CN107954309B - Special lifting appliance for lifting wind generating set and lifting method - Google Patents
Special lifting appliance for lifting wind generating set and lifting method Download PDFInfo
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- CN107954309B CN107954309B CN201711240508.9A CN201711240508A CN107954309B CN 107954309 B CN107954309 B CN 107954309B CN 201711240508 A CN201711240508 A CN 201711240508A CN 107954309 B CN107954309 B CN 107954309B
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- Prior art keywords
- hanging
- lifting
- hub
- generating set
- wind generating
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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
- B66C1/18—Band-type slings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a special lifting appliance for lifting a wind generating set and a lifting method, comprising the following steps: the lifting beam comprises a main lifting beam section and a cross beam section which are arranged in a mutually crossed manner, and a main lifting beam lifting point is arranged at one end of the main lifting beam section; the proportional lever is hinged with the main hanging beam section, and the hinged point of the proportional lever is close to the hanging point of the main hanging beam; the first ends of the two blade hanging belts are respectively and correspondingly sleeved on the two blades; the second ends of the two blade hanging belts are connected with one end of the proportional lever; the first end of the wheel hub hanging strip is connected with the wheel hub, and the second end of the wheel hub hanging strip is connected with the other end of the proportional lever; the length adjuster is arranged on the hub hanging belt and used for adjusting the length of the hub hanging belt; the first end of the first cabin sling and the first end of the second cabin sling are respectively connected with the cabin; the second ends of the first and second nacelle harnesses are connected at both ends of the cross member, respectively. The invention has the advantages of simple structure, convenient operation, and saving the installation period of the wind generating set and the labor intensity of workers.
Description
Technical Field
The invention relates to the technical field of loading and unloading lifting devices, in particular to a special lifting appliance for lifting a wind generating set and a lifting method.
Background
In recent years, with the development of wind power technology and the gradual improvement and improvement of unit performance, the wind power unit is more and more economical and efficient, the single unit capacity is also increased continuously, the number of the units and the floor area are gradually reduced under the same installed capacity, and the investment of infrastructure is greatly saved. However, as the wind power industry has further developed, the development of land wind farms has become increasingly saturated. And along with the gradual increase of wind turbine generator unit capacity, the length and the weight of each part of unit also constantly increase, this greatly increased unit transportation and installation degree of difficulty and cost. Compared with the prior art, the offshore wind field has the advantages of high wind speed, low turbulence, small wind shear and the like, and the offshore wind turbine has the characteristics of larger impeller diameter, low rated wind speed, low hub height and high tip speed ratio under the same rated power, so that the generated energy of the unit can be greatly improved, and the service life of the unit can be prolonged.
FIG. 1 is a schematic view of a conventional method for hoisting a wind turbine generator set in the prior art; the wind generating set comprises a cabin 40 and a generator arranged inside the cabin 40; a hub 30 disposed at one end of the nacelle 40, three blades 20, 21, and 22 uniformly disposed around the hub 30; one end of the lifting belt 11 is directly connected with the lifting eye on the outer wall of the hub 30, one ends of the lifting belts 12 of the engine room are correspondingly arranged on the lifting eye of the engine room 40, the first end of the lifting belt 10 is connected with the hub lifting belt 11 and the other ends of the two engine room lifting belts 12, and the second end of the lifting belt 10 is connected with a lifting appliance of the crane.
The lifting appliance is directly connected with a hub of the wind generating set and the outer wall of the engine room, and because the bearing capacity of the hub of the wind generating set and the outer wall of the engine room is limited, and the weight of the whole wind generating set is increased along with the increase of the combined weight of the wind generating set, namely the blades are lengthened, the weight of the engine room and the hub is increased, and the like, the outer wall is easily stressed and deformed due to the traction of the lifting lugs in the lifting process, the strength of the lifting point of the hub possibly exceeds or is close to the bearing limit of a hub material, and therefore the outer wall of the wind generating set is.
Disclosure of Invention
The invention aims to provide a special lifting appliance for lifting a wind generating set and a lifting method, and aims to solve the problem that a hub is overloaded when the wind generating set is lifted.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the utility model provides a hoist special lifting device of hoist and mount wind generating set, contains: the hanging beam comprises a main hanging beam section and a cross beam section which are arranged in a mutually crossed mode, and a main hanging beam hanging point is arranged at one end of the main hanging beam section. And the proportional lever is hinged with the main hanging beam section, and the hinged point of the proportional lever is close to the hanging point of the main hanging beam. The first ends of the first and second blade hanging strips are respectively sleeved on two blades arranged on the corresponding wind driven generator group; the second ends of the first and second blade hanging strips are connected with one end of the proportional lever. And the first end of the hub hanging strip is connected with the hub, and the second end of the hub hanging strip is connected with the other end of the proportion lever. And the length adjuster is arranged on the hub hanging belt and is used for adjusting the length of the hub hanging belt. The first end of the first cabin sling and the first end of the second cabin sling are respectively connected with the cabin; the second ends of the first and second nacelle harnesses are connected at both ends of the cross beam, respectively.
Preferably, the main hanging beam section and the cross beam section are orthogonally arranged, and the hanging beam is in a cross frame shape.
Preferably, the two ends of the beam section are respectively provided with a beam lifting point, or the center of the beam section is provided with a beam lifting point.
Preferably, the special spreader further comprises: the first end of the first hanging strip is connected with the hanging point of the main hanging beam; and the first end of the second hanging strip is connected with the hanging point of the cross beam. The second ends of the first and second straps are connected to a hoist carried by a crane above the lifting beam.
Preferably, the proportional lever is freely rotatable about a hinge point in a vertical plane containing the proportional lever axis.
The other technical scheme of the invention is as follows: a hoisting method of a wind generating set comprises the following processes: the special lifting appliance is adopted as the transition connection between the self-carrying lifting appliance of the crane and the wind generating set; determining the weight of the wind generating set, wherein the weight value of the wind generating set is the external load; and respectively testing the yield limits of the blade and the hub material, calculating the position of a hinge point of the proportional lever and the main hanging beam section according to the external load and the yield limits of the blade and the hub material and the lever principle, and determining the position of a fulcrum of the proportional lever. And after the special lifting appliance is connected with the wind generating set in a lifting way, the special lifting appliance is lifted.
Preferably, when the strength of the stressed position of the hub is larger than or equal to the yield limit of the hub material, the position of the hinge point of the lever with the preset proportion can be adjusted towards the direction far away from the hub hoisting point until the strength of the stressed position of the hub meets the yield limit requirement of the hub material; or when the strength of the stressed position of the blade is larger than or equal to the yield limit of the blade material, the position of the hinge point of the preset proportion lever can be adjusted towards the direction close to the hub hanging point until the strength of the stressed position of the blade meets the yield limit requirement of the blade material.
Compared with the prior art, the invention has the following advantages:
the invention reduces the load of each lifting point by decomposing a single load point into multiple load points, and the proportional lever arranged in the structure of the invention can proportionally distribute the load of each load point.
The invention can effectively reduce the problem of the hub hanging point of the wind generating set or the load of the root part of the blade and prevent the hung equipment from being damaged.
The invention is suitable for hoisting large offshore wind generating sets with large power and large diameter wind wheels or hoisting wind generating sets or equipment with larger weight.
The length of the wheel hub hanging strip is adjusted through the length adjuster, and one of the wheel hub hanging strip and the wheel hub hanging strip can make up for manufacturing errors of other hanging strips and a lifting appliance, and the influence of the length of the hanging strip on a lifting appliance system is weakened; and the second one can indirectly adjust the included angle between the installation surface of the hung wind generating set and the horizontal plane.
The invention has the advantages of simple structure, convenient operation and capability of greatly saving the installation period of the wind generating set and the labor intensity of workers.
Drawings
FIG. 1 is a schematic structural diagram of a lifting appliance for lifting a wind generating set in the prior art;
fig. 2 is a schematic structural diagram of the special lifting appliance for lifting the wind generating set of the invention.
Detailed Description
The present invention will now be further described by way of the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings.
As shown in fig. 2, the special lifting appliance for lifting a wind generating set of the present invention comprises:
a hanging beam which is an intermediate body of load transmission; the hanging beam comprises a main hanging beam section 200 and a cross beam section 201 which are orthogonally arranged, and the whole hanging beam is in a cross frame shape. One end of the main hoisting beam section 200, which is far away from the cross beam section 201, is provided with a main hoisting beam hoisting point, and two ends of the cross beam section 201 are respectively provided with a cross beam hoisting point; a first hanging strip 100 and a pair of second hanging strips 101, wherein the first end of the first hanging strip 100 is connected with the hanging point of the main hanging beam; the first ends of the two second hanging strips 101 are respectively and correspondingly connected with the two beam hanging points; the second ends of the first and second slings 100 and 101 are connected to the hoist of the crane above the lifting beam;
a proportional lever 300, which is hinged to the main beam section 200, in this embodiment, with its hinge point opposite the main beam suspension point. In this embodiment, the proportional lever 300 is freely rotatable about the hinge point in a plane formed by the axis of the proportional lever 300 and the axis of the main beam section 200, i.e., in a vertical plane containing the axis of the proportional lever 300.
According to the lever principle, under the condition that the external load is not changed, namely the weight of the wind generating set is determined, the position of a hinge point of the proportional lever 300 and the main hanging beam section 200 is calculated according to the maximum load which can be borne by the blade hanging point and the hub hanging point, namely the position of a fulcrum of the proportional lever is determined. And distributing the loads to be borne by the blade suspension points and the hub suspension points according to the determined proportion.
The first end of the first blade sling 102 is sleeved on the first blade 20, the first end of the second blade sling 103 is sleeved on the second blade 21, and the second ends of the first blade sling 102 and the second blade sling 103 are connected with one end of the proportional lever 300.
A hub suspension belt 106, which is connected at a first end to the hub 30, forms a hub suspension point on the hub, and is connected at a second end to the other end of the proportional lever 300.
A length adjuster 400 provided on the hub harness 106 for adjusting a length of the hub harness 106.
A first cabin sling 104 and a second cabin sling 105, wherein the first ends of the first cabin sling 104 and the second cabin sling 105 are respectively connected with the cabin; the second ends of the first nacelle harness 104 and the second nacelle harness 105 are respectively arranged at two ends of the beam section 201. In the present embodiment, the line connecting the two suspension points formed by the connection of the first nacelle harness 104 and the second nacelle harness 105 to the nacelle is parallel to the beam section 201.
In the present embodiment, the nacelle straps, the hub straps, the blade straps and the first and second straps may be the same flexible straps or straps made of different materials.
In this embodiment, the hanging beam may further have a main hanging beam hanging point at an end of the main hanging beam section 200 far away from the cross beam section 201, and a cross beam hanging point is disposed at the center of the cross beam section 201.
In this embodiment, under the condition that the external load is not changed, that is, after the weight of the wind turbine generator system is determined, the yield limits of the blade and the hub material are tested, the yield limits of the blade and the hub material according to the weight of the wind turbine generator system and the yield limits of the blade and the hub material are recorded, and the position of the hinge point of the proportional lever 300 and the main beam section 200 is calculated, that is, the position of the fulcrum of the proportional lever is confirmed. After the position of the fulcrum is determined, the strength of the stressed position of the blade and the stressed position of the hub is determined according to the lever principle, or the tensile values of the stressed position of the blade and the stressed position of the hub are determined.
After the special lifting appliance is connected with the wind generating set in a lifting mode, a lifting test can be carried out, when the strength of the stress position of the hub is larger than or equal to the yield limit of the hub material, the position of the hinge point of the lever with the preset proportion can be adjusted towards the direction far away from the lifting point of the hub until the strength of the stress position of the hub meets the yield limit requirement of the hub material; or when the strength of the stressed position of the blade is larger than or equal to the yield limit of the blade material, the position of the hinge point of the preset proportion lever can be adjusted towards the direction close to the hub hanging point until the strength of the stressed position of the blade meets the yield limit requirement of the blade material.
The length of the wheel hub hanging strip is adjusted through the length adjuster, and one of the wheel hub hanging strip and the wheel hub hanging strip can make up for manufacturing errors of other hanging strips and a lifting appliance, and the influence of the length of the hanging strip on a lifting appliance system is weakened; and the second one can indirectly adjust the included angle between the installation surface of the hung wind generating set and the horizontal plane.
The mounting surface of the hung wind generating set is a surface which contains a central shaft of the hub and is parallel to the upper surface and/or the lower surface of the engine room.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (7)
1. The utility model provides a hoist wind generating set's special lifting device which characterized in that contains:
the lifting beam comprises a main lifting beam section and a cross beam section which are arranged in a mutually crossed manner, and a main lifting beam lifting point is arranged at one end of the main lifting beam section;
the proportional lever is hinged with the main hanging beam section, a hinged point of the proportional lever is close to a hanging point of the main hanging beam, and the position of the hinged point is adjustable;
the first ends of the first and second blade hanging strips are respectively sleeved on two blades arranged on the corresponding wind driven generator group; the second ends of the first and second blade hanging strips are connected with one end of the proportional lever;
the first end of the hub hanging belt is connected with the hub, and the second end of the hub hanging belt is connected with the other end of the proportional lever;
the length adjuster is arranged on the hub hanging belt and is used for adjusting the length of the hub hanging belt;
the first end of the first cabin sling and the first end of the second cabin sling are respectively connected with the cabin; the second ends of the first and second nacelle harnesses are connected at both ends of the cross beam, respectively.
2. The special lifting appliance for lifting the wind generating set according to claim 1,
the main hanging beam section and the cross beam section are orthogonally arranged, and the hanging beam is in a cross frame shape.
3. The special lifting appliance for lifting the wind generating set according to claim 1,
and beam hanging points are respectively arranged at the two ends of the beam section, or the center of the beam section is provided with the beam hanging points.
4. The special lifting appliance for lifting the wind generating set according to claim 3,
the special spreader further comprises: the first end of the first hanging strip is connected with the hanging point of the main hanging beam; the first end of the second hanging strip is connected with the hanging point of the cross beam;
the second ends of the first and second straps are connected to a hoist carried by a crane above the lifting beam.
5. The special lifting appliance for lifting the wind generating set according to claim 1,
the proportional lever is free to rotate about a hinge point in a vertical plane containing the axis of the proportional lever.
6. A hoisting method of a wind generating set is characterized by comprising the following steps: the special lifting appliance of any one of claims 1-5 is used as a transition connection between a self-carrying lifting appliance of a crane and a wind generating set;
determining the weight of the wind generating set, wherein the weight value of the wind generating set is the external load; the yield limit of the blade and hub materials were tested separately,
calculating the position of a hinge point of the proportional lever and the main hanging beam section according to external load, yield limit of materials of the blade and the hub and a lever principle, and determining the position of a fulcrum of the proportional lever;
and after the special lifting appliance is connected with the wind generating set in a lifting way, the special lifting appliance is lifted.
7. Hoisting method of a wind power plant according to claim 6, characterized in that said hoisting comprises the following processes:
when the strength of the stressed position of the hub is larger than or equal to the yield limit of the hub material, the position of the hinge point of the lever with the preset proportion can be adjusted towards the direction away from the hub hoisting point until the strength of the stressed position of the hub meets the yield limit requirement of the hub material;
or when the strength of the stressed position of the blade is larger than or equal to the yield limit of the blade material, the position of the hinge point of the preset proportion lever can be adjusted towards the direction close to the hub hanging point until the strength of the stressed position of the blade meets the yield limit requirement of the blade material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240508.9A CN107954309B (en) | 2017-11-30 | 2017-11-30 | Special lifting appliance for lifting wind generating set and lifting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240508.9A CN107954309B (en) | 2017-11-30 | 2017-11-30 | Special lifting appliance for lifting wind generating set and lifting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107954309A CN107954309A (en) | 2018-04-24 |
| CN107954309B true CN107954309B (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711240508.9A Active CN107954309B (en) | 2017-11-30 | 2017-11-30 | Special lifting appliance for lifting wind generating set and lifting method |
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| CN (1) | CN107954309B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550538B (en) * | 2019-09-27 | 2021-06-25 | 江苏金风科技有限公司 | Lifting appliance |
| WO2024067929A1 (en) * | 2022-09-30 | 2024-04-04 | Vestas Wind Systems A/S | A lifting arrangement and method for installing a component of a wind turbine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202848861U (en) * | 2012-10-08 | 2013-04-03 | 北京金风科创风电设备有限公司 | Impeller hoisting device for wind generating set |
| CN103601064B (en) * | 2013-10-30 | 2015-08-12 | 浙江大学 | A kind of blower fan list leaf blade hanging balance hanging beam |
| CN204823664U (en) * | 2015-08-04 | 2015-12-02 | 田明超 | Adjustable combination hoist |
| WO2017071719A1 (en) * | 2015-10-30 | 2017-05-04 | Vestas Wind Systems A/S | Blade lifting method and apparatus |
| CN205678265U (en) * | 2016-03-29 | 2016-11-09 | 江苏信泰机械有限公司 | A kind of lever balance suspension and support |
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| CN107954309A (en) | 2018-04-24 |
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Address after: 200241 Dongchuan Road, Shanghai, No. 555, building No. 8, floor, floor, No. Patentee after: Shanghai Electric Wind Power Group Co., Ltd Address before: 200241, 4 floor, building 555, 4 Dongchuan Road, Shanghai, Minhang District Patentee before: SHANGHAI ELECTRIC WIND POWER GROUP Co.,Ltd. |