeller mechanism; lifting mechanism 11 is lifted until guide block 113 is disengaged from extension guide rail 5 and reaches a proper position, movable support rod 42 is detached, extension guide rail 5 is rotated outwards to prevent interference, the position of nacelle 3 is rotated to enable the head of nacelle 3 to correspond to the joint of the impeller mechanism, and the position of the impeller mechanism is adjusted and assembled with nacelle 3.
In S9.2, in detail, the lifting mechanism 11 driven by the main lifting device 1 should be bound with the root parts of two blades 32 respectively through the binding belts 111, two blades 32 are located at two sides of the tower body and two sides of the lifting mechanism 11 respectively, then the auxiliary lifting device 6 is introduced, the third blade 32 is bound with the auxiliary lifting device 6 to be close to the tip part, the main lifting device 1 is lifted in advance, the impeller mechanism is pulled up to be in the state shown in fig. 7, and the impeller mechanism is lifted further to be vertical.
As a second embodiment, after the nacelle 3 is in place, the hub 31 and the blades 32 are sequentially lifted and assembled:
s9 and S10 are decomposed into:
s9.1, lifting the lifting mechanism 11, adjusting the position so that the guide blocks 113 are matched with the guide rail 4 and enter from the top of the extension guide rail 5, and then lowering the lifting mechanism 11 so that the hoisting fixing mechanism is assembled with the cabin 3; lifting the lifting mechanism 11 until the guide block 113 is separated from the extension guide rail 5 and reaches a proper position, detaching the movable support rod 42 to enable the extension guide rail 5 to rotate outwards, adjusting the position of the cabin 3 and assembling with the top of the tower body, rotating the extension guide rail 5 back after the assembly is completed, rotating the cabin 3 to enable the cabin 3 not to interfere with the extension guide rail 5 (particularly, as shown in fig. 6, the cabin 3 is laterally abutted against or corresponds to the back of the extension guide rail 5), and installing the movable support rod 42 back to enable the extension guide rail 5 to be fixed;
s9.2, lifting the lifting mechanism 11, adjusting the position so that the guide blocks 113 are matched with the guide rail 4 and enter from the top of the extension guide rail 5, and then lowering the lifting mechanism 11 so that the hoisting fixing mechanism is assembled with the hub 31; lifting the lifting mechanism 11 until the guide blocks 113 are separated from the extension guide rail 5 and reach a proper position, adjusting the position of the hub 31 and assembling with the cabin 3;
s9.3, as shown in FIG. 9, lifting the lifting mechanism 11, and adjusting the position so that the guide block 113 is matched with the guide rail 4 and enters from the top of the extension guide rail 5, and then lowering the lifting mechanism 11 so that the lifting fixing mechanism is assembled with one blade 32; lifting the lifting mechanism 11 until the guide block 113 is separated from the extension guide rail 5 and reaches a proper position, rotating the hub 31, enabling the mounting groove on the hub 31 to correspond to the mounting position on the blade 32, adjusting the position of the blade 32 and assembling with the hub 31;
in S9.3, in detail, when each blade 32 is lifted, the main crane 1 should lift the end of the blade 32 close to the mounting portion, and then introduce the auxiliary crane 6, lift the end of the blade 32 far from the mounting portion by the auxiliary crane 6, and lift the main crane 1 and the auxiliary crane 6 together at the same time, so as to lift the blade 32 horizontally.
S9.4, repeating S9.3 until all the blades 32 are installed. The main lifting device 1 cooperates with the auxiliary lifting device 6 to respectively fix the positions of the blades 32 close to two ends, the main lifting device 1 and the auxiliary lifting device 6 are lifted together to enable the blades 32 to lift up in parallel, and the idle mounting grooves on the hub 31 are rotated to one side facing the extension guide rail 5 to correspond to the mounting positions on the blades 32, so that the blades 32 can be horizontally fed.
For this embodiment, the length of the guide rail 5 is often larger, and the disassembly and assembly are also necessarily more troublesome, but the whole impeller mechanism is not required to be lifted and assembled, so that the advantage is that the nacelle 3 is not required to be rotated in the process of assembling the hub 31 and the blades 32, interference is avoided, and the lifting operation can be completed only by translating and finely adjusting the height of the lifting mechanism 11.
For the first embodiment, through the cooperation of two cranes, accomplish stable lifting, and accomplish impeller mechanism and change from horizontal to vertical gesture, the shortcoming lies in that two cranes are needed, and the cost is higher, and all need only one crane to accomplish except this operating mode other operating modes, so the impeller hoisting mechanism of wind-powered electricity generation construction is proposed here, as shown in fig. 11-12, including hoisting mechanism 11, be provided with the ligature mechanism that is used for fixed impeller on the hoisting mechanism 11, still be provided with ligature dropping mechanism 7 on the hoisting mechanism 11, ligature dropping mechanism connects second ligature mechanism.
The work which is supposed to be completed by the auxiliary crane is completed through the binding landing mechanism 7, so that the cost of using one crane is saved.
Further, the binding dropping mechanism 7 comprises a hinge seat 71, the hinge seat 71 is fixedly connected with the lifting mechanism 11, a sprocket 72 is rotatably connected in the hinge seat 71 through a rotating shaft, the sprocket 72 is meshed with a chain 73, one end of the chain 73 is fixedly connected with a second binding mechanism, the other end of the chain 73 is fixedly connected with a limiting block 74, and the binding dropping mechanism 7 is further provided with a sprocket locking mechanism 8 and a sprocket braking mechanism 9.
In detail, an open cavity is arranged in the lifting mechanism 11, and the binding dropping mechanism 7 is arranged in the lifting mechanism 11; the two ends of the rotating shaft can be penetrated out from the two ends of the hinge seat 71 and are rotatably connected with the inner side wall of the lifting mechanism 11 through bearings as shown in fig. 13, so that the strength is improved, and the bearings can be arranged between the rotating shaft and the hinge seat 71.
As shown in fig. 13, the sprocket locking mechanism 8 includes a first electric push rod 81, the first electric push rod 81 is fixedly connected with the hinge seat 71, a first push rod 82 of the first electric push rod 81 passes through the hinge seat 71 and extends into from the sprocket 72, a locking hole matched with the first push rod 82 is provided on one side of the sprocket 72, and a small clearance fit is needed between the first push rod 82 and the hinge seat 71, so that the first push rod 82 is matched with the hinge seat 71 to resist radial shearing force.
As shown in fig. 14, the sprocket braking mechanism 9 includes a braking mounting seat 91, the braking mounting seat 91 is fixedly connected with the lifting mechanism 11, two ends of the braking mounting seat 91 are respectively hinged to the bottom ends of one clamp rod 92, two clamp rods 92 are respectively located at two sides of the sprocket 72, the top end of one clamp rod 92 is hinged to the cylinder body of the second electric push rod 93, the second push rod 931 of the second electric push rod 93 is hinged to the top end of the other clamp rod 92, two clamp rods 92 are respectively provided with a braking block 94 inwards, and the second push rod 931 of the second electric push rod 93 is retracted, so that the braking blocks 94 at two sides are propped against the sprocket 72 to brake, thereby reducing the speed of chain movement and preventing the excessive speed from forming potential safety hazards.
Further, the binding mechanism is just the binding belt 111 described above, the number of the binding belts 111 is two, one end of each binding belt 111 is fixedly connected with the lifting mechanism 11, the second binding mechanism comprises a connecting block fixedly connected with the chain 73, and the connecting block is fixedly connected with the second binding belt 731.
According to the structure, the hoisting process of the impeller mechanism is improved as follows:
s9.2.1, binding and fixing two binding belts 111 of the lifting mechanism 11 with the root parts of a first blade and a second blade of the impeller mechanism respectively, and binding and fixing a second binding belt 731 with a third blade;
s9.2.2, lifting the lifting mechanism 11 through lifting equipment to suspend the impeller mechanism, driving the chain to pull up the third blade through the limiting block 74 until the impeller mechanism is horizontal, retracting the second push rod 931 of the second electric push rod 93 to enable the brake blocks 94 on two sides to lock the chain wheel 72 for braking, and controlling the first push rod 82 of the first electric push rod 81 to extend and lock with the chain wheel 72 in a matched manner;
s9.2.3, after lifting the lifting mechanism 11 to a certain height, controlling the first push rod 82 of the first electric push rod 81 to retract, releasing the locking of the sprocket 72, and simultaneously controlling the second push rod 931 of the second electric push rod 93 to slightly extend relative to the locking state, so that the two side brake blocks 94 lock the sprocket 72, and the lifting mechanism 11 drives the first blade and the second blade to lift, and simultaneously, the third blade descends relatively, so that the impeller mechanism is gradually vertical.
In this process, to prevent the chain 73 from being damaged by friction with the hub 31, a protective sleeve may be wrapped around the head of the hub 3 and fixed thereto.
When the sprocket braking mechanism 9 can independently complete locking work, the sprocket locking mechanism 8 is not needed, more of the sprocket locking mechanism 8 serves as a safety mechanism, and the first push rod 82 is prevented from being locked by the sprocket braking mechanism 9 before lifting.
It should be noted that, the device has the advantages of reducing the use cost of a crane, but has the disadvantage that the stability in the hoisting process is slightly poor, and the device can be matched with the guiding mechanism in the foregoing under the condition that the hoisting process is unstable due to some extreme working conditions: one side of the tower body is fixedly connected with a guide rail along the lifting direction; one side of the lifting mechanism 11 is fixedly connected with one end of a connecting rod, the other end of the connecting rod is fixedly connected with a guide block matched with a guide rail, the guide block is matched with the guide rail to form a guide rail pair, the lifting is performed on the basis of guiding through a tower body, and the lifting and the guide block are combined, so that the cost is saved, and the lifting and the guide rail pair has extremely strong stability.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the invention.
Claims (5)
1. The utility model provides an impeller hoisting mechanism of wind-powered electricity generation construction, includes hoisting mechanism (11), be provided with the ligature mechanism that is used for fixed impeller on hoisting mechanism (11), its characterized in that: the lifting mechanism (11) is also provided with a binding falling mechanism (7), and the binding falling mechanism is connected with a second binding mechanism;
the binding descending mechanism (7) comprises a hinging seat (71), the hinging seat (71) is fixedly connected with the lifting mechanism (11), a chain wheel (72) is rotatably connected in the hinging seat (71) through a rotating shaft, the chain wheel (72) is meshed with a chain (73), one end of the chain (73) is fixedly connected with a second binding mechanism, the other end of the chain (73) is fixedly connected with a limiting block (74), and the binding descending mechanism (7) is further provided with a chain wheel locking mechanism (8) and a chain wheel braking mechanism (9);
two binding belts (111) of the lifting mechanism (11) are respectively used for binding and fixing the roots of a first blade and a second blade of the impeller mechanism, and a second binding belt (731) is used for binding and fixing a third blade and horizontally lifting the impeller mechanism;
one side of the lifting mechanism (11) is fixedly connected with one end of a connecting rod, the other end of the connecting rod is fixedly connected with a guide block matched with the guide rail (4), the guide block is matched with the guide rail (4) to form a guide rail pair, and the guide rail (4) is used for being fixedly connected with one side of a tower body of the wind power generation equipment and is arranged along the lifting direction;
the extension guide rail (5) one end is connected at guide rail (4) top, and extension guide rail (5) are higher than the body of the tower top, articulate between extension guide rail (5) and guide rail (4), and outside opening part and guide rail (4) of extension guide rail (5) pass through hinge (41) and articulate for extension guide rail (5) can be along the direction rotation of keeping away from the body of the tower, and guide rail (4) top slightly is lower than the body of the tower top, guarantees that extension guide rail (5) can not produce the interference at the top of the tower horizontal plane after changeing away.
2. The impeller lifting mechanism for wind power construction as claimed in claim 1, wherein: the chain wheel locking mechanism (8) comprises a first electric push rod (81), the first electric push rod (81) is fixedly connected with the hinge seat (71), a first push rod (82) of the first electric push rod (81) penetrates through the hinge seat (71) and stretches into the chain wheel (72) from one side, and a locking hole matched with the first push rod (82) is formed in one side of the chain wheel (72).
3. The impeller lifting mechanism for wind power construction as claimed in claim 1, wherein: sprocket braking mechanism (9) are including braking mount pad (91), braking mount pad (91) fixed connection hoisting mechanism (11), the bottom of a binding clip (92) is articulated respectively at braking mount pad (91) both ends, and two binding clip (92) are located sprocket (72) both sides respectively, and wherein the cylinder body of second electric push rod (93) is articulated on a binding clip (92) top, and the second push rod (931) of second electric push rod (93) articulates another binding clip (92) top, and two binding clip (92) inwards set up brake block (94) respectively.
4. The impeller lifting mechanism for wind power construction as claimed in claim 1, wherein: the binding mechanism comprises two binding belts (111), one end of each binding belt (111) is fixedly connected with the lifting mechanism (11), the second binding mechanism comprises a connecting block fixedly connected with the chain (73), and the connecting block is fixedly connected with the second binding belt (731).
5. A wind power construction method comprising the impeller lifting mechanism according to any one of claims 1-4, comprising lifting equipment, wherein the lifting mechanism (11) is arranged on the lifting equipment, and further comprising a wind power generation equipment assembly, the wind power generation equipment assembly comprises a tower, a cabin, a hub and blades, and the method is characterized by comprising the following steps:
s1, completing foundation construction and installing a foundation ring;
s2, hoisting tower bottom equipment on the top of the foundation ring through hoisting equipment, and installing and debugging;
s3, hoisting a tower section on the top of the foundation ring, installing and fixing the tower section with the foundation ring, and then hoisting a plurality of tower sections in sequence to form a tower body;
s4, hoisting the top of the cabin Yu Dashen, and installing, fixing and debugging the cabin and the top of the tower body;
s5, preassembling the hub and the blades to form an impeller mechanism;
s6, binding and fixing two binding belts (111) of the lifting mechanism (11) with the root parts of a first blade and a second blade of the impeller mechanism respectively, and binding and fixing a second binding belt (731) with a third blade;
s7, controlling a lifting mechanism (11) to lift through lifting equipment, enabling an impeller mechanism to be suspended, driving a chain to pull up a third blade through a limiting block (74), controlling a first push rod (82) of a first electric push rod (81) to extend until the impeller mechanism is horizontal, locking with a chain wheel (72) in a matched mode, and simultaneously controlling a second push rod (931) of a second electric push rod (93) to retract, so that two sides of a brake block (94) are locked with the chain wheel (72) inwards;
s8, controlling the lifting mechanism (11) to lift through lifting equipment, controlling the first push rod (82) of the first electric push rod (81) to retract after the lifting mechanism reaches a certain height, unlocking the chain wheel (72), enabling the lifting mechanism (11) to drive the first blade and the second blade to lift, and simultaneously enabling the third blade to relatively descend, so that the impeller mechanism is gradually vertical;
and S9, rotating the engine room to a proper position, and assembling the engine room and the impeller mechanism.
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| CN202310613984.XA CN116605766B (en) | 2023-05-29 | 2023-05-29 | Impeller lifting mechanism for wind power construction and wind power construction method |
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| CN202310613984.XA CN116605766B (en) | 2023-05-29 | 2023-05-29 | Impeller lifting mechanism for wind power construction and wind power construction method |
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| CN116605766A (en) | 2023-08-18 |
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