CN112125118B - Large-scale wind generating set main shaft assembly overturning method and tool - Google Patents
Large-scale wind generating set main shaft assembly overturning method and tool Download PDFInfo
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- CN112125118B CN112125118B CN202010928038.0A CN202010928038A CN112125118B CN 112125118 B CN112125118 B CN 112125118B CN 202010928038 A CN202010928038 A CN 202010928038A CN 112125118 B CN112125118 B CN 112125118B
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- main shaft
- lifting appliance
- shaft assembly
- hook
- generating set
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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
- B66C1/108—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
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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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
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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
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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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)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a method and a tool for overturning a main shaft assembly of a large-scale wind generating set, and the technical scheme is as follows: the method comprises the following steps: fixing a small end lifting appliance with the small end of the main shaft, and connecting the small end lifting appliance with a main hook of the crown block; hoisting a main hook of the crown block to set the distance between the main shaft and the ground; connecting a large-end lifting appliance with the large end of the main shaft, and connecting the large-end lifting appliance with an auxiliary hook of the overhead travelling crane; lifting the auxiliary hook of the overhead travelling crane, and stopping the auxiliary hook of the overhead travelling crane when the main shaft is turned to a set angle; and the main hook of the crown block falls down until the main shaft assembly is in a horizontal state. The invention solves the problem that the existing factory conditions do not meet the overturning problem of the large-tonnage main shaft assembly, and realizes the overturning possibility of the subsequent large-scale wind generating set.
Description
Technical Field
The invention relates to the technical field of large-scale wind driven generators, in particular to a method and a tool for overturning a main shaft assembly of a large-scale wind driven generator set.
Background
In a wind generating set, a main shaft assembly is a core component of a double-fed wind generator, plays a role of connecting an impeller and a gear box and bears transmission torque. In the production process, the main shaft needs to be erected firstly, then the wind wheel lock disc, the inner seal, the bearing seat assembly and the like are sequentially installed, and after the main shaft assembly is installed, the main shaft assembly needs to be horizontally placed so as to be assembled with the gear box.
The main shaft assembly is vertically arranged to be horizontally arranged, the existing method utilizes a double-trolley crown block and a large end lifting appliance and a small end lifting appliance to complete overturning, the small end lifting appliance is arranged at the small end of the main shaft, and a lifting belt of the small end lifting appliance is hung on a main hook. The main shaft assembly is hoisted by the main hoisting hook, the large-end sling is installed at the position of the wind wheel lock disc, the sling of the large-end sling is hung on the auxiliary hook, and the main shaft is laid flat by hoisting the auxiliary hook.
The inventor finds that as the research and development machine type is larger and larger, the bearing capacity of the factory building overhead traveling crane is limited, and the small hook of the turnover overhead traveling crane is overloaded due to stress by using the original scheme, so that safety accidents are easily caused by the sliding hook. If a main shaft horizontal assembly process is adopted, all tool hoisting riggings are redesigned, the new process is immature, and the main shaft assembly quality is difficult to guarantee.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a tool for overturning a main shaft assembly of a large-scale wind generating set, which solve the problem that the existing factory conditions do not meet the overturning problem of the large-tonnage main shaft assembly and realize the possibility of overturning the follow-up large-scale wind generating set.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides a method for turning over a main shaft assembly of a large wind turbine generator system, including:
fixing a small end lifting appliance with the small end of the main shaft, and connecting the small end lifting appliance with a main hook of the crown block;
hoisting a main hook of the crown block to set a distance from the main shaft assembly to the ground;
connecting a large-end lifting appliance with the large end of the main shaft, and connecting the large-end lifting appliance with an auxiliary hook of the overhead travelling crane;
lifting the auxiliary hook of the overhead crane, and stopping the auxiliary hook of the overhead crane when the main shaft assembly is turned to a set angle;
and the main hook of the crown block falls down until the main shaft assembly is in a horizontal state.
As a further implementation mode, a main hook of the crown block is hoisted, so that the main shaft is 500-600mm away from the ground.
As a further implementation mode, the large-end lifting appliance is pushed to the position below the large end of the main shaft by using the hydraulic lifting trolley, and the large-end lifting appliance is installed by adjusting the hydraulic lifting trolley.
As a further implementation mode, the hydraulic lifting trolley is moved away after the large-end lifting appliance is connected with the auxiliary hook of the overhead crane.
As a further implementation mode, when the main shaft assembly is turned to 35-45 degrees, the auxiliary hook of the overhead travelling crane stops.
As a further implementation mode, the small-end lifting appliance is connected with the small end of the main shaft through a bolt, and a hanging strip of the small-end lifting appliance is hung on a main hook of the crown block.
As a further implementation mode, the large-end lifting appliance is connected with the outer side of the large end of the main shaft through a bolt, and a lifting belt of the large-end lifting appliance is hung on an auxiliary hook of the overhead crane.
As a further implementation manner, when the spindle assembly is in a horizontal state, the spindle assembly after being turned over is placed on the storage tool for later use.
In a second aspect, an embodiment of the present invention further provides a large wind turbine generator system spindle assembly turning tool, including:
the large-end lifting appliance is used for lifting the large end of the main shaft;
the small-end lifting appliance is used for lifting the small end of the main shaft;
and the hydraulic lifting trolley is used for pushing the large-end lifting appliance to the bottom of the large end of the main shaft.
As a further implementation mode, one end of the large-end lifting appliance is detachably connected with the large end of the main shaft, and the other end of the large-end lifting appliance is connected with the overhead crane auxiliary hook; one end of the small-end lifting appliance is detachably connected with the small end of the main shaft, and the other end of the small-end lifting appliance is connected with the main hook of the crown block.
The embodiment of the invention has the following beneficial effects:
(1) According to one or more embodiments of the invention, the force arm of the gravity center of the main shaft and the main shaft lifting appliance at the large end of the main shaft is lengthened, so that the stress of the small hook is within the rated load range, the main shaft of the large wind generating set is turned over, and the assembly efficiency of the large wind generating set is improved;
(2) One or more embodiments of the invention solve the problem that the existing factory building conditions do not meet the overturning problem of the large-tonnage main shaft assembly, and simultaneously realize the overturning possibility of the subsequent large-scale wind generating set;
(3) The turnover tool in one or more embodiments of the invention only comprises a large-end lifting appliance, a small-end lifting appliance and a hydraulic lifting trolley, has a simple structure, ensures the assembly quality and greatly saves the cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
FIG. 1 is a flow diagram in accordance with one or more embodiments of the invention;
FIG. 2 is a schematic illustration of a spindle assembly according to one or more embodiments of the present disclosure in a vertical position;
FIG. 3 is a schematic illustration of a large end spreader according to one or more embodiments of the present invention placed on a hydraulic lift trolley;
FIG. 4 is a schematic illustration of a spindle assembly according to one or more embodiments of the present disclosure flipped to a horizontal position;
FIG. 5 is a diagram showing the distance between the large end spreader of the spindle and the moment arm of the center of gravity in the conventional overturning manner;
FIG. 6 is a diagram of the spindle big end spreader distance moment arm size from the center of gravity for a flipping method according to one or more embodiments of the present disclosure;
the hydraulic lifting trolley comprises a main shaft assembly 1, a small end lifting appliance 2, a large end lifting appliance 3, a lifting belt 4, a lifting belt 5 and a hydraulic lifting trolley.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
The terms "mounted", "connected", "fixed", and the like in this application should be understood broadly, and for example, may be fixedly connected, detachably connected, or integrated; the two components can be connected directly or indirectly through an intermediate medium, or the two components can be connected internally or in an interaction relationship, and it is understood that the terms used in the present invention have the specific meanings given to the specific situations.
The first embodiment is as follows:
according to the embodiment, the correctness of theoretical analysis is fully verified through analyzing the stress of the lifting appliance in the overturning process and carrying out experimental verification on the theoretical analysis, so that the overturning method of the main shaft assembly of the large-scale wind generating set is provided, and the overturning problem that the existing workshop conditions cannot meet the large-tonnage main shaft assembly is solved.
Specifically, as shown in fig. 1, the turning process in this embodiment is as follows:
step (1) as shown in fig. 2, a small end lifting appliance 2 is fixed with the small end of the main shaft through a bolt, and a lifting belt 4 of the small end lifting appliance is hung on a main hook of the crown block.
Further, the small end lifting appliance 2 is lifted to the main shaft small end mounting hole by a crown block, and after the holes are aligned, the small end lifting appliance 2 is fixed on the main shaft assembly 1 by bolts.
And (2) hoisting the main hook of the crown block to enable the main shaft assembly 1 to be about 500-600mm away from the ground, so that enough space is provided for installing the large-end lifting appliance 3.
And (3) as shown in fig. 3, pushing the large-end lifting appliance 3 placed on the hydraulic lifting trolley 5 in advance into the bottom of the large end of the main shaft, and finishing the installation of the large-end lifting appliance 3 by adjusting the hydraulic lifting trolley 5.
Furthermore, the hydraulic lifting trolley 5 is lifted through a pedal plate on the hydraulic lifting trolley 5, the large-end lifting appliance 3 is attached to the large end of the main shaft, the large-end lifting appliance 3 is aligned with the large end of the main shaft through the hydraulic lifting trolley 5, and the large-end lifting appliance 3 is fixed on the main shaft through bolts. Hanging the hanging strip 4 of the big end lifting appliance 3 on the auxiliary hook of the overhead traveling crane, and moving the hydraulic lifting trolley 5. In this embodiment, the suspension points of the slings 4 of the big end spreader 3 are located at the end edge positions of the big end spreader 3.
As shown in figure 5, by utilizing the existing overturning mode, the distance between the main shaft large-end lifting appliance and the gravity arm is 1138.5mm, the arm is shorter, the stress at the main shaft large-end is about 24.3t, the load is close to the rated load, and the pulley is easy to appear. As shown in fig. 6, in this embodiment, the force applied to the large end is reduced by extending the force arm, the distance from the large end spreader 3 to the force arm of the center of gravity is 1927mm, the force arm is longer, and the force applied to the large end of the main shaft is about 19.5t.
And (3) lifting the auxiliary hook of the overhead travelling crane, and stopping the auxiliary hook of the overhead travelling crane when the main shaft assembly 1 is turned to 35-45 degrees.
Because the height of the main shaft assembly 1 is higher, if only the auxiliary hook is raised, the main shaft assembly turned into the horizontal state is about 4 meters away from the ground, and the height is too high, so that the main shaft assembly is dangerous, and the overhead traveling crane is not favorable for an operator to watch the situation at any time. Therefore, the main shaft assembly 1 is turned over to 35-45 degrees when the auxiliary hook of the overhead traveling crane is lifted.
Step (4), the main hook of the crown block falls down until the main shaft assembly 1 is in a horizontal state, as shown in fig. 4; and when the main shaft assembly 1 is in a horizontal state, placing the overturned main shaft assembly 1 on a storage tool for later use.
In the embodiment, the force arm of the gravity center of the main shaft large-end lifting appliance 3 and the main shaft assembly 1 is lengthened, so that the stress of the small hook is within a rated load range, the main shaft of the large wind generating set is turned over, and the assembly efficiency of the large wind generating set is improved.
Example two:
the embodiment provides a large-scale wind generating set spindle assembly turning tool, which comprises a large-end lifting appliance 3, a small-end lifting appliance 2 and a hydraulic lifting trolley 5, wherein the large-end lifting appliance 3 is used for lifting the large end of a spindle; the small end lifting appliance 2 is used for lifting the small end of the main shaft. The hydraulic lifting trolley 5 is used for pushing the big end lifting appliance 3 to the bottom of the big end of the main shaft, and the installation of the big end lifting appliance 3 is completed by adjusting the hydraulic lifting trolley 5.
One end of the large-end lifting appliance 3 is detachably connected with the large end of the main shaft, such as through bolts. The big end lifting appliance 3 comprises a big end lifting lug and a lifting belt 4, the big end lifting lug comprises a connecting part and a suspension part, the connecting part is used for connecting a bearing seat lifting lug of the main shaft assembly, and the suspension part is used for connecting the lifting belt 4. The suspension portion is perpendicular to the connecting portion, and in this embodiment, the connecting portion is a rectangular plate and the connecting portion is a triangular plate.
