CN2363110Y - Large-area expansion bolt - Google Patents
Large-area expansion bolt Download PDFInfo
- Publication number
- CN2363110Y CN2363110Y CN 99231389 CN99231389U CN2363110Y CN 2363110 Y CN2363110 Y CN 2363110Y CN 99231389 CN99231389 CN 99231389 CN 99231389 U CN99231389 U CN 99231389U CN 2363110 Y CN2363110 Y CN 2363110Y
- Authority
- CN
- China
- Prior art keywords
- expansion sleeve
- bolt
- expansion
- hole
- 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
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Abstract
The utility model discloses a large tracts of land expansion bolts, it comprises expansion sleeve, bolt, nut, packing ring, and expansion sleeve and packing ring cover are on the bolt, at the threaded part of bolt on the nut, and the hole of expansion sleeve is conical surface hole, and there is the open slot along the direction of axis on the expansion sleeve, and the unthreaded pole portion of bolt is the taper cone beam, and its tapering is the same with the conical surface hole tapering of expansion sleeve. The utility model has the advantages of the area of contact of expansion sleeve and wall hole is big, frictional resistance is big to make expansion bolts fix in the wall hole reliably, and can not damage the wall hole, also be difficult to extract.
Description
The utility model relates to the EXPANSION ANCHOR BOLTS that a kind of fixed object is on the wall used.
At present, EXPANSION ANCHOR BOLTS of the prior art generally all is to make the termination that tapering is very big at the afterbody of its bolt, this termination is directly swollen the port of expansion sleeve, thereby EXPANSION ANCHOR BOLTS is fixed in the porthole.Because expansion sleeve is that port is inflated, so it is that line contacts with contacting of porthole, thus its surface friction drag the end of than, EXPANSION ANCHOR BOLTS can not be fixed in the porthole reliably, and is easy to damage porthole, and is easy to be pulled out.
The purpose of this utility model is: provide a kind of area of contact of expansion sleeve and porthole that makes big, thereby surface friction drag is big, makes EXPANSION ANCHOR BOLTS can be fixed on large size EXPANSION ANCHOR BOLTS in the porthole reliably.
The utility model is to constitute like this: it is made up of expansion sleeve (1), bolt (2), nut (3), packing ring (4), expansion sleeve (1) and packing ring (4) are enclosed within on the bolt (2), nut (3) is gone up the helical thread portion in bolt (2), the endoporus of expansion sleeve (1) is conical surface hole, direction at expansion sleeve (1) upper edge axis has opening slot (5), the threadless bar portion of bolt (2) is a conical rod, and its tapering is identical with the conical surface hole tapering of expansion sleeve (1).
Owing to adopted technique scheme, the utility model compared with prior art, the advantage that the area of contact with expansion sleeve and porthole is big, surface friction drag is big, thus EXPANSION ANCHOR BOLTS can be fixed in the porthole reliably, and can not damage porthole, be not easy to be pulled out yet.During use, earlier in the identical hole of external diameter of wanting one on brill on the wall of fixed object with expansion sleeve (1), then the utility model is put in the hole, screwing nut (3) can move bolt (2) outside the hole, thereby the conical surface hole that makes its awl bar promote expansion sleeve (1) equably swells the outer surface large size of the conical surface bore portion of expansion sleeve (1) equably, and contacts with porthole generation cylndrical surface large size, thereby reach increase surface friction drag, firmly fix the purpose of EXPANSION ANCHOR BOLTS.
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the structural representation of the utility model expansion sleeve (1).
Embodiment of the present utility model: expansion sleeve (1), bolt (2), nut (3), packing ring (4) all adopt material same as the prior art to make, during making, the endoporus of expansion sleeve (1) is made into conical surface hole, and drive four opening slots (5) along the direction symmetry of its axis thereon, the threadless bar portion of bolt (2) is made into conical rod, make the tapering of its conical rod identical with the conical surface hole tapering of expansion sleeve (1), then expansion sleeve (1) and packing ring (4) are enclosed within on the bolt (2), go up nut (3) at the helical thread portion of bolt (2).
Claims (1)
1, a kind of large size EXPANSION ANCHOR BOLTS, it is made up of expansion sleeve (1), bolt (2), nut (3), packing ring (4), expansion sleeve (1) and packing ring (4) are enclosed within on the bolt (2), nut (3) is gone up the helical thread portion in bolt (2), it is characterized in that: the endoporus of expansion sleeve (1) is conical surface hole, direction at expansion sleeve (1) upper edge axis has opening slot (5), and the threadless bar portion of bolt (2) is a conical rod, and its tapering is identical with the conical surface hole tapering of expansion sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99231389 CN2363110Y (en) | 1999-04-13 | 1999-04-13 | Large-area expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99231389 CN2363110Y (en) | 1999-04-13 | 1999-04-13 | Large-area expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2363110Y true CN2363110Y (en) | 2000-02-09 |
Family
ID=34020261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99231389 Expired - Fee Related CN2363110Y (en) | 1999-04-13 | 1999-04-13 | Large-area expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2363110Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383410C (en) * | 2004-09-22 | 2008-04-23 | 天津科技大学 | Tapered High Fatigue Strength Bolts |
| CN102278343A (en) * | 2011-07-14 | 2011-12-14 | 覃国君 | Direct-entering expansion bolt |
| CN103016899A (en) * | 2012-12-14 | 2013-04-03 | 广州中船黄埔造船有限公司 | Pipe sealing device |
| CN115126757A (en) * | 2022-07-14 | 2022-09-30 | 贵州贤隆紧固件有限责任公司 | Detachable expansion bolt |
-
1999
- 1999-04-13 CN CN 99231389 patent/CN2363110Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383410C (en) * | 2004-09-22 | 2008-04-23 | 天津科技大学 | Tapered High Fatigue Strength Bolts |
| CN102278343A (en) * | 2011-07-14 | 2011-12-14 | 覃国君 | Direct-entering expansion bolt |
| CN103016899A (en) * | 2012-12-14 | 2013-04-03 | 广州中船黄埔造船有限公司 | Pipe sealing device |
| CN103016899B (en) * | 2012-12-14 | 2015-04-22 | 广州中船黄埔造船有限公司 | Pipe sealing device |
| CN115126757A (en) * | 2022-07-14 | 2022-09-30 | 贵州贤隆紧固件有限责任公司 | Detachable expansion bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |