CN202851575U - Cross-shaped large flat head screw for nuclear power - Google Patents
Cross-shaped large flat head screw for nuclear power Download PDFInfo
- Publication number
- CN202851575U CN202851575U CN201220490090.3U CN201220490090U CN202851575U CN 202851575 U CN202851575 U CN 202851575U CN 201220490090 U CN201220490090 U CN 201220490090U CN 202851575 U CN202851575 U CN 202851575U
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- China
- Prior art keywords
- cross
- screw
- flat head
- nuclear power
- large flat
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- Expired - Lifetime
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model relates to a part used for nuclear power, in particular to a cross-shaped large flat head screw for the nuclear power. The cross-shaped large flat head screw mainly solves the problems that after being used for a period of time, an existing screw loosens on a sluice gate, leakage occurs, and safety accidents are caused, and the like. The cross-shaped large flat head screw comprises a large flat head (1) and is characterized in that the outer surface of the large flat head (1) is a ball face provided with a cross-shaped groove (2), the inner end of the large flat head is provided with a knurl section (3), and the other end of the knurl section is provided with a thread rod (4).
Description
Technical field
The utility model relates to the component that a kind of nuclear power is used, and especially relates to a kind of nuclear power with the large brazier head screw of cross.
Background technique
Existing more product all needs to use screw in process of production, particularly in the field of nuclear power gate, screw need to be filled out that some fixes size and structure in the sluice gate, if fixed effect is bad, then can cause more sluice gate to be revealed, waste great lot of water resources, even caused security incident.Chinese patent discloses a kind of Polycylinder combination head tapping screw (notice of authorization number: CN201810640U), there is a self tapping flute its termination at screw thread, the head that it is characterized in that screw is combined by the identical part cylinder along garden Zhou Junbu of a plurality of radiuses, at this head part cylindrical section quantity identical a plurality of the screw grooves identical with a plurality of radiuses are arranged, this head a plurality of screw groove and are formed by plane and plane combination with the center line oblique of this screw that a center line with screw coincides respectively, the angle on this two plane less than 90 degree greater than 60 degree, with the center line oblique plane of this screw oblique be that center from the polycylindser combination head tilts to export-oriented thread section direction.Chinese patent also discloses a kind of automatic locking screw (notice of authorization number: CN201810632U), it is followed successively by from top to bottom and is provided with externally threaded screw head, screw rod and nut, it is characterized in that: screw rod is the hollow screw bar, and hollow screw bar both sides are respectively equipped with slotted hole, the width of slotted hole is less than the internal diameter of hollow screw bar, in the inner chamber of hollow screw bar spring is set, the spring upper end is provided with plug, the both wings of plug stretch out outside the hollow screw bar by slotted hole, spring is not less than the length of hollow screw bar under free extended configuration, the distance of the both wings of plug is greater than the diameter of nut.But these two kinds of screws are after using one section, and screw can be loosening at sluice gate, leaks thereby produce, and then can cause security incident.
The model utility content
The utility model provides a kind of nuclear power with the large brazier head screw of cross, and it mainly is to solve the existing screw of prior art after using one section, and screw can be loosening at sluice gate, leaks thereby produce, and then can cause the technical problem of security incident etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of nuclear power of the present utility model comprises large homalocephalus with the large brazier head screw of cross, and the outer surface of described large homalocephalus is sphere, has cross recess on the sphere, and the inner of large homalocephalus is provided with knurled segment, and the other end of knurled segment is provided with threaded stem.Large homalocephalus, knurled segment, threaded stem integral body are made, and whole screw is made by stainless steel.The length of large homalocephalus can be 3-7mm, and its diameter is 19-22mm.The overall length of knurled segment, threaded stem can be 17-22mm.
As preferably, be provided with positioning groove between described knurled segment and the threaded stem.Positioning groove is convenient to screw plays the location when packing nuclear power generating equipment into effect, prevents the bolt displacement.
As preferably, be provided with the arc transition section between described large homalocephalus and the knurled segment.The arc transition section can add the intensity between powerful homalocephalus and the arc transition section.
Therefore, screw of the present utility model can play the effect of location after use, and the working life of screw is longer, thereby can avoid causing security incident, and is simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is side structure schematic representation of Fig. 1.
Component, position and numbering among the figure: large homalocephalus 1, cross recess 2, knurled segment 3, threaded stem 4, positioning groove 5, arc transition section 6.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of nuclear power of this example such as Fig. 1, Fig. 2, comprises large homalocephalus 1 with the large brazier head screw of cross, and the outer surface of large homalocephalus is sphere, has cross recess 2 on the sphere, and the inner of large homalocephalus is provided with knurled segment 3, and the other end of knurled segment is provided with threaded stem 4.Be provided with positioning groove 5 between knurled segment and the threaded stem.Be provided with arc transition section 6 between large homalocephalus and the knurled segment.
During use, whole screw is screwed on the sluice gate that nuclear power uses gets final product.
The above only is specific embodiment of the utility model, but structure characteristic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the claim of the present utility model.
Claims (3)
1. a nuclear power is with the large brazier head screw of cross, comprise large homalocephalus (1), it is characterized in that the outer surface of described large homalocephalus (1) is sphere, have cross recess (2) on the sphere, the inner of large homalocephalus is provided with knurled segment (3), and the other end of knurled segment is provided with threaded stem (4).
2. a kind of nuclear power according to claim 1 is characterized in that being provided with positioning groove (5) between described knurled segment (3) and the threaded stem (4) with the large brazier head screw of cross.
3. a kind of nuclear power according to claim 1 and 2 is characterized in that being provided with arc transition section (6) between described large homalocephalus (1) and the knurled segment (3) with the large brazier head screw of cross.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220490090.3U CN202851575U (en) | 2012-09-25 | 2012-09-25 | Cross-shaped large flat head screw for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220490090.3U CN202851575U (en) | 2012-09-25 | 2012-09-25 | Cross-shaped large flat head screw for nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851575U true CN202851575U (en) | 2013-04-03 |
Family
ID=47982781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220490090.3U Expired - Lifetime CN202851575U (en) | 2012-09-25 | 2012-09-25 | Cross-shaped large flat head screw for nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2515789A (en) * | 2013-07-04 | 2015-01-07 | Andrew Ellison | Threaded stud with thread captivating knurl |
| CN108608851A (en) * | 2018-06-06 | 2018-10-02 | 博众精工科技股份有限公司 | Automobile batteries retaining mechanism |
-
2012
- 2012-09-25 CN CN201220490090.3U patent/CN202851575U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2515789A (en) * | 2013-07-04 | 2015-01-07 | Andrew Ellison | Threaded stud with thread captivating knurl |
| CN108608851A (en) * | 2018-06-06 | 2018-10-02 | 博众精工科技股份有限公司 | Automobile batteries retaining mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: AOZHAN INDUSTRIAL CO., LTD. Free format text: FORMER NAME: ZHEJIANG AOZHAN INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311221, No. 519 Middle Road, Dang Wan Town, Xiaoshan District, Zhejiang, Hangzhou Patentee after: AOZHAN INDUSTRIAL CO.,LTD. Address before: 311221, No. 519 Middle Road, Dang Wan Town, Xiaoshan District, Zhejiang, Hangzhou Patentee before: Zhejiang Aozhan Industry Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
|
| CX01 | Expiry of patent term |