CN2337339Y - Multiple stage expansion bolt - Google Patents
Multiple stage expansion bolt Download PDFInfo
- Publication number
- CN2337339Y CN2337339Y CN 98232693 CN98232693U CN2337339Y CN 2337339 Y CN2337339 Y CN 2337339Y CN 98232693 CN98232693 CN 98232693 CN 98232693 U CN98232693 U CN 98232693U CN 2337339 Y CN2337339 Y CN 2337339Y
- Authority
- CN
- China
- Prior art keywords
- screw rod
- expansion
- expansion bolt
- expansion pipe
- cone angle
- 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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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model relates to a multiple-stage expansion bolt which has the technical proposal that an existing expansion pipe is changed into a multiple-stage expansion pipe. A conical sleeve is arranged between two stages of the expansion pipe. The cone angle of the conical sleeve is identical to the cone angle of a screw rod with an inverted conic head. The external diameter of the conical sleeve is identical to the external diameter of the conic head of the screw rod. The nominal size of the internal diameter of the conical sleeve is identical to the nominal diameter of the screw rod. The multiple-stage expansion bolt of the utility model, particularly the expansion bolt with large size which is used for deep holes, has the advantages of safety, high stability and strong fastening force.
Description
The utility model relates to a kind of multistage expansion bolt.
Traditional expansion bolt has only one-level to expand, and EXPANSION ANCHOR BOLTS only has a fulcrum in the hole, and steadiness is relatively poor, and bolt is loosening easily, pulls out from the hole easily.
The purpose of this utility model is at above-mentioned deficiency, proposes a kind of bolt and have a plurality of fulcrums in the hole, the multistage expansion bolt of good stability.
The purpose of this utility model is achieved like this: an expansion tube that will have EXPANSION ANCHOR BOLTS now is designed to the multistage expansion pipe, comprise the double expansion pipe, between two expansion tubes, be provided with a taper sheath, the cone angle of taper sheath is identical with the cone angle of back taper head screw rod, the external diameter of taper sheath is identical with the external diameter of screw rod conehead, and the nominal size of its internal diameter is identical with the nominal diameter of screw rod.
Come the utility model done below in conjunction with drawings and Examples and describe in further detail:
Accompanying drawing 1 is the utility model structural drawing.
With reference to accompanying drawing, the utility model multistage expansion bolt, comprise inverted cone screw rod (6), nut (5), pad (4) and expansion tube, expansion tube is designed to the multistage expansion pipe, comprises the double expansion pipe, design has a taper sheath (2) between double expansion pipe (1) and expansion tube (3), and the cone angle of taper sheath (2) is identical with the cone angle of back taper head screw rod (6); External diameter is identical with the external diameter of screw rod conehead, the nominal size of its internal diameter is identical with the nominal diameter of screw rod, during use, this multistage expansion bolt is placed corresponding hole, screw nut (5), then double expansion pipe (1,3) will be under the effect of conehead and tapered sleeve, and outwards expanding simultaneously tightly suppresses hole wall, thereby it is fastening that EXPANSION ANCHOR BOLTS is obtained.
The multistage expansion bolt that the utility model provides, safe and reliable, there are a plurality of fulcrums in it and hole, and area of contact is big, good stability, fastening force is strong, more especially is used for the big specification EXPANSION ANCHOR BOLTS of deep hole, best results.
Claims (1)
1, a kind of multistage expansion bolt, it comprises inverted cone screw rod (6), nut (5), pad (4) and expansion tube constitute, and its technical characteristics is that expansion tube is designed to the multistage expansion pipe, comprises the double expansion pipe, between double expansion pipe (1,3), be provided with a taper sheath (2), the cone angle of taper sheath (2) is identical with the cone angle of back taper head screw rod (6), and external diameter is identical with the external diameter of screw rod conehead, and the nominal size of its internal diameter is identical with the nominal diameter of screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232693 CN2337339Y (en) | 1998-05-08 | 1998-05-08 | Multiple stage expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232693 CN2337339Y (en) | 1998-05-08 | 1998-05-08 | Multiple stage expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2337339Y true CN2337339Y (en) | 1999-09-08 |
Family
ID=33981574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98232693 Expired - Fee Related CN2337339Y (en) | 1998-05-08 | 1998-05-08 | Multiple stage expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2337339Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111244A (en) * | 2022-07-22 | 2022-09-27 | 河北省送变电有限公司 | Expansion bolt |
-
1998
- 1998-05-08 CN CN 98232693 patent/CN2337339Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111244A (en) * | 2022-07-22 | 2022-09-27 | 河北省送变电有限公司 | 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 |