CN108757299B - Pre-buried bolt structure of slide positioning formula wind-powered electricity generation blade root - Google Patents
Pre-buried bolt structure of slide positioning formula wind-powered electricity generation blade root Download PDFInfo
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- CN108757299B CN108757299B CN201810446588.1A CN201810446588A CN108757299B CN 108757299 B CN108757299 B CN 108757299B CN 201810446588 A CN201810446588 A CN 201810446588A CN 108757299 B CN108757299 B CN 108757299B
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- blade root
- clamping
- groove
- positioning screw
- ring body
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- 230000005611 electricity Effects 0.000 title description 2
- 238000004806 packaging method and process Methods 0.000 claims abstract description 32
- 210000001503 joint Anatomy 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a pre-buried bolt structure of a sliding positioning type wind power blade root, which comprises a blade root, a packaging ring body, a pre-buried bolt, a locking screw, an elastic connector and a positioning screw rod, wherein the blade root is provided with a plurality of bolts; after the position of the embedded bolt is adjusted, the positioning screw rod can also pass through the sliding groove from the inner side of the blade root and is in threaded connection with the positioning screw hole, and meanwhile, the outer end part of the positioning screw rod is propped against the inner side surface of the blade root, so that the embedded bolt of the blade root is positioned through the positioning screw rod.
Description
Technical Field
The invention relates to a pre-buried bolt structure of a sliding positioning type wind power blade root.
Background
The wind power generation blade needs to be connected to the host machine through a blade root bolt, and the connection method mainly comprises two technologies of T-shaped bolts and embedded bolts. In the early stage of the wind power industry, the blade power is smaller, the blade root load is small, the T-shaped bolt mode is adopted, the process is simple, and the quality is easy to control. Along with the development of the times, the length and the power of the blade are gradually increased, and the defects of the connecting mode are also shown, such as the limited number of the blade root bolts caused by the larger distance between the blade root bolts, the lower bearing load of the blade root, the more solid waste generated by cutting and punching the blade root, and the like. And the embedded bolt connection mode can distribute more axial bolts under the same pitch circle diameter, so that the embedded bolt connection mode can bear larger load. The elimination of the post-treatment drilling step reduces the generation of waste materials. However, the existing embedded bolts are generally poured and fixed in the blade root, the number of the embedded bolts and the installation position cannot be adjusted after forming, so that the matched connecting hub is produced, sometimes the screw holes in the connecting hub are slightly deviated and scrapped, and if the embedded bolts on the blade root can be adjusted according to the actual conditions, the installation and production are more flexible.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the embedded bolt structure of the sliding positioning type wind power blade root is stable in connection and capable of flexibly adjusting positions.
In order to solve the problems, the invention adopts the following technical scheme:
a pre-buried bolt structure of a sliding positioning wind power blade root comprises a blade root, a packaging ring body, a pre-buried bolt, a locking screw, an elastic connector and a positioning screw; the blade root is in a ring structure; the packaging ring body is sleeved and fixed on the outer side of the blade root; a pre-buried bolt clamping groove is formed between the blade root and the packaging ring body; the embedded bolts are provided with a plurality of bolts; the bottom of the embedded bolt is provided with clamping teeth; the embedded bolts are slidably clamped in the embedded bolt clamping grooves through clamping teeth; the elastic connector is arranged in the embedded bolt clamping groove; the elastic connectors are distributed among the clamping teeth at the bottom of the embedded bolt; the elastic connector is elastically compressed and installed between the clamping teeth; the inner side of the blade root is provided with a sliding groove; the sliding groove is of an annular structure; the sliding groove is communicated with the embedded bolt clamping groove; the inner side of the clamping tooth is provided with a positioning screw hole; the positioning screw hole corresponds to the sliding groove; the inner diameter of the positioning screw hole is smaller than the height of the sliding groove; the positioning screw rod passes through the sliding groove from the inner side of the blade root and is in threaded connection with the positioning screw hole; the positioning screw rod is of a T-shaped structure; the outer end of the positioning screw rod is propped against the inner side surface of the blade root.
Further, the blade root is in a circular ring structure; the outer side of the upper part of the blade root is provided with an inner arc-shaped clamping ring groove; the packaging ring body is of a circular ring body structure; the inner side of the upper part of the packaging ring body is provided with an outer arc-shaped clamping ring groove; the packaging ring body is sleeved on the outer side of the blade root; the inner arc clamping ring groove and the outer arc clamping ring groove are corresponding in position and form an embedded bolt clamping groove; the inner arc-shaped clamping ring groove is communicated with the sliding groove.
Further, a plurality of locking threaded holes are formed in the outer side of the lower portion of the blade root; the lower part of the packaging ring body is provided with a plurality of locking through holes; the locking through hole corresponds to the locking threaded hole in position; the locking screw passes through the locking through hole from the outer side of the packaging ring body and is in threaded connection with the locking threaded hole.
Further, the packaging ring body and the locking screw are made of titanium alloy materials.
Further, the embedded bolt clamping groove and the clamping teeth are of an inverted T-shaped structure.
Further, the packaging ring body is formed by butt joint of two semicircular butt joint plates.
The beneficial effects of the invention are that
1. After the position of the embedded bolt is adjusted, the positioning screw rod can be rotated, the positioning screw rod passes through the sliding groove from the inner side of the blade root and is in threaded connection with the positioning screw hole, meanwhile, the outer end part of the positioning screw rod is propped against the inner side surface of the blade root, so that the embedded bolt of the blade root is positioned through the positioning screw rod, if the position of the embedded bolt is required to be adjusted, the positioning screw rod can be directly rotated, the outer end part of the positioning screw rod is separated from the inner side surface of the blade root, in order to ensure the installation convenience, the positioning screw rod is not required to be screwed out from the positioning screw hole, the embedded bolt can be slid through the clamping teeth after the positioning screw rod is unscrewed, the positioning screw rod also can slide on the annular sliding groove, and the adjustment of the embedded bolt is not limited.
2. The embedded bolt mounting structure is ingenious in design, the embedded bolts are mounted in the embedded bolt clamping grooves formed by the blade roots and the packaging ring bodies, the embedded bolts are clamped in the embedded bolt clamping grooves in a sliding mode through the clamping teeth, and the elastic connecting bodies are mounted between the clamping teeth at the bottoms of the embedded bolts, so that the embedded bolts are mounted more stably, proper numbers of the embedded bolts can be selected according to actual requirements, and reasonable mounting positions can be adjusted by sliding the embedded bolts in the mounting process, so that the embedded bolt mounting structure is more flexible to use.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
FIG. 2 is a schematic view of a cross-sectional connection between a blade root and a containment ring of the present invention.
FIG. 3 is a schematic view showing the detachment of the blade root, the packaging ring body, the embedded bolts, the locking screws and the positioning screws of the invention.
Fig. 4 is a schematic top cross-sectional view of the present invention.
Description of the embodiments
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, a pre-buried bolt structure of a sliding positioning type wind power blade root comprises a blade root 1, a packaging ring body 4, a pre-buried bolt 2, a locking screw 5, an elastic connector 7 and a positioning screw 8. The blade root 1 is in a ring structure. The packaging ring body 4 is sleeved and fixed on the outer side of the blade root 1; and an embedded bolt clamping groove 6 is arranged between the blade root 1 and the packaging ring body 4. The embedded bolts 2 are arranged in a plurality; the bottom of the embedded bolt 2 is provided with clamping teeth 3; the embedded bolts 2 are slidably clamped in the embedded bolt clamping grooves 6 through the clamping teeth 3. The elastic connector 7 is arranged in the embedded bolt clamping groove 6; the elastic connector 7 is distributed among the clamping teeth 3 at the bottom of the embedded bolt 2; the elastic connector 7 is elastically compressed and installed between the clamping teeth 3. The inner side of the blade root 1 is provided with a sliding groove 13; the sliding groove 13 is in an annular structure; the sliding groove 13 is communicated with the embedded bolt clamping groove 6; the inner side of the clamping tooth 3 is provided with a positioning screw hole 31; the position of the positioning screw hole 31 corresponds to the sliding groove 13; the inner diameter of the positioning screw hole 31 is smaller than the height of the sliding groove 13; the positioning screw rod 8 passes through the sliding groove 13 from the inner side of the blade root 1 and is in threaded connection with the positioning screw hole 31; the positioning screw rod 8 is of a T-shaped structure; the outer end of the positioning screw rod 8 is pressed against the inner side surface of the blade root 1. Further preferably, the blade root 1 has a circular ring structure; the outer side of the upper part of the blade root 1 is provided with an inner arc-shaped clamping ring groove 11; the packaging ring body 4 is in a circular ring body structure; the inner side of the upper part of the packaging ring body 4 is provided with an outer arc-shaped clamping ring groove 41; the packaging ring body 4 is sleeved on the outer side of the blade root 1; the inner arc-shaped clamping ring groove 11 and the outer arc-shaped clamping ring groove 41 are corresponding in position and form an embedded bolt clamping groove 6. The inner arc-shaped clamping ring groove 11 is communicated with the sliding groove 13. Further preferably, a plurality of locking threaded holes 12 are arranged on the outer side of the lower part of the blade root 1; the lower part of the packaging ring body 4 is provided with a plurality of locking through holes 42; the locking through hole 42 corresponds to the locking threaded hole 12 in position; the locking screw 5 passes through the locking through hole 42 from the outer side of the packaging ring body 4 and is connected in the locking threaded hole 12 in a threaded manner. Further preferably, the packaging ring body 4 and the locking screw 5 are made of titanium alloy materials. Further preferably, the embedded bolt clamping groove 6 and the clamping teeth 3 are of inverted T-shaped structures. Further preferably, the packaging ring body 4 is formed by butt joint of two semicircular butt joint plates.
After the position of the embedded bolt 2 is adjusted, the positioning screw rod 8 can be rotated, the positioning screw rod 8 passes through the sliding groove 13 from the inner side of the blade root 1 and is in threaded connection with the positioning screw hole 31, meanwhile, the outer end part of the positioning screw rod 8 is propped against the inner side surface of the blade root 1, so that the blade root 1 and the embedded bolt 2 are positioned through the positioning screw rod 8, if the position of the embedded bolt 2 needs to be adjusted, the positioning screw rod 8 can be directly rotated, the outer end part of the positioning screw rod 8 is separated from the inner side surface of the blade root 1, and in order to ensure the installation convenience, the positioning screw rod 8 does not need to be rotated out of the positioning screw hole 31, the embedded bolt 2 can be slid through the clamping tooth 3 after the positioning screw rod 8 is unscrewed, the positioning screw rod 8 also slides on the annular sliding groove 13, and the adjustment of the embedded bolt 2 cannot be limited.
The embedded bolt 2 is ingenious in design, the embedded bolts 2 are arranged in the embedded bolt clamping grooves 6 formed by the blade roots 1 and the packaging ring bodies 4, the embedded bolts 2 are slidably clamped in the embedded bolt clamping grooves 6 through the clamping teeth 3, and the elastic connecting bodies 7 are arranged between the clamping teeth 3 at the bottoms of the embedded bolts 2, so that the embedded bolts 2 are more stably arranged, proper numbers of the embedded bolts 2 can be selected according to actual requirements, reasonable installation positions can be adjusted by sliding the embedded bolts 2 in the installation process, and the embedded bolt is more flexible to use.
Claims (3)
1. The embedded bolt structure of the sliding positioning type wind power blade root is characterized by comprising a blade root, an encapsulation ring body, embedded bolts, locking screws, elastic connectors and positioning screws; the blade root is in a ring structure; the packaging ring body is sleeved and fixed on the outer side of the blade root; a pre-buried bolt clamping groove is formed between the blade root and the packaging ring body; the embedded bolts are provided with a plurality of bolts; the bottom of the embedded bolt is provided with clamping teeth; the embedded bolts are slidably clamped in the embedded bolt clamping grooves through clamping teeth; the elastic connector is arranged in the embedded bolt clamping groove; the elastic connectors are distributed among the clamping teeth at the bottom of the embedded bolt; the elastic connector is elastically compressed and installed between the clamping teeth; the inner side of the blade root is provided with a sliding groove; the sliding groove is of an annular structure; the sliding groove is communicated with the embedded bolt clamping groove; the inner side of the clamping tooth is provided with a positioning screw hole; the positioning screw hole corresponds to the sliding groove; the inner diameter of the positioning screw hole is smaller than the height of the sliding groove; the positioning screw rod passes through the sliding groove from the inner side of the blade root and is in threaded connection with the positioning screw hole; the positioning screw rod is of a T-shaped structure; the outer end part of the positioning screw rod is propped against the inner side surface of the blade root; the blade root is in a circular ring structure; the outer side of the upper part of the blade root is provided with an inner arc-shaped clamping ring groove; the packaging ring body is of a circular ring body structure; the inner side of the upper part of the packaging ring body is provided with an outer arc-shaped clamping ring groove; the inner arc clamping ring groove and the outer arc clamping ring groove are corresponding in position and form an embedded bolt clamping groove; the inner arc-shaped clamping ring groove is communicated with the sliding groove; the outer side of the lower part of the blade root is provided with a plurality of locking threaded holes; the lower part of the packaging ring body is provided with a plurality of locking through holes; the locking through hole corresponds to the locking threaded hole in position; the locking screw penetrates through the locking through hole from the outer side of the packaging ring body and is in threaded connection with the locking threaded hole; the packaging ring body and the locking screw are made of titanium alloy materials.
2. The embedded bolt structure of the sliding positioning type wind power blade root of claim 1, wherein the embedded bolt clamping groove and the clamping teeth are of an inverted T-shaped structure.
3. The embedded bolt structure of the blade root of the sliding positioning type wind power blade according to claim 1, wherein the packaging ring body is formed by butt joint of two semicircular butt joint plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810446588.1A CN108757299B (en) | 2018-05-11 | 2018-05-11 | Pre-buried bolt structure of slide positioning formula wind-powered electricity generation blade root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810446588.1A CN108757299B (en) | 2018-05-11 | 2018-05-11 | Pre-buried bolt structure of slide positioning formula wind-powered electricity generation blade root |
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| Publication Number | Publication Date |
|---|---|
| CN108757299A CN108757299A (en) | 2018-11-06 |
| CN108757299B true CN108757299B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810446588.1A Active CN108757299B (en) | 2018-05-11 | 2018-05-11 | Pre-buried bolt structure of slide positioning formula wind-powered electricity generation blade root |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110685873B (en) * | 2019-11-14 | 2024-04-12 | 江苏携之创科技有限公司 | Cabin cover of wind power generator with convenient installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1707743A1 (en) * | 2005-03-18 | 2006-10-04 | Siemens Aktiengesellschaft | Segment with minimum two blades, turbine element and method to mount a segment |
| CN101837482B (en) * | 2009-03-16 | 2013-09-25 | 常州市三维技术成套设备有限公司 | Processing technology of steam turbine seven-fork blade root pin holes and special fixture |
| CN203080547U (en) * | 2013-01-31 | 2013-07-24 | 北京燕化天钲建筑工程有限责任公司 | Locating mold of adjustable pre-buried foundation bolt |
| DE102013210579B4 (en) * | 2013-06-06 | 2018-05-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | TURNING CONNECTION AND METHOD FOR THE PRODUCTION THEREOF |
| CN204677376U (en) * | 2015-04-23 | 2015-09-30 | 许继集团有限公司 | Wind-driven generator and change oar locking device thereof |
| CN106481504A (en) * | 2015-09-01 | 2017-03-08 | 中材科技风电叶片股份有限公司 | Wind electricity blade attachment means |
| CN105643960B (en) * | 2016-03-15 | 2017-11-17 | 明阳智慧能源集团股份公司 | Built-in type subsection blade is molded and the positioning tool and application method of the solidification demoulding |
| CN205533009U (en) * | 2016-03-24 | 2016-08-31 | 北京稳力科技有限公司 | Aerogenerator's novel wheel hub coupling mechanism |
| CN106762462B (en) * | 2016-12-29 | 2018-04-24 | 北京金风科创风电设备有限公司 | Bolt sleeve connecting piece, blade manufacturing method and wind generating set |
| CN208310953U (en) * | 2018-05-11 | 2019-01-01 | 上海玻璃钢研究院东台有限公司 | A kind of pre-embedded bolt structure of flexibly positioned formula wind electricity blade blade root |
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| CN108757299A (en) | 2018-11-06 |
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