CN201836178U - Adjustable inner hexagonal blade bolt for wind power generation blade - Google Patents
Adjustable inner hexagonal blade bolt for wind power generation blade Download PDFInfo
- Publication number
- CN201836178U CN201836178U CN2011200375856U CN201120037585U CN201836178U CN 201836178 U CN201836178 U CN 201836178U CN 2011200375856 U CN2011200375856 U CN 2011200375856U CN 201120037585 U CN201120037585 U CN 201120037585U CN 201836178 U CN201836178 U CN 201836178U
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- blade
- bolt
- power generation
- wind power
- hexagonal
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Abstract
The utility model relates to an adjustable inner hexagonal blade bolt for a wind power generation blade, which comprises a blade double-headed bolt, an inner hexagon is arranged on the inner wall at one end of the double-headed blade bolt. The adjustable inner hexagonal blade bolt for the wind power generation blade has the benefits of fully stopping the interference with a variable propeller flange, better guaranteeing the length of the thread of the inner hexagon end, and being convenient for screwing and very beneficial to adjusting of the extension length of the blade bolt.
Description
Technical field
The utility model relates to a kind of wind power generation blade blade stud bolt, relates in particular to the structure of this blade stud bolt one end and pitch variable bearings.
Background technique
As seen from Figure 1: blade stud bolt 10 is the fastening pieces that are used for connecting blade and root blade pitch device, and its end links to each other with T type nut 11 in being embedded in blade, and the other end links to each other with pitch variable bearings 12.Because pitch variable bearings is connecting change oar flange, this just necessarily requires the extrusion behind the bolt connection bearing to control within the specific limits, to prevent and to become oar flange generation interference.Therefore when construction, earlier the blade bolt is screwed into T type nut certain distance, again wedged disc 13 and pitch variable bearings are set on the stud bolt, measure its extrusion, if adhere to specification, the stud bolt of then tightening nut being screwed on if length is too short or long, then also needs to adjust the length that the blade stud bolt is screwed into T type nut.So, problem has just occurred: because traditional stud bolt all is that armrest goes twisting, it requires the bolt extension that certain length is arranged, so that hand energy grasping and twisting bolt, but the blade bolt is after connecting pitch variable bearings, the length of bared end has only the distance of one to two nut width, hand can't grasping, and with the words of finger grip, basic just stubborn motionless bolt, therefore, just must break through original stud bolt design, in structure that helps twisting of a design of stud bolt.
By Fig. 2, Fig. 3 as seen: in the prior art in order to reach the purpose of twisting, end at bolt increases a little square head 14 (as Fig. 2) or hexagon head 15 (as Fig. 3), though this structure helps construction, but this outer-hexagonal or outer four directions have not only increased bolt and have become the risk that the oar flange is interfered, and adding man-hour, must be by milling or digging processing, not only cost height, and long processing time is unfavorable for large-scale production.
Summary of the invention
The utility model technical issues that need to address have provided a kind of wind power generation blade with interior hexagonal adjustable vane bolt, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: the blade stud bolt; On the inwall of described blade stud bolt one end, hexagonal in is set.
Compared with prior art, the beneficial effects of the utility model are: fully stopped and the interference that becomes the oar flange, guaranteed the length of interior hexagonal end screw thread preferably; Twisting is convenient, and is highly beneficial for the extrusion of adjusting vane bolt.
Description of drawings
Fig. 1 is wind power generation blade blade stud bolt and blade and a root blade pitch device connection diagram.
Fig. 2 and Fig. 3 are blade stud bolt structural representations in the prior art.
Fig. 4 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 4: the utility model comprises: blade stud bolt 100; Hexagonal 101 in one is set on the inwall of described blade stud bolt 100 1 ends.
In described in the hexagonal 101 across flats be no more than 20% with the area reduction rate of interior hexagonal part area and exceed.
Of the present utility model in the hexagonal design reference design of GB/T70.1-2000 " hexagon socket cap head screw ", and each machining element when issuable shearing force and batch production are produced when having taken into full account twisting, the across flats and the Nei hexagonal degree of depth of hexagonal in finally determining, the across flats is no more than 20% with the area reduction rate of interior hexagonal part area and exceeds, choose the corresponding specification among the GB/T 70.1, so just can use commercially available inner hexagon spanner to construct, and needn't customize instrument.
The utility model has the advantages that and fully stopped and the interference that becomes the oar flange, guaranteed preferably the length of interior hexagonal end screw thread, because draft is controlled at below 20%, the interior hexagonal degree of depth is also superficial, impact for pulling force is also littler, can in the situation of design length deficiency, guarantee the installation of nut. Its twisting is convenient, and is highly beneficial for the extension elongation of adjusting vane bolt.
Claims (2)
1. a wind power generation blade comprises: the blade stud bolt with interior hexagonal adjustable vane bolt; It is characterized in that: on the inwall of described blade stud bolt one end, hexagonal in is set.
2. wind power generation blade according to claim 1 is characterized in that with interior hexagonal adjustable vane bolt: in described in the hexagonal across flats be no more than 20% with the area reduction rate of interior hexagonal part area and exceed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200375856U CN201836178U (en) | 2011-02-12 | 2011-02-12 | Adjustable inner hexagonal blade bolt for wind power generation blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200375856U CN201836178U (en) | 2011-02-12 | 2011-02-12 | Adjustable inner hexagonal blade bolt for wind power generation blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836178U true CN201836178U (en) | 2011-05-18 |
Family
ID=44006283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200375856U Expired - Lifetime CN201836178U (en) | 2011-02-12 | 2011-02-12 | Adjustable inner hexagonal blade bolt for wind power generation blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836178U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671429A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Stud |
| CN104728237A (en) * | 2013-12-19 | 2015-06-24 | 通用汽车环球科技运作有限责任公司 | Flow drill screw |
| CN109681506A (en) * | 2018-12-27 | 2019-04-26 | 上海群力紧固件制造有限公司 | A kind of double end tooth stud and its preparation process |
-
2011
- 2011-02-12 CN CN2011200375856U patent/CN201836178U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671429A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Stud |
| CN104728237A (en) * | 2013-12-19 | 2015-06-24 | 通用汽车环球科技运作有限责任公司 | Flow drill screw |
| CN109681506A (en) * | 2018-12-27 | 2019-04-26 | 上海群力紧固件制造有限公司 | A kind of double end tooth stud and its preparation process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |
|
| CX01 | Expiry of patent term |