CN116902774B - Single-hanging-point turning tool for impeller of high-capacity wind generating set and construction method of single-hanging-point turning tool - Google Patents
Single-hanging-point turning tool for impeller of high-capacity wind generating set and construction method of single-hanging-point turning tool Download PDFInfo
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- CN116902774B CN116902774B CN202311182391.9A CN202311182391A CN116902774B CN 116902774 B CN116902774 B CN 116902774B CN 202311182391 A CN202311182391 A CN 202311182391A CN 116902774 B CN116902774 B CN 116902774B
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 17
- 230000007306 turnover Effects 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 5
- 210000001503 joint Anatomy 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 238000003825 pressing Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
- 238000003466 welding Methods 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
- 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
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
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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
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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
- B66C13/18—Control systems or devices
-
- 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
- B66C13/18—Control systems or devices
- B66C13/40—Applications of devices for transmitting control pulses; Applications of remote control devices
- B66C13/44—Electrical transmitters
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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)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a single-lifting-point turning tool for an impeller of a high-capacity wind generating set and a construction method thereof, wherein the single-lifting-point turning tool comprises a tool body, a hydraulic telescopic oil cylinder, a movable lifting lug, a supercharged oil tank, a diesel generator, a hoisting steel wire rope, a turning lifting hook, a fixed hoisting plate, a winch and a hydraulic pump; the tool body comprises a horizontally arranged strip-shaped beam body, and a plurality of turnover lifting hook adjusting hanging columns which are arranged at intervals in the track groove are arranged on the tool body; the movable lifting lug is assembled in the track groove of the beam body through the track plate at the bottom of the movable lifting lug; a piston rod of the hydraulic telescopic cylinder is connected with the movable lifting lug; the turning-over hanging hook is hung on the turning-over hanging hook adjusting hanging column, and the lifting and the lowering of the hanging hook are realized by winding and unwinding the hanging steel wire rope through the winch; the fixed hanging plate is arranged below the rear end side of the track groove and is provided with a fixed hanging column; the tool and the construction method thereof realize single-point hoisting and turning operation of the impeller, not only improve construction efficiency and save construction cost, but also get rid of the limitation factor of the fan installation ship.
Description
Technical Field
The invention relates to the technical field of offshore wind power installation, in particular to a single-hanging-point turning tool for an impeller of a high-capacity wind generating set and a construction method thereof.
Background
The offshore wind turbine is mainly installed in an integral hoisting mode and a split hoisting mode. The integral hoisting mode has higher hoisting requirements, not only needs a large transport ship and a floating crane ship to have stronger bearing and hoisting capacities, but also requires equipment installation precision, hoisting tools and complexity of professional butt joint tool design, and is only suitable for short-distance transportation, so that no large-capacity unit is used in China at present. The split type hoisting is divided into a single-blade hoisting mode and an impeller hoisting mode; wherein, the single-blade hoisting is divided into a horizontal single-blade type and an oblique single-blade type.
The horizontal single blade type wind power generation system has low requirements on the performance of wind power ships, stable hoisting, easy operation, high hoisting wind speed, multiple operation window periods and the like, and is applied by a plurality of wind power manufacturers, for example: gold wind technology, long-range energy, shanghai electricity, and the like; however, the single-blade hoisting mode has the obvious defects of more hoisting times, more offshore construction procedures, large overhead working capacity, less operation space and the like.
Currently, wind power manufacturers using oblique single blade type wind power include eastern electric, ming-yang intelligent, shanghai electric and the like, but with the rapid development of more than 8MW type fans in recent years, the fan system adopting the oblique single blade type hoisting mode has large requirements on hoisting, high requirements on the performance of the installation ship and more construction procedures, and the construction cost is not in direct proportion to the serious construction benefit, so that the hoisting mode is gradually replaced.
The impeller hoisting is also called three-blade hoisting, and is a hoisting mode that after the blades and the impellers are assembled on a deck of a ship, the impellers are turned over in the air in a double-hoisting matching mode and are in butt joint with a cabin. Therefore, the impeller hoisting mode is adopted, so that the field hoisting efficiency is high, the construction cost is low, and the impeller hoisting mode is widely applied to construction by a plurality of wind power manufacturers, including open sun intelligence, distant view energy, eastern electric and the like. However, most of the current installation vessels are rebuilt by other ocean engineering vessels, so with the rapid development of more than 8MW type fans in recent years, the large-scale of the fans leads to the installation vessels not meeting the requirements of lifting height and lifting capacity gradually, especially the requirements of turning over and sliding tail of impellers assembled by ultra-long blades cannot be met in the aspects of the performances of auxiliary cranes, such as lifting weight, working radius and the like, and further the offshore construction safety and construction work efficiency are difficult to ensure, namely, most of the current offshore wind power construction vessels in the market face the problems that the turning over operation of the impellers is limited by the pain point of insufficient auxiliary hanging performance.
At present, a plurality of research results are made at home and abroad on an impeller turning-over lifting appliance for an impeller lifting mode, and an intelligent fan impeller turning-over tail sliding lifting appliance developed in Shanghai tin bloom is one of the representatives of the impeller turning-over lifting appliance; however, although the research results are all limited by the coordination of double cranes with turning over and lifting, the instability of a lifting system is easy to occur when the double cranes coordinate operation, the damage of blades is easy to be caused, the high-altitude operation is realized when the tail sliding tool is installed, safety system hanging points are not arranged around the tail sliding tool, and the defects of large potential safety hazard and the like are overcome.
Disclosure of Invention
The invention aims to provide a single-hanging-point turning tool for a large-capacity wind generating set impeller, which solves the problems in the prior art.
The invention further aims to provide a construction method for completing hoisting, turning and installing of the impeller by adopting the single-hoisting-point turning tool for the impeller of the high-capacity wind generating set.
For this purpose, the technical scheme of the invention is as follows:
a single-lifting-point turning tool for an impeller of a high-capacity wind generating set comprises a tool body, a hydraulic telescopic oil cylinder, a movable lifting lug, a supercharged oil tank, a diesel generator, a hoisting steel wire rope, a turning lifting hook, a fixed hoisting plate, a winch and a hydraulic pump; wherein,
the tooling body comprises a horizontally arranged strip-shaped beam body, and two track grooves are symmetrically formed in the opposite side beam walls positioned at the rear part of the beam body along the length direction of the beam body; a plurality of turning-over lifting hook adjusting hanging columns are arranged on the beam body below the front end side of the track groove at intervals, and each turning-over lifting hook adjusting hanging column vertically penetrates through and is fixed on the beam wall; the bottom end of the movable lifting lug is provided with a track plate, so that the movable lifting lug is assembled in track grooves on two sides of the beam body through the track plate and can reciprocate along the track grooves in the length direction of the beam body; the hydraulic telescopic oil cylinder is horizontally fixed on the top surface of the front part of the beam body in a way that the piston rod of the hydraulic telescopic oil cylinder faces the Liang Tihou end; the rod end of a piston rod of the hydraulic telescopic oil cylinder is vertically fixed on the movable lifting lug;
the turning hanging hook is hung on any turning hanging hook adjusting hanging column, the windlass is arranged at the adjacent side of the turning hanging hook at intervals, the hoisting steel wire rope is arranged on the windlass, one end of the hoisting steel wire rope is connected with a pulley block of the turning hanging hook, so that the hoisting steel wire rope is collected and released through the windlass to control the turning hanging hook to lift and drop; the fixed lifting plates are vertically arranged on the beam body below the rear end side of the track groove at intervals, and fixed lifting columns vertically penetrate through the beam body;
the supercharged oil tank, the diesel generator and the hydraulic pump are all arranged on the rear end side of the beam body; the supercharged oil tank is connected with the hydraulic pump through a supercharging cavity; the hydraulic pump is connected with the hydraulic telescopic oil cylinder; the diesel generator is respectively connected with the winch and the hydraulic pump.
Further, the movable lifting lug consists of two lifting lug plates, a connecting plate and four connecting lifting columns; the lifting lug plate consists of a lifting column fixing plate which is vertically arranged and a track plate which is formed by extending from the bottom edge of the lifting column fixing plate in the horizontal direction; the two lifting lug plates are symmetrically arranged at two sides of the beam body in a mode that the two lifting column fixing plates are parallel to the beam wall and the track plates are opposite, and the track plates of the two lifting lug plates are respectively embedded in the track grooves at two sides of the beam body; the connecting plate is vertically fixed between the inner side plate surfaces of the two lifting lug plates, so that the two lifting lug plates are connected and fixed into a whole; four connection lifting columns are uniformly distributed on the outer side plate surfaces of the two lifting lug plates, and two connection lifting columns on each lifting lug plate are symmetrically and vertically fixed on the lifting lug plates.
Further, the turning-over lifting hook comprises a vertically arranged hanging hook plate, hanging hook holes and fixed pulleys are arranged on the hanging hook plate at intervals along the perpendicular bisector, a movable pulley is arranged below the fixed pulleys and is rotatably arranged on a movable pulley frame, and the bottom end of the movable pulley frame is hinged with the lifting hook; the turning-over lifting hook is penetrated on the turning-over lifting hook adjusting lifting column through a hanging hook hole, and the winch is fixed on the beam body in a manner that the central axis of the steel wire rope roller and the central axis of the fixed pulley are positioned on the same horizontal plane; one end of the hoisting wire rope is fixed on the fixed pulley, the other end of the hoisting wire rope sequentially bypasses the movable pulley and the fixed pulley, then horizontally extends to the winch to be discharged, and is wound on a wire rope roller of the winch in a winding manner.
Further, the end parts of each turning lifting hook adjusting hanging column, each fixing hanging column and each connecting hanging column are fixedly connected with an annular limiting cap in a threaded manner.
Further, the opening positions of the track grooves satisfy: the movable lifting lug can move to the position that the center point of the movable lifting lug is positioned right above any overturning lifting hook adjusting lifting column, and the movable lifting lug can move to the position that the center point of the movable lifting lug is positioned right above the fixed lifting column.
The construction method for realizing the single-lifting-point turning tool for the impeller of the high-capacity wind generating set comprises the following steps of:
s1, hanging a turning lifting hook on a proper turning lifting hook adjusting hanging column according to the size of an impeller to be hoisted, and adjusting the position of a movable lifting lug in a track groove through a hydraulic telescopic oil cylinder to enable the center point of the movable lifting lug to be positioned right above the turning lifting hook adjusting hanging column on which the turning lifting hook is hung;
s2, the crane moves the main hook head to the upper part of the tool, and two annular hanging strips are used for respectively connecting the main hook head and the movable lifting lug of the tool; lifting the crane, slowly lifting the tool to a position at least 0.5m away from the main deck surface, and observing the state of the lifting tool; when the state of the lifting appliance is normal, the single lifting point type turning tool is lifted to the upper part of the impeller by the crane, the turning lifting hook is connected with the turning lifting point of the impeller by using one annular hanging strip, and the fixed lifting column is connected with the main lifting point of the impeller by using the other annular hanging strip;
s3, the crane continues to lift until the impeller is slowly lifted to a height of at least 0.5m from the main deck surface, and the state of the impeller is observed: 1) If the state of the impeller is abnormal after lifting, the impeller is lowered onto the main deck again, and the position of the movable lifting lug in the track groove is adjusted; 2) If the impeller is in a normal state, continuing lifting until the impeller is lifted to a turnover height horizontally;
s4, controlling the winch to pay out the hoisting steel wire rope, so that the turning-over lifting hook is gradually lowered; meanwhile, the hydraulic telescopic oil cylinder is continuously controlled to gradually adjust the position of the movable lifting lug in the track groove, so that the lifting force of the crane and the gravity of the suspended object are always on the same vertical line until the impeller finishes turning over; the crane horizontally moves, and the impeller after turning over is lifted to the engine room generator assembly; then the crane slowly descends to enable the impeller and the cabin generator assembly to be in butt joint installation;
s5, after the impeller is in butt joint and installation, controlling a piston rod of the hydraulic telescopic oil cylinder to retract, so that the movable lifting lug is restored to the initial position; and dismantling the annular hanging strip between the fixed hanging column and the main hanging point of the impeller, controlling the winch to retract the hoisting steel wire rope, lifting the tool by the crane, returning to the ship, and placing the tool back to the storage position of the deck of the ship.
Further, in step S4, the hoisting wire rope is lowered and the hydraulic telescopic cylinder is extended out synchronously at a constant speed.
Compared with the prior art, the single-lifting-point turning tool for the impeller of the high-capacity wind generating set and the construction method thereof break through the traditional construction process of double-machine turning, can efficiently finish construction only under the condition that the main crane meets the construction conditions, and realize the maximization of the construction benefit of installing ships; in addition, from the aspect of economy, the problem of difficult installation of the current large-capacity fan is solved by adopting two ways of refitting hoisting equipment and refitting wind power installation ships, the cost of the application is lower, the weaknesses of some wind power installation ships can be completely broken through, and the construction benefit is improved; in sum, the single hoisting point type turning tool can improve construction work efficiency, saves construction cost, achieves the purpose of getting rid of the constraint that a fan installation ship cannot turn over an impeller due to self limitation, and reduces the threshold of a wind power platform ship for installing a large-sized fan.
Drawings
FIG. 1 is a schematic structural view of a single-lifting-point turning tool for a large-capacity wind generating set impeller;
FIG. 2 is a schematic structural view of a tool body of the single-lifting-point turning tool for the impeller of the high-capacity wind generating set;
fig. 3 (a) is a schematic structural diagram of a lifting lug plate of a movable lifting lug of a single-lifting-point turning tool for a large-capacity wind generating set impeller;
FIG. 3 (b) is a side view of a mobile lifting lug of the single-lifting-point turning tool for the impeller of the high-capacity wind generating set;
FIG. 4 is a schematic diagram of a turning hook of a single-lifting-point turning tool for a large-capacity wind turbine generator system impeller;
fig. 5 is a schematic structural diagram of a remote control handle of the single-lifting-point turning tool for the impeller of the high-capacity wind generating set.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and specific examples, which are in no way limiting.
Referring to fig. 1, the single-lifting-point turning tool for the impeller of the high-capacity wind generating set comprises a tool body 1, a hydraulic telescopic cylinder 2, a movable lifting lug 3, a supercharged oil tank 5, a diesel generator 6, a steel wire rope 8, a turning lifting hook 9, a fixed lifting plate 10, a winch 11 and a hydraulic pump 12; wherein,
referring to fig. 2, the tool body 1 comprises a horizontally arranged strip-shaped beam body, and the front end of the beam body is processed into a conical end; two track grooves 4 are symmetrically formed in the opposite side beam walls positioned at the rear part of the beam body along the length direction of the beam body, and the track grooves 4 are formed near the top surface of the beam body; three turnover lifting hook adjusting hanging columns 7 are arranged on the beam body below the front end side of the track groove 4 at intervals, each turnover lifting hook adjusting hanging column 7 vertically penetrates through and is fixed on the beam wall, and annular limiting caps are fixedly connected with the end parts of the turnover lifting hook adjusting hanging columns 7 in a threaded manner so as to place hanging strips to slip off the turnover lifting hook adjusting hanging columns 7; the three turning lifting hooks are used for adjusting the hanging columns 7, so that the tool can be used for hanging and turning operation of impellers with different sizes, and the application range of the turning lifting tool is enlarged.
In this embodiment, the tool body 1 is preferably a box frame structure made of low alloy structural steel as a main body for bearing connection and fixing other components, so as to meet the requirements of light weight and high structural strength.
Referring to fig. 3 (a) and 3 (b), the movable shackle 3 is composed of two shackle plates 3a, one connecting plate 3d, and four connecting suspension posts 3c; the lifting lug plate 3a is composed of a lifting column fixing plate which is vertically arranged and a track plate 3b which is formed by extending from the bottom of the lifting column fixing plate along the horizontal direction, and the size of the track plate is matched with that of the track groove 4; the two lifting lug plates 3a are symmetrically arranged at two sides of the beam body in a mode that the two lifting column fixing plates are parallel to the beam wall and the track plates are opposite, and the track plates 3b of the two lifting lug plates are respectively embedded in the track grooves 4 at two sides of the beam body, so that the two lifting lug plates 3a can reciprocate in the track grooves 4 along the length direction of the beam body; the connecting plate 3d is vertically fixed between the inner side plate surfaces of the two lifting lug plates 3a, so that the two lifting lug plates 3a are connected and fixed into a whole; the four connecting hanging columns 3c are uniformly distributed on the outer side plate surfaces of the two lifting lug plates 3a, the two connecting hanging columns 3c on each lifting lug plate 3a are symmetrically and vertically fixed on the lifting lug plate 3a, and the end parts of the connecting hanging columns 3c are fixedly connected with annular limiting caps in a threaded manner so as to prevent hanging strips from slipping off the connecting hanging columns 3c; in this embodiment, the movable lifting lug 3 is made of alloy steel Q335B, and the maximum working stroke thereof is adapted to the length of the track groove 4, preferably 2.8m. In practical application, lubricating grease is smeared on the track plate 3b so as to reduce friction force between the track plate and the track groove 4, and further reduce abrasion between the track plate and the track groove.
The hydraulic telescopic cylinder 2 is horizontally fixed on the front top surface of the beam body in a way that the piston rod of the hydraulic telescopic cylinder faces to the Liang Tihou end; the rod end of a piston rod of the hydraulic telescopic oil cylinder 2 is vertically fixed at the center of the plate surface of the connecting plate 3d so as to drive the movable lifting lug 3 to move; when the piston rod of the hydraulic telescopic cylinder 2 is initially in a retracted state, the movable lifting lug 3 is positioned at the front side end of the track groove 4, and when the piston rod of the hydraulic telescopic cylinder 2 is gradually extended, the movable lifting lug 3 moves along the track groove 4 until reaching the rear side end of the track groove 4. In the tool, a hydraulic telescopic oil cylinder 2 drives a movable lifting lug 3 to reciprocate along track grooves 4 on two sides of a tool body 1; the hydraulic telescopic cylinder 2 is used as a hydraulic executing element which converts hydraulic energy into mechanical energy and does linear reciprocating motion, and the position of the movable lifting lug 3 serving as a main lifting point relative to the tool body 1 is adjusted by utilizing the characteristics of no transmission clearance and stable operation during working.
According to the size of the impeller to be hoisted, the turning lifting hook 9 is selectively hung on any turning lifting hook adjusting hanging column 7 on the tool body 1, and correspondingly, the winch 11 is fixed on the bottom surface of the rear end of the tool body 1; specifically, referring to fig. 4, the turn-over hook 9 includes a hook plate 9a, a fixed pulley 9c, a movable pulley 9d, and a hook 9e; a hanging hole 9b is formed in the upper part of the plate surface of the hanging plate 9a, a fixed pulley 9c is fixed at the lower part of the hanging plate, and the central axis of the fixed pulley 9c and the central axis of a steel wire rope roller on the winch 11 are perpendicular to the side wall of the beam body and are positioned on the same horizontal plane; the movable pulley 9d is rotatably arranged below the fixed pulley 9c through a movable pulley frame, and the lifting hook 9e is hinged to the bottom of the movable pulley frame; one end of the hoisting wire rope is fixed on the fixed pulley 9c, the other end sequentially bypasses the movable pulley 9d and the fixed pulley 9c, then horizontally extends to the winch 11 to be discharged, and is wound on a wire rope roller of the winch in a winding manner; in actual use, the hoisting wire rope is wound and unwound by the hoist 11 to control the lifting and dropping of the lifting hook 9e at a constant speed.
The fixed hanging plate 10 is arranged on the adjacent side of the winch 11 and is positioned between the winch 11 and the turning-over lifting hook 9; the fixed hanging plate 10 is a plate body vertically fixed on the bottom surface of the tool body 1, a fixed hanging column vertically penetrates through the plate body, and annular limiting caps are fixedly connected with the end parts of the fixed hanging column in a threaded manner; specifically, the fixed hanging plate 10 is preferably manufactured by welding alloy steel Q335B, the connection between a hanger and a main hanging point of an impeller is realized through a hanging strip, and a vertical line where the central point of a fixed hanging column is positioned is also the action line of lifting force and gravity of the hung object after the turning of the impeller is completed; when the lifting device is used, the fixed lifting plate 10 is used as a fixed lifting point of a tool, the turning-over lifting hook 9 is used as a movable lifting point of the tool, the turning-over lifting hook is connected with two sides of an impeller to be lifted through a hanging belt or a lifting rope respectively, and then the turning-over lifting hook 9 is controlled to be flush with the bottom end of the hanging belt or the lifting rope on the fixed lifting plate 10, so that the impeller is horizontally lifted by the tool; the turning-over lifting hook 9 is controlled to lift up to the position above the bottom end of a hanging belt or a hanging rope on the fixed hanging plate 10, so that the impeller is gradually and obliquely lifted by the tool until turning-over is completed.
In practical application, the lifting hook of loop wheel machine is connected with portable lug 3 through the suspender, considers this frock before the hoist and mount impeller, after, and the whole in-process of standing up of impeller, the focus point of frock is in the change always, consequently, in order to guarantee steady hoist and the standing up of impeller, the position of seting up of track groove 4 on frock body 1, the position of setting up of fixed hanger plate 10, and stand up lifting hook adjustment davit 7 setting up position should satisfy: when the movable lifting lug 3 is positioned at the front end side or near the front end side of the track groove 4, the turning lifting hook adjusting lifting column 7 on the beam body near the front end is positioned right below the center point of the movable lifting lug 3; when the movable shackle 3 is located at the rear end side or near the front end side of the track groove 4, the fixed suspension post is located directly below the center point of the movable shackle 3. Based on the above, in the initial state, the turning-over lifting hook 9 selects a proper turning-over lifting hook adjusting lifting column 7 according to the size of the impeller, and correspondingly, the movable lifting lug 3 moves in the track groove 4 until the center point of the movable lifting lug is positioned on the center vertical line of the turning-over lifting hook 9; then, in the turning process of the impeller, the movable lifting lug 3 is continuously changed in the track groove 4; finally, after the impeller is turned over, the movable lifting lug 3 moves to a position near the rear end side of the track groove, so that the center point of the movable lifting lug 3 is positioned right above the fixed lifting column; namely, in the whole turning process, the lifting force of the crane and the gravity of the hung object are always on the same vertical line, so that the hung object (impeller) is always in a balanced state in the turning process.
The supercharged oil tank 5 and the diesel generator 6 are fixed on the top surface of the rear end of the tool body 1 side by side, and the hydraulic pump 12 is fixed on the bottom surface of the rear end of the tool body 1; in particular, the method comprises the steps of,
the booster-type oil tank 5 is connected with an accumulator arranged in the hydraulic pump 12 through a booster cavity so as to avoid cavitation caused by insufficient boost pressure due to short-time drop of the supply pressure of the hydraulic pump, and the work of the oil cylinder is reduced or the oil cylinder fails; the hydraulic pump 12 sucks oil from the supercharged oil tank 5, forms pressure oil and discharges the pressure oil to the hydraulic telescopic oil cylinder 2; the oil outlet end of the hydraulic pump 12 is connected with the oil inlet of the hydraulic telescopic oil cylinder 2 through an oil outlet pipeline and communicated with the oil return port of the hydraulic telescopic oil cylinder 2 through an oil inlet pipeline;
the diesel generator 6 is respectively connected with the winch 11 and the hydraulic pump 12, specifically, the diesel generator 6 supplies power to the hydraulic pump 12, and the working frequency of the hydraulic pump 12 can be adjusted according to different lifting appliances and working conditions to drive the hydraulic telescopic cylinder 2 to act; meanwhile, the diesel generator 6 supplies power for the winch so as to adjust lifting and lowering of the turning lifting hook 9, realize linkage control of the turning lifting hook 9 and the hydraulic telescopic cylinder 2 and ensure that the turning process is always in a balanced state.
Referring to fig. 5, in order to facilitate controlling the lifting and turning operations of the tool, the tool is further provided with a remote control handle; the remote control handle is provided with a lithium battery, adopts a wireless remote control mode (> 150 m), utilizes a radio signal, is designed according to the existing wireless remote control mode, has a signal enhancement antenna at the top, and is provided with ten keys and an indicator lamp on a control panel; specifically, the ten keys include: the emergency stop button can be pressed when an emergency occurs under any working condition, and the working condition can stop action immediately; the switch button is used for starting the remote controller to realize the control of the impeller turning lifting appliance; the linkage control key is used for realizing linkage control of the double-acting hydraulic oil cylinder device and the turning lifting hook, and actions of the hydraulic oil cylinder and the turning lifting hook can be synchronously performed after the hydraulic oil cylinder device and the turning lifting hook are pressed down; a linkage disengaging button, namely a linkage disengaging button for realizing the double-acting hydraulic cylinder device and the turning lifting hook; the turning button is pressed, namely the button is pressed after the linkage control is pressed, and the double-acting hydraulic oil cylinder device and the turning lifting hook synchronously act at a constant speed, stop and re-press; the recovery button, namely the linkage control after the lifting appliance unhooking can be realized by pressing down the recovery before the lifting appliance unhooking, so that the double-acting hydraulic oil cylinder device and the turning lifting hook return to the working state, and stop the stopping and re-pressing; the advance stroke button is used for controlling the advance of a piston rod in the oil cylinder independently, and stopping the repeated pressing; the back stroke button is used for independently controlling the back of a piston rod in the oil cylinder, and stopping the repeated pressing; the retracting button is used for controlling the lifting of the steel wire rope independently, and stopping the repeated pressing; the release button is used for controlling the release of the steel wire rope independently, and stopping the repeated pressing; a red bulb and a green bulb are arranged in the indicator lamp; wherein, the working state shows green; the fault status is displayed in red; the signal enhancement antenna is used for enhancing the signal emission intensity and increasing the area of the recovered signal so as to control the mechanical movement uninterruptedly.
The specific construction method for realizing the hoisting and turning of the impeller by the single crane by adopting the single hoisting point type turning tool for the impeller of the high-capacity wind generating set comprises the following steps:
s1, a crane moves a main lifting hook head to a position above a single lifting point type turning tool, and constructors connect the single lifting point type turning tool with the crane by using two hanging strips, specifically, one sides of the two annular hanging strips are respectively sleeved on lifting columns of two lifting lug plates on a movable lifting lug, and the other sides of the two annular hanging strips are sleeved on the main lifting hook head together; then lifting the crane until the single-lifting-point turning tool is slowly lifted to a position 0.5m away from the main deck surface, and observing the state of the lifting tool; after the condition of the lifting appliance is determined to be normal, the single lifting point type turning tool is lifted to the upper part of the impeller by the command crane; the constructor connects the single-hanging-point turning tool with the impeller by using the other two annular hanging strips, specifically, connects the turning lifting hook with the turning hanging point of the impeller by using one annular hanging strip, and connects the fixed hanging plate with the main hanging point of the impeller by using the other annular hanging strip;
s2, continuously lifting the crane until the impeller is slowly lifted to a position 0.5m away from the main deck surface, and observing the state of the impeller: 1) If the state of the impeller is abnormal after lifting, the impeller is lowered onto the main deck again to adjust the single-lifting-point turning tool; 2) If the impeller is in a normal state, continuing lifting until the impeller is lifted to a turnover height horizontally;
s3, controlling a winch to pay out a steel wire rope and drop a turning lifting hook to enable the impeller to turn over until turning over is completed, and simultaneously controlling a hydraulic pump to drive a hydraulic telescopic cylinder to extend outwards to drive a movable lifting lug to move to a new tool gravity center position, so that the turning over lifting hook and the double-acting hydraulic telescopic cylinder device are in a linkage state until the impeller is turned over; the crane horizontally moves to enable the turned impeller to be lifted to the cabin generator assembly, and slowly descends to finish the butt joint installation of the impeller and the cabin generator assembly;
in the turning process, the steel wire rope is lowered and the hydraulic cylinder piston rod pushes the lifting lug (the gravity center of the hydraulic cylinder piston rod changes in real time), the two actions are performed synchronously at a uniform speed, at the moment, the impeller posture is gradually changed, and meanwhile, the stress state of the steel wire rope is observed; when the steel wire rope is lowered to be free from being stressed, the piston rod of the hydraulic cylinder also reaches the maximum stroke, and the turning of the impeller is completed.
S4, after the impeller is in butt joint and installation, when the impeller reaches a unhooking condition, the hydraulic pump is controlled to drive the hydraulic telescopic oil cylinder to retract to drive the movable lifting lug to restore to the initial position, the rigging is manually dismantled, the winch is controlled to quickly recover the steel wire rope, and the crane is used for lifting the single-hanging-point turning tool to return to the ship and placing the single-hanging-point turning tool to return to the ship deck storage position.
The tool is practically applied to the turning-over installation construction process of the 8MW type impeller, wherein each blade of the 8MW type impeller weighs about 40t, the impeller weighs about 80t, and the total weight of the impeller is about 200t. Through actual construction operation, the tool successfully assists the fan to install and construct operation, and successfully realizes efficient operation of turning over and installing the impeller of the single crane.
Claims (7)
1. The single-lifting-point turning tool for the impeller of the high-capacity wind generating set is characterized by comprising a tool body (1), a hydraulic telescopic oil cylinder (2), a movable lifting lug (3), a supercharged oil tank (5), a diesel generator (6), a hoisting steel wire rope (8), a turning lifting hook (9), a fixed lifting plate (10), a winch (11) and a hydraulic pump (12); wherein,
the tooling body (1) comprises a horizontally arranged strip-shaped beam body, and two track grooves (4) are symmetrically formed in the opposite side beam walls positioned at the rear part of the beam body along the length direction of the beam body; a plurality of turning lifting hook adjusting hanging columns (7) are arranged on the beam body below the front end side of the track groove (4) at intervals, and each turning lifting hook adjusting hanging column (7) vertically penetrates through and is fixed on the beam wall; the bottom end of the movable lifting lug (3) is provided with a track plate, so that the movable lifting lug is assembled in the track grooves (4) on two sides of the beam body through the track plate and can reciprocate along the track grooves (4) in the length direction of the beam body; the hydraulic telescopic oil cylinder (2) is horizontally fixed on the top surface of the front part of the beam body in a way that the piston rod of the hydraulic telescopic oil cylinder faces the Liang Tihou end; the rod end of a piston rod of the hydraulic telescopic oil cylinder (2) is vertically fixed on the movable lifting lug (3);
the turnover lifting hooks (9) are hung on any turnover lifting hook adjusting lifting column (7), the windlass (11) is arranged at the adjacent side of the turnover lifting hooks (9) at intervals, the hoisting steel wire ropes (8) are arranged on the windlass (11), one ends of the hoisting steel wire ropes are connected with pulley blocks of the turnover lifting hooks (9) so as to control the lifting and the lowering of the turnover lifting hooks (9) by winding and unwinding the hoisting steel wire ropes (8) through the windlass (11); the fixed hanging plates (10) are vertically arranged on the beam body below the rear end side of the track groove (4) at intervals, and fixed hanging columns vertically penetrate through the beam body;
the supercharged oil tank (5), the diesel generator (6) and the hydraulic pump (12) are all arranged on the rear end side of the beam body; the supercharged oil tank (5) is connected with the hydraulic pump (12) through a supercharging cavity; the hydraulic pump (12) is connected with the hydraulic telescopic cylinder (2); the diesel generator (6) is respectively connected with the winch (11) and the hydraulic pump (12).
2. The single-lifting-point turning tool for the impeller of the high-capacity wind generating set according to claim 1, wherein the movable lifting lug (3) is composed of two lifting lug plates (3 a), one connecting plate (3 d) and four connecting lifting columns (3 c); the lifting lug plate (3 a) is composed of a lifting column fixing plate which is vertically arranged and a track plate (3 b) which is formed by extending from the bottom edge of the lifting column fixing plate in the horizontal direction; the two lifting lug plates (3 a) are symmetrically arranged at two sides of the beam body in a mode that the two lifting column fixing plates are parallel to the beam wall and the track plates are opposite, and the track plates (3 b) of the two lifting lug plates are respectively embedded in the track grooves (4) at two sides of the beam body; the connecting plate (3 d) is vertically fixed between the inner side plate surfaces of the two lifting lug plates (3 a), so that the two lifting lug plates (3 a) are connected and fixed into a whole; four connecting hanging columns (3 c) are uniformly distributed on the outer side plate surfaces of the two lifting lug plates (3 a), and the two connecting hanging columns (3 c) on each lifting lug plate (3 a) are symmetrically and vertically fixed on the lifting lug plate (3 a).
3. The single-lifting-point turning tool for the impeller of the high-capacity wind generating set according to claim 1, wherein the turning lifting hook (9) comprises a vertically arranged hanging hook plate (9 a), hanging hook holes (9 b) and fixed pulleys (9 c) are arranged on the hanging hook plate (9 a) at intervals along the perpendicular bisector, a movable pulley (9 d) is arranged below the fixed pulleys (9 c), the movable pulley (9 d) is rotatably arranged on a movable pulley frame, and the bottom end of the movable pulley frame is hinged with a lifting hook (9 e); the turning-over lifting hook (9) is arranged on the turning-over lifting hook adjusting lifting column (7) in a penetrating way through a hanging hook hole (9 b), and the winch (11) is fixed on the beam body in a mode that the central axis of the steel wire rope roller and the central axis of the fixed pulley (9 c) are positioned on the same horizontal plane; one end of the hoisting wire rope (8) is fixed on the fixed pulley (9 c), the other end of the hoisting wire rope sequentially bypasses the movable pulley (9 d) and the fixed pulley (9 c), and then horizontally extends to the winch (11) to be out, and is wound on a wire rope roller of the winch in a winding manner.
4. The single-lifting-point turning tool for the impeller of the high-capacity wind generating set according to claim 1, wherein annular limiting caps are fixedly connected with the ends of each turning lifting hook adjusting lifting column (7), each fixing lifting column and each connecting lifting column (3 c) in a threaded manner.
5. The single-lifting-point turning tool for the impeller of the high-capacity wind generating set according to claim 1, wherein the opening positions of the track grooves (4) are as follows: the movable lifting lug (3) can move to the position that the center point of the movable lifting lug is positioned right above any overturning lifting hook adjusting lifting column (7), and the movable lifting lug (3) can move to the position that the center point of the movable lifting lug is positioned right above the fixed lifting column.
6. A construction method implemented by adopting the single-lifting-point turning tool for the impeller of the high-capacity wind generating set according to any one of claims 1 to 5, which is characterized by comprising the following steps:
s1, hanging a turning lifting hook (9) on a proper turning lifting hook adjusting hanging column (7) according to the size of an impeller to be hoisted, and adjusting the position of a movable lifting lug (3) in a track groove (4) through a hydraulic telescopic oil cylinder (2), so that the center point of the movable lifting lug (3) is positioned right above the turning lifting hook adjusting hanging column (7) hanging the turning lifting hook (9);
s2, the crane moves the main hook head to the upper part of the tool, and two annular hanging strips are used for respectively connecting the main hook head and a movable lifting lug (3) of the tool; lifting the crane, slowly lifting the tool to a position at least 0.5m away from the main deck surface, and observing the state of the lifting tool; when the state of the lifting appliance is normal, the single lifting point type turning tool is lifted to the upper part of the impeller by the crane, the turning lifting hook is connected with the turning lifting point of the impeller by using one annular hanging strip, and the fixed lifting column is connected with the main lifting point of the impeller by using the other annular hanging strip;
s3, the crane continues to lift until the impeller is slowly lifted to a height of at least 0.5m from the main deck surface, and the state of the impeller is observed: 1) If the state of the impeller is abnormal after lifting, the impeller is lowered onto the main deck again, and the position of the movable lifting lug (3) in the track groove (4) is adjusted; 2) If the impeller is in a normal state, continuing lifting until the impeller is lifted to a turnover height horizontally;
s4, controlling a winch (11) to pay out the hoisting steel wire rope (8) so that the turning-over lifting hook (9) is gradually lowered; meanwhile, the hydraulic telescopic oil cylinder (2) is continuously controlled to gradually adjust the position of the movable lifting lug (3) in the track groove (4), so that the lifting force of the crane and the gravity of a hung object are always on the same vertical line until the impeller finishes turning over; the crane horizontally moves, and the impeller after turning over is lifted to the engine room generator assembly; then the crane slowly descends to enable the impeller and the cabin generator assembly to be in butt joint installation;
s5, after the impeller is in butt joint and installation, a piston rod of the hydraulic telescopic oil cylinder (2) is controlled to retract, so that the movable lifting lug is restored to the initial position; and (3) dismantling the annular hanging strip between the fixed hanging column and the main hanging point of the impeller, controlling a winch (11) to retract a hoisting steel wire rope (8), lifting the tooling by the crane, returning to the ship, and placing the tooling back to the ship deck storage position.
7. The construction method according to claim 6, wherein in step S4, the lowering of the hoisting wire rope (8) is performed at a constant speed in synchronization with the extension of the hydraulic telescopic cylinder (2).
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|---|---|---|---|
| CN202311182391.9A CN116902774B (en) | 2023-09-14 | 2023-09-14 | Single-hanging-point turning tool for impeller of high-capacity wind generating set and construction method of single-hanging-point turning tool |
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| CN202311182391.9A CN116902774B (en) | 2023-09-14 | 2023-09-14 | Single-hanging-point turning tool for impeller of high-capacity wind generating set and construction method of single-hanging-point turning tool |
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