CN201339477Y - High-strength right-screwing threaded steel bolt - Google Patents
High-strength right-screwing threaded steel bolt Download PDFInfo
- Publication number
- CN201339477Y CN201339477Y CNU2008202281368U CN200820228136U CN201339477Y CN 201339477 Y CN201339477 Y CN 201339477Y CN U2008202281368 U CNU2008202281368 U CN U2008202281368U CN 200820228136 U CN200820228136 U CN 200820228136U CN 201339477 Y CN201339477 Y CN 201339477Y
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- CN
- China
- Prior art keywords
- thread
- threaded steel
- bolt
- screwing threaded
- strength
- 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 relates to a protective device for coal mining, in particular to a high-strength right-screwing threaded steel bolt, which resolves the problem that the fixed thread length of the bolt used in coal mines in the prior art needs to be processed on site and is limited. The high-strength right-screwing threaded steel bolt is formed by full thread reinforcing bars and cast steel nuts. The high-strength right-screwing threaded steel bolt utilizes the full thread reinforcing bars to replace conventional bolts, which has the advantages that two ends of the reinforcing bars do not need to be processed with threads, is fewer in manufacturing procedures compared with a common screw bolt by directly utilizing thread ribs of thread steels, is high in fastening strength without thread length limitation, and is simple in timbering, safe, reliable and wide in development prospect.
Description
Technical field
The utility model relates to the digging protection of a kind of colliery and uses device, is specially a kind of high strength right-handed thread steel anchor rod.
Background technology
In the mine laneway in colliery, often to use the device of anchor pole and pallet and steel band combination to guarantee that the safety of wall is with stable.The aggregate erection process generally is that the certain distance in interval is squeezed into some anchor poles continuously in wall, then at the terminal fixedly supporting plate of anchor pole, the steel band of fixedly connected long distance between supporting plate touch the protection effect that roof plays similar guard by some steel bands again.Traditional anchor pole end generally is processed with screw thread, overlaps connected nut then supporting plate is fixed.The process of this anchor pole is at first wanted machining screw, and the length of screw thread also not necessarily with the scene need be connected.
Summary of the invention
The utility model exists the fixing spiral thread on anchