CN202468649U - Inner expansion type anti-loosening bolt - Google Patents
Inner expansion type anti-loosening bolt Download PDFInfo
- Publication number
- CN202468649U CN202468649U CN2012200758595U CN201220075859U CN202468649U CN 202468649 U CN202468649 U CN 202468649U CN 2012200758595 U CN2012200758595 U CN 2012200758595U CN 201220075859 U CN201220075859 U CN 201220075859U CN 202468649 U CN202468649 U CN 202468649U
- Authority
- CN
- China
- Prior art keywords
- expansion
- bolt
- hole
- plug
- nut
- Prior art date
- 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.)
- Expired - Fee Related
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 6
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses an inner expansion type anti-loosening bolt comprising a screw rod and a nut. One end of the screw rod is provided with an expansion hole with a linear expansion seam and an expansion plug is blocked in the expansion hole. According to the inner expansion type anti-loosening bolt, the expansion hole with the linear expansion seam is machined at the center of the end part of a bolt rod; another expansion plug which is slightly larger than the expansion hole is machined; when the inner expansion type anti-loosening bolt is mounted, the nut is used for fixing a work piece and the expansion plug is wedged into the expansion hole, so that the end part of the bolt rod is expanded by the expansion plug, the diameter of the bolt rod is increased, and the nut cannot be outwards loosened; and the expansion plug cannot be easily taken out, so that the bolt is not easily detached and has an anti-theft function.
Description
Technical field
The utility model relates to the anti-loose bolt of a kind of internal-expansion type.
Background technique
Though the bolt performance is good, and is simple in structure, reliability is high; Be widely used, but exist easily loosening this problem, we can say that also this is characteristics of screw thread; Because link exists gap and frequent vibrations, all is the reason that causes bolt looseness, even comes off.In the connection of power grid iron tower, what adopt basically is that bolt connects at present, but because iron tower receives the influence of factor of natural environment for a long time; Cause iron tower to produce frequent vibrations, the bolt that accumulates over a long period will produce loosening, if under boisterous effects such as strong wind; More can aggravate bolt gets loose; Cause the part angle steel to come off, iron tower structural instability and serious accidents such as tower take place down directly endangers power grid security.Because the part artificial origin, the iron tower bolt is dismantled by malice in addition, causes the iron tower structural instability to fall tower and also happens occasionally.
The model utility content
The purpose of the utility model provides a kind of reliable performance, be easy to process, the anti-loose bolt of internal-expansion type easy for installation.
The utility model adopts following technological scheme:
The anti-loose bolt of a kind of internal-expansion type is characterized in that it comprises screw rod and nut, and an end of described screw rod is provided with the bloated hole that has a word expansion joint (E.J.), is plugged with the plug that expands in the hole of expanding.
The good effect of the utility model is following:
The utility model is bloated hole that has a word expansion joint (E.J.) of processing at center, bolt shank end, reprocesses a bloated plug that is a bit larger tham the hole of expanding, when mounted; After nut fixed workpiece, the plug wedging of will the expanding hole of expanding strutted the bolt shank end plug that expanded; It is big that the bolt shank diameter becomes, and nut can't outwards become flexible, and owing to the plug that expands can't take out easily; Bolt also can not be disassembled easily, has anti-theft feature concurrently.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model screw rod.
Accompanying drawing 2 is the bloated hole structure schematic representation of the utility model.
Accompanying drawing 3 is the bloated plug structure schematic representation of the utility model.
Accompanying drawing 4 is the utility model user mode figure
In the accompanying drawings: 1 screw rod, 2 nuts, 3 bloated plugs, 4 one word expansion joint (E.J.)s, 5 bloated holes.
Embodiment
Like accompanying drawing 1,2,3, shown in 4, the anti-loose bolt of a kind of internal-expansion type is characterized in that it comprises screw rod 1 and nut 2.One end of described screw rod 1 is provided with the bloated hole 5 that has a word expansion joint (E.J.) 4, is plugged with the plug 3 that expands in the hole 5 of expanding.Position corresponding the be in-line shape crack of a described word expansion joint (E.J.) 4 for offering along the inwall in the hole 5 of expanding.The plug 3 that expands is taper, and point diameter is slightly smaller than hole 5 diameters that expand, and the rear end diameter is a bit larger tham hole 5 diameters that expand, and length is a bit larger tham or is equaled hole 5 degree of depth that expand.Material is selected for use than the high grade of bolt material as far as possible.Fill in the bloated hole 5 of 3 wedgings when expanding after, a word expansion joint (E.J.) 4 of screw rod 1 end is expanded fills in 3 distendings, and diameter can not become flexible bolt greater than nut 2 internal diameters.Expand and to take out after plug 3 is wedged, bolt can not be dismantled, have anti-theft feature.Shown in accompanying drawing 4, screw rod 1 passes link, uses earlier nut 2 link of screwing, and the bloated hole 5 of the plug 3 wedging screw rods 1 that will expand then makes screw rod 1 end along a word expansion joint (E.J.) 4 distendings, and nut 2 can not be become flexible.The utility model bolt cuts into two expansion joint (E.J.)s along axis, its objective is making the plug 3 that expands by wedging after, the end can be prevented that nut 2 is loosening by distending.
Claims (1)
1. the anti-loose bolt of internal-expansion type is characterized in that it comprises screw rod (1) and nut (2), and an end of described screw rod (1) is provided with the bloated hole (5) that has a word expansion joint (E.J.) (4), is plugged with the plug (3) that expands in the hole (5) of expanding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200758595U CN202468649U (en) | 2012-03-02 | 2012-03-02 | Inner expansion type anti-loosening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200758595U CN202468649U (en) | 2012-03-02 | 2012-03-02 | Inner expansion type anti-loosening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468649U true CN202468649U (en) | 2012-10-03 |
Family
ID=46916808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200758595U Expired - Fee Related CN202468649U (en) | 2012-03-02 | 2012-03-02 | Inner expansion type anti-loosening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994139A (en) * | 2014-06-06 | 2014-08-20 | 国家电网公司 | Cushioned nut with torsion bulge |
| CN111779751A (en) * | 2020-07-07 | 2020-10-16 | 河北北汽福田汽车部件有限公司 | Locking bolt structure that moves |
-
2012
- 2012-03-02 CN CN2012200758595U patent/CN202468649U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994139A (en) * | 2014-06-06 | 2014-08-20 | 国家电网公司 | Cushioned nut with torsion bulge |
| CN111779751A (en) * | 2020-07-07 | 2020-10-16 | 河北北汽福田汽车部件有限公司 | Locking bolt structure that moves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20130320 Owner name: STATE ELECTRIC NET CROP. HEBEI ELECTRIC POWER CONS Effective date: 20130320 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130320 Address after: 050021 Shijiazhuang Province, Yuhua Province Sports street, South Street, No. 238, No. Patentee after: Electric Power Research Institute of Hebei Electric Power Corporation Patentee after: State Grid Corporation of China Patentee after: Hebei Electric Power Construction & Adjustment Research Institute Address before: 050021 No. 238 South Sports street, Hebei, Shijiazhuang Patentee before: Hebei Electric Power Research Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20160302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |