CN204553475U - High hardness wind-powered electricity generation hex head bolt - Google Patents
High hardness wind-powered electricity generation hex head bolt Download PDFInfo
- Publication number
- CN204553475U CN204553475U CN201520173876.6U CN201520173876U CN204553475U CN 204553475 U CN204553475 U CN 204553475U CN 201520173876 U CN201520173876 U CN 201520173876U CN 204553475 U CN204553475 U CN 204553475U
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- bolt
- bolt head
- head
- screw rod
- wind
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Abstract
The utility model discloses a kind of high hardness wind-powered electricity generation hex head bolt, comprise the first bolt head, the second bolt head and the screw rod that connect successively; Described first bolt head, the second bolt head and screw rod are formed in one, and the material of described first bolt head, the second bolt head and screw rod is chromium vanadium steel; The shape of the cross section of described first bolt head is square, and the shape of the cross section of the second bolt head is regular hexagon, and the side of described second bolt head is along the outside direction perpendicular to the axis of described screw rod being positioned at the side of the first bolt head; The center at the top of described first bolt head is provided with shrinkage pool.Hex head bolt in the utility model, at narrow space place, the instrument (large small wrench or inner hexagon spanner) of according to circumstances adaptive different size can carry out assembling-disassembling bolt from different perspectives.Hex head bolt is made up of chromium vanadium steel, and hardness is high, and then when screw rod specification is determined, is widely used in wind power generating set inside as a kind of Universal connecting piece that can repeatedly change.
Description
Technical field
The utility model relates to a kind of hex head bolt, particularly a kind of high hardness wind-powered electricity generation hex head bolt.
Background technique
Wind power generating set has miniaturization, modular development trend.Particularly members such as the spacing of blade, wheel hub, yaw motor of wind power generating set also diminishes along with wind power generating set miniaturization.When significantly not revising the structure of wind power generating set, the dismantling devices such as spanner may because the pitch smaller of said modules, and the setting angle of bolt is different, cannot use flexibly, and then affects the I&M of wind power generating set.And often design strength is enough to be applicable to bolt in wind power generating set, but surface hardness is poor, in the maintenance process of wind power generating set comparatively frequently, weares and teares scrap because of frequent dismounting.
Model utility content
The technical problems to be solved in the utility model is that the list of bolts surface hardness in order to overcome wind power generating set in prior art is poor, is not easy to the defect of dismounting at narrow space place, provides a kind of high hardness wind-powered electricity generation hex head bolt.
The utility model solves above-mentioned technical problem by following technical proposals:
A kind of high hardness wind-powered electricity generation hex head bolt, its feature is, described high hardness wind-powered electricity generation comprises the first bolt head, the second bolt head and the screw rod that connect successively with hex head bolt;
Described first bolt head, the second bolt head and screw rod are formed in one, and the material of described first bolt head, the second bolt head and screw rod is chromium vanadium steel;
The shape of the cross section of described first bolt head is square, and the shape of the cross section of the second bolt head is regular hexagon, and the side of described second bolt head is along the outside direction perpendicular to the axis of described screw rod being positioned at the side of the first bolt head;
The center at the top of described first bolt head is provided with the regular hexagon shrinkage pool adapted with inner hexagon spanner.
Preferably, the length of described screw rod is 5cm to 10cm.
Preferably, in the cross section of described first bolt head, the length on each limit is 3cm to 6cm.
Preferably, in the cross section of described second bolt head, the length on each limit is 5cm to 8cm.
Positive progressive effect of the present utility model is: the high hardness wind-powered electricity generation hex head bolt that the utility model proposes, at narrow space place, can according to circumstances, the instrument (large small wrench or inner hexagon spanner) of adaptive different size carries out assembling-disassembling bolt from different perspectives.High hardness wind-powered electricity generation hex head bolt is made up of chromium vanadium steel, and hardness is high, and then when screw rod specification is determined, is widely used in wind power generating set inside as a kind of Universal connecting piece that can repeatedly change.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high hardness wind-powered electricity generation hex head bolt of preferred embodiment of the present utility model.
Description of reference numerals
1: the first bolt head
The side of 11: the first bolt heads
2: the second bolt heads
The side of 21: the second bolt heads
3: screw rod
4: shrinkage pool
Embodiment
Lift preferred embodiment below, and come by reference to the accompanying drawings clearlyer intactly the utility model to be described.
As shown in Figure 1, a kind of high hardness wind-powered electricity generation hex head bolt, comprises the first bolt head 1, second bolt head 2 and the screw rod 3 connected successively.
Wherein, the first bolt head 1, second bolt head 2 and screw rod 3 are formed in one, and the material of described first bolt head 1, second bolt head 2 and screw rod 3 is chromium vanadium steel.In the present embodiment, above-mentioned chromium vanadium steel is through carbonitriding process, and therefore hex head bolt surface hardness strengthens greatly, not easy to wear, can be used for the connection of the wind-driven generator assembly needing often dismounting.
The shape of the cross section of the first bolt head 1 is square, and in the cross section of the first bolt head 1, the length (i.e. the foursquare length of side) on each limit is 5cm.The shape of the cross section of the second bolt head 2 is regular hexagon, and in the cross section of the second bolt head 2, the length (i.e. the orthohexagonal length of side) on each limit is 6cm.
The side 21 of described second bolt head is along the outside of side 11 direction of the axis perpendicular to described screw rod being positioned at the first bolt head.And the center at the top of the first bolt head 1 is provided with the regular hexagon shrinkage pool adapted with inner hexagon spanner.First bolt head 1 is applicable to by the clamping of less adjustable spanner and pulls.Second bolt head 2 is applicable to by the clamping of larger pipe wrench and pulls.Shrinkage pool 4 on first bolt head 1 is applicable to being embedded by the inner hexagon spanner of rectangular shape and moving.Therefore, the high hardness wind-powered electricity generation hex head bolt in the present embodiment can adapt with the spanner of three types.Staff, can according to the size of power needed for the mounting point of bolt or wrenching bolt at narrow space place, selects a kind of spanner of most constructability operation carry out the clamping of bolt and pull.
In the present embodiment, the length of screw rod is 8cm.In other embodiments of the present utility model, the length of described screw rod can in 5cm to 10cm an optional value.
In other embodiments of the present utility model, in the cross section of described first bolt head each limit length can in 3cm to 6cm optional one value.
In other embodiments of the present utility model, in the cross section of described second bolt head each limit length can in 5cm to 8cm optional one value.
The high hardness wind-powered electricity generation hex head bolt that the utility model proposes, at narrow space place, can according to circumstances, the instrument (large small wrench or inner hexagon spanner) of adaptive different size carries out assembling-disassembling bolt from different perspectives.High hardness wind-powered electricity generation hex head bolt is made up of chromium vanadium steel, and hardness is high, and then when screw rod specification is determined, is widely used in wind power generating set inside as a kind of Universal connecting piece that can repeatedly change.
Although the foregoing describe embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these mode of executions, but these change and amendment all falls into protection domain of the present utility model.
Claims (4)
1. a high hardness wind-powered electricity generation hex head bolt, is characterized in that, described high hardness wind-powered electricity generation comprises the first bolt head, the second bolt head and the screw rod that connect successively with hex head bolt;
Described first bolt head, the second bolt head and screw rod are formed in one, and the material of described first bolt head, the second bolt head and screw rod is chromium vanadium steel;
The shape of the cross section of described first bolt head is square, and the shape of the cross section of the second bolt head is regular hexagon, and the side of described second bolt head is along the outside direction perpendicular to the axis of described screw rod being positioned at the side of the first bolt head;
The center at the top of described first bolt head is provided with the regular hexagon shrinkage pool adapted with inner hexagon spanner.
2. high hardness wind-powered electricity generation hex head bolt as claimed in claim 1, it is characterized in that, the length of described screw rod is 5cm to 10cm.
3. high hardness wind-powered electricity generation hex head bolt as claimed in claim 1, it is characterized in that, in the cross section of described first bolt head, the length on each limit is 3cm to 6cm.
4. as the high hardness wind-powered electricity generation hex head bolt in claim 1-3 as described in any one, it is characterized in that, in the cross section of described second bolt head, the length on each limit is 5cm to 8cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173876.6U CN204553475U (en) | 2015-03-26 | 2015-03-26 | High hardness wind-powered electricity generation hex head bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173876.6U CN204553475U (en) | 2015-03-26 | 2015-03-26 | High hardness wind-powered electricity generation hex head bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553475U true CN204553475U (en) | 2015-08-12 |
Family
ID=53828590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520173876.6U Expired - Fee Related CN204553475U (en) | 2015-03-26 | 2015-03-26 | High hardness wind-powered electricity generation hex head bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204553475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526103A (en) * | 2018-05-25 | 2019-12-03 | 中车株洲电力机车研究所有限公司 | A method of for improving tower frame for wind generating set lifting efficiency |
-
2015
- 2015-03-26 CN CN201520173876.6U patent/CN204553475U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526103A (en) * | 2018-05-25 | 2019-12-03 | 中车株洲电力机车研究所有限公司 | A method of for improving tower frame for wind generating set lifting efficiency |
| CN110526103B (en) * | 2018-05-25 | 2020-07-03 | 中车株洲电力机车研究所有限公司 | Method for improving hoisting efficiency of wind turbine generator tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20210326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |