CN111547630A - Crane for wind power generation installation and maintenance - Google Patents
Crane for wind power generation installation and maintenance Download PDFInfo
- Publication number
- CN111547630A CN111547630A CN202010521427.1A CN202010521427A CN111547630A CN 111547630 A CN111547630 A CN 111547630A CN 202010521427 A CN202010521427 A CN 202010521427A CN 111547630 A CN111547630 A CN 111547630A
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- CN
- China
- Prior art keywords
- crane
- electromagnet
- electromagnet adsorption
- wind power
- power generation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
- B66C23/30—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of telescopic elements
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
Abstract
The invention discloses a crane for installing and maintaining a wind driven generator, in particular to a crane for installing and maintaining a wind driven generator. The crane comprises a suspension arm, a slewing bearing and a crane lifting base, wherein the suspension arm is arranged on the crane lifting base through the slewing bearing; each group of electromagnet adsorption devices comprises a plurality of electromagnet adsorption units, each electromagnet adsorption unit is sequentially connected with a telescopic hydraulic cylinder through a hinge, and the inner wall of each electromagnet adsorption unit is arc-shaped and provided with an electromagnet. The invention has the advantages of simple structure, strong maneuverability and capability of reducing the installation and maintenance cost of the wind driven generator.
Description
Technical Field
The invention relates to a crane for installing and maintaining a wind driven generator, in particular to a crane for installing and maintaining a wind driven generator.
Background
Wind energy is a clean and pollution-free renewable energy source, is very environment-friendly by utilizing wind power to generate electricity, and has huge wind energy content, so that the wind energy is increasingly paid attention by various countries in the world. Offshore wind power is an important field of renewable energy development, is an important force for promoting wind power technology progress and industry upgrading, and is an important measure for promoting energy structure adjustment.
At present, a land wind driven generator is generally installed by a large crane, such as an automobile crane, a crawler crane, a tower crane and the like, and the overall height of the crane is required to be higher than that of the wind driven generator so as to complete installation and maintenance of the whole wind driven generator. The cost of a large crane is high, the structure of the crane is large, the period of transition, disassembly and assembly and transportation is long, the mobility is poor, and particularly, the installation and maintenance of fans of a distributed wind field are realized. The ocean wind driven generator generally adopts a large-scale hoisting ship to install and maintain the wind driven generator, and has very high installation and maintenance cost and poor maneuverability.
Disclosure of Invention
The invention aims to solve the technical problem of providing a small-sized crane for mounting and maintaining wind power generation, which has simple structure and strong maneuverability and can reduce the mounting and maintaining cost of the wind power generator.
The technical scheme adopted by the invention for solving the problems is as follows: the crane comprises a suspension arm, a slewing bearing and a crane lifting base, wherein the suspension arm is arranged on the crane lifting base through the slewing bearing; each group of electromagnet adsorption devices comprises a plurality of electromagnet adsorption units, each electromagnet adsorption unit is sequentially connected with a telescopic hydraulic cylinder through a hinge, and the inner wall of each electromagnet adsorption unit is arc-shaped and provided with an electromagnet.
The electromagnet adsorption unit consists of a main body part, a connecting rod part and a lug, wherein the inner wall of the main body part is in a circular arc shape, and an electromagnet is arranged on the inner wall; the connecting rod parts of the electromagnet adsorption units are sequentially connected through hinges, and the lugs are sequentially connected through telescopic hydraulic cylinders.
The inner walls of the main body parts of the electromagnet adsorption units are circular arcs with the same circle center.
In the invention, the adjacent lugs are symmetrically arranged with each other.
The lifting base of the crane is of a multi-section rod piece structure or a multi-section plate structure, and each group of electromagnet adsorption devices are fixedly arranged at the side surface of the top end of each section of rod piece or plate.
Compared with the prior art, the invention has the following beneficial effects: 1. the crane lifting base of the crane is a slender multi-section lifting structure, the lifting load mainly comprises a lifting bending moment and lifting weight, the lifting load is transmitted to the crane lifting base through the suspension arm and the slewing bearing, when the crane lifting base is lifted to the highest position for lifting operation, the length is calculated for reducing the buckling of the crane lifting base, and part of the lifting bending moment load is transmitted to the fan tower drum, so that an electromagnet adsorption device is fixedly installed at the side position of each section of the crane lifting base, and the crane lifting base and the fan tower drum jointly bear the lifting load, so that the bearing capacity of the crane is increased, and the design weight of the crane is further reduced; 2. each group of electromagnet adsorption devices comprises a plurality of electromagnet adsorption units which are sequentially connected through hinges and telescopic hydraulic cylinders, electromagnets are installed on the inner walls of the electromagnet adsorption units, power supports such as high-pressure hydraulic oil, electric power and the like are provided for the telescopic hydraulic cylinders and the electromagnets through power packs to control the electromagnet units to tightly hold or loosen the fan tower drum, during hoisting operation, the electromagnets of the electromagnet adsorption devices are electrified to enable the crane lifting base and the fan tower drum to be tightly connected and form a whole to jointly bear hoisting load, after hoisting is finished, the electromagnets of the electromagnet adsorption devices are powered off to disconnect the connection of the crane lifting base and the fan tower drum, and then the crane lifting base is retracted, so that the crane is separated from the fan tower drum to maintain and install the next fan; 3. compared with the existing large-scale crane, the crane has the advantages of simple and miniaturized structure, strong maneuverability, capability of greatly reducing the installation and maintenance cost of the wind driven generator, suitability for land and offshore wind driven generators, capability of being used after slightly modifying the foundation of the offshore wind driven generator, and wide application range.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view of a crane lifting base and an electromagnet adsorption device holding a fan tower in close proximity in embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of an electromagnet adsorption unit in embodiment 1 of the present invention.
Fig. 4 is a cross-sectional view of the electromagnet adsorption apparatus according to embodiment 1 of the present invention when the tower of the wind turbine is released.
Fig. 5 is a cross-sectional view of the electromagnet adsorption device holding a tower of a wind turbine in embodiment 1 of the present invention.
Fig. 6-9 are diagrams of the working process of embodiment 1 of the invention during climbing.
Fig. 10 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 11 is a cross-sectional view of a crane lifting base and an electromagnet adsorption device holding a fan tower tightly according to embodiment 2 of the present invention.
Detailed Description
Example 1:
referring to fig. 1 to 5, the present embodiment includes a boom 1, a slewing bearing 2, a crane lifting base 3, and a plurality of sets of electromagnet adsorption devices 4, the boom 1 is mounted on the crane lifting base 3 through the slewing bearing 2, and the crane lifting base 3 is a multi-section rod structure, which is a four-section rod in the present embodiment.
In this embodiment, the number of the electromagnet adsorption devices 4 is the same as the number of the rod members of the crane lifting base 3, and four groups of electromagnet adsorption devices 4 are provided. Each set of electromagnet adsorption device 4 is fixedly installed at the side position of the top end of each rod piece, and the fixed installation method can be welding, bolt connection or hinge, and the like, and the embodiment is welding fixation. When the requirement is met, if a specially-shaped fan tower barrel 9 is met, the electromagnet adsorption device 4 can be additionally arranged on the side face of the other position of the rod piece.
The electromagnet holding device 4 includes a plurality of electromagnet holding units 5, and in this embodiment, five electromagnet holding units 5. The electromagnet adsorbing unit 5 is composed of a main body part 501, a connecting rod part 502 and a lug 503, wherein the inner wall of the main body part 501 is in a circular arc shape, and a plurality of electromagnets 8 are mounted on the inner wall. A connecting rod part 502 extends from one side or two sides of the main body part 501, convex lugs 503 are arranged on the outer wall of the main body part 501, the connecting rod parts 502 of the electromagnet adsorption units 5 are sequentially connected through hinges 6, the lugs 503 are sequentially connected through telescopic hydraulic cylinders 7, and two ends of each telescopic hydraulic cylinder 7 are respectively connected with two adjacent lugs 503 through hinges.
More specifically, in each of the electromagnet adsorbing units 5 connected in sequence, the main body portions 501 of two electromagnet adsorbing units 5 located at the head end and the tail end extend out of the connecting rod portion 502 only toward one side, and the main body portions 501 of the remaining three electromagnet adsorbing units 5 extend out of the connecting rod portion 502 toward both sides. The inner walls of the main body 501 of the electromagnet holding units 5 are circular arcs with the same center of circle, and the center of circle is also the center of circle of the tower 9.
More specifically, in each electromagnet adsorption unit 5 connected in sequence, two main body portions 501 of the electromagnet adsorption units 5 located at the head end and the tail end are provided with one convex lug 503 on the outer wall, and the other three electromagnet adsorption units 5 are provided with two convex lugs 503 on the outer wall of the main body portions 501, and each adjacent lug 503 are arranged symmetrically.
In addition, the present embodiment also requires a power pack to provide power support for the crane, such as electricity and high pressure hydraulic oil, and the power pack is prior art and can be installed in the crane lifting base 3. The power pack transmits hydraulic oil to each telescopic hydraulic cylinder 7 through a hydraulic pipeline so as to drive the hydraulic cylinders to stretch; the power pack supplies current to energize the electromagnet 8.
More specifically, the initial state of the electromagnet adsorption device 4 is shown in fig. 4, when the crane needs to climb section by section, the power pack drives the telescopic hydraulic cylinder 7 to stretch and contract, so that the electromagnet adsorption units 5 connected in sequence tightly hold the outer wall of the fan tower cylinder 9, then the power pack supplies current to the electromagnet 8, so that the electromagnet adsorption units 5 are tightly connected with the outer wall of the fan tower cylinder 9, and at this time, the state of the electromagnet adsorption device 4 is shown in fig. 5. When the crane needs to descend section by section, the power pack stops supplying current to the electromagnets 8, the electromagnet adsorption units 5 are not tightly connected with the outer wall of the fan tower drum 9, then the power pack drives the telescopic hydraulic cylinders 7 to stretch, so that the sequentially connected magnet adsorption units 5 loosen the outer wall of the fan tower drum 9, and the state of the electromagnet adsorption device 4 is restored to the state shown in fig. 4.
Referring to fig. 6-9, taking maintenance of the fan (e.g. replacement of fan blades or other accessories) as an example, the crane lifting base 3 is four bars, which are respectively a first bar 31, a second bar 32, a third bar 33, and a fourth bar 34, and each bar is provided with an electromagnet adsorption device 4. The specific climbing process of the crane is as follows: the electromagnet adsorption device 4 on the first section of rod piece 31 is closed and electrified, so that the first section of rod piece 31 tightly holds the fan tower 9 and is tightly connected with the fan tower 9; after the second bar piece 32 climbs to the designated position, the electromagnet adsorption device 4 on the second bar piece 32 is closed and electrified, so that the second bar piece 32 tightly holds the outer wall of the fan tower 9 and is tightly connected with the outer wall of the fan tower 9; the third bar member 33 and the fourth bar member 34 operate as above; and finally, climbing the crane lifting base 3 to a specified height, and tightly connecting the crane lifting base 3 and the fan tower drum 9 to form a common structural unit so as to bear lifting load and carry out lifting operation through the lifting arm 1. When the crane descends, the operation is carried out according to the reverse sequence.
Example 2:
referring to fig. 10-11, the present embodiment includes a boom 1, a slewing bearing 2, a crane lifting base 3, and a plurality of sets of electromagnet adsorption devices 4, the boom 1 is mounted on the crane lifting base 3 through the slewing bearing 2, and the crane lifting base 3 is a multi-section plate structure, which is four sections of plates in the present embodiment.
The rest of the structure and the working process of this embodiment are the same as those of embodiment 1, and are not described again.
Claims (5)
1. The utility model provides a wind power generation installation is maintained and is used loop wheel machine, includes davit (1), slewing bearing (2), loop wheel machine lift base (3), and install on loop wheel machine lift base (3) through slewing bearing (2) davit (1), and loop wheel machine lift base (3) are multisection elevation structure, characterized by: the lifting device is characterized by also comprising a plurality of groups of electromagnet adsorption devices (4), wherein the electromagnet adsorption devices (4) are fixedly arranged at the side positions of the lifting base (3) of the crane; each group of electromagnet adsorption devices (4) comprises a plurality of electromagnet adsorption units (5), each electromagnet adsorption unit (5) is sequentially connected with a telescopic hydraulic cylinder (7) through a hinge (6), and the inner wall of each electromagnet adsorption unit (5) is arc-shaped and is provided with an electromagnet (8).
2. The crane for wind power generation installation and maintenance according to claim 1, wherein: the electromagnet adsorption unit (5) is composed of a main body part (501), a connecting rod part (502) and a lug (503), the inner wall of the main body part (501) is arc-shaped, and an electromagnet (8) is arranged on the inner wall; one side or two sides of the main body part (501) extend out to form a connecting rod part (502), convex lugs (503) are arranged on the outer wall of the main body part (501), the connecting rod parts (502) of the electromagnet adsorption units (5) are sequentially connected through hinges (6), and the lugs (503) are sequentially connected through telescopic hydraulic cylinders (7).
3. The crane for wind power generation installation and maintenance according to claim 2, wherein: the inner walls of the main body parts (501) of the electromagnet adsorption units (5) are circular arcs with the same circle center.
4. The crane for wind power generation installation and maintenance according to claim 2, wherein: the adjacent lugs (503) are arranged symmetrically with each other.
5. The crane for wind power generation installation and maintenance according to claim 1, wherein: the crane lifting base (3) is of a multi-section rod piece structure or a multi-section plate structure, and each group of electromagnet adsorption devices (4) is fixedly arranged at the side position of the top end of each section of rod piece or plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010521427.1A CN111547630A (en) | 2020-06-10 | 2020-06-10 | Crane for wind power generation installation and maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010521427.1A CN111547630A (en) | 2020-06-10 | 2020-06-10 | Crane for wind power generation installation and maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111547630A true CN111547630A (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010521427.1A Pending CN111547630A (en) | 2020-06-10 | 2020-06-10 | Crane for wind power generation installation and maintenance |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022231086A1 (en) * | 2021-04-26 | 2022-11-03 | 주식회사 파워엠엔씨 | Magnetic lifting type crane apparatus for installing and maintaining wind-power generation system |
-
2020
- 2020-06-10 CN CN202010521427.1A patent/CN111547630A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022231086A1 (en) * | 2021-04-26 | 2022-11-03 | 주식회사 파워엠엔씨 | Magnetic lifting type crane apparatus for installing and maintaining wind-power generation system |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210407 Address after: 215600 Leyu Town, Zhangjiagang City, Suzhou City, Jiangsu Province (Linjiang Green Industrial Park Science and Technology Innovation Park) Sitai energy technology (Suzhou) Co., Ltd Applicant after: Sitai energy technology (Suzhou) Co.,Ltd. Address before: 310018 3-2201, Ithaca haozeyuan, Jianggan District, Hangzhou City, Zhejiang Province Applicant before: Fan Xiaogang |
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