The connecting part is provided with a mounting hole for connecting the hanging strip 4; the mounting hole is arranged close to the edge of the connecting part so as to prolong the force arm of the gravity center of the large-end lifting appliance 3 and the main shaft assembly 1. The hanging strip 4 of the large-end hanger 3 is connected with the auxiliary hook of the overhead traveling crane in a hanging way. One end of the small-end lifting appliance 2 is detachably connected with the small end of the main shaft, such as by bolts; the hanging strip 4 of the small end lifting appliance 2 is connected with the main hook of the crown block.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A method for overturning a main shaft assembly of a large wind generating set is characterized in that a tool for overturning the main shaft assembly of the large wind generating set is adopted, and the method comprises the following steps:
the large-end lifting appliance is used for lifting the large end of the main shaft;
the small end lifting appliance is used for lifting the small end of the main shaft;
the hydraulic lifting trolley is used for pushing the large-end lifting appliance to the bottom of the large end of the main shaft;
the turning method of the large wind generating set main shaft assembly comprises the following steps:
fixing a small end lifting appliance with the small end of the main shaft, and connecting the small end lifting appliance with a main hook of the crown block;
hoisting a main hook of the crown block to set a distance from the main shaft assembly to the ground;
connecting a large-end lifting appliance with the large end of the main shaft, and connecting the large-end lifting appliance with an auxiliary hook of the overhead travelling crane;
the force arm of the gravity center of the main shaft and the lifting appliance at the large end of the main shaft is lengthened, so that the stress of the auxiliary hook is in a rated load range;
lifting the auxiliary hook of the overhead crane, and stopping the auxiliary hook of the overhead crane when the main shaft assembly is turned over to 35-45 degrees;
and the main hook of the crown block falls down until the main shaft assembly is in a horizontal state.
2. The turning method for the main shaft assembly of the large wind generating set according to claim 1, wherein the main hook of the crown block is lifted to make the main shaft assembly 500-600mm away from the ground.
3. The turning method of the main shaft assembly of the large wind generating set according to claim 1, wherein the large end lifting tool is pushed to the position below the large end of the main shaft by using a hydraulic lifting trolley, and the large end lifting tool is installed by adjusting the hydraulic lifting trolley.
4. The turning method of the main shaft assembly of the large wind generating set according to claim 3, characterized in that the hydraulic lifting trolley is removed after the large end lifting appliance is connected with the auxiliary hook of the overhead crane.
5. The turning method of the main shaft assembly of the large wind generating set according to claim 1, wherein the small end lifting appliance is connected with the small end of the main shaft through a bolt, and a hanging strip of the small end lifting appliance is hung on a main hook of the crown block.
6. The turning method of the main shaft assembly of the large wind generating set according to claim 1, wherein the large end lifting appliance is connected with the outer side of the large end of the main shaft through a bolt, and a lifting belt of the large end lifting appliance is hung on an auxiliary hook of the overhead crane.
7. The method for turning over the main shaft assembly of the large wind generating set according to claim 1, wherein when the main shaft assembly is in a horizontal state, the turned over main shaft assembly is placed on a storage tool for standby.
8. The turning method of the main shaft assembly of the large wind generating set according to claim 1, wherein one end of the large-end lifting appliance is detachably connected with the large end of the main shaft, and the other end of the large-end lifting appliance is connected with the auxiliary hook of the overhead crane; one end of the small-end lifting appliance is detachably connected with the small end of the main shaft, and the other end of the small-end lifting appliance is connected with the main hook of the crown block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928038.0A CN112125118B (en) | 2020-09-07 | 2020-09-07 | Large-scale wind generating set main shaft assembly overturning method and tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928038.0A CN112125118B (en) | 2020-09-07 | 2020-09-07 | Large-scale wind generating set main shaft assembly overturning method and tool |
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| Publication Number | Publication Date |
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| CN112125118A CN112125118A (en) | 2020-12-25 |
| CN112125118B true CN112125118B (en) | 2022-12-13 |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838037B (en) * | 2011-06-23 | 2015-06-03 | 三一电气有限责任公司 | Turnover hoisting method for wind turbine main shaft, and apparatus thereof |
| CN109911764B (en) * | 2019-03-27 | 2020-03-13 | 长光卫星技术有限公司 | Multifunctional overturning hoisting equipment |
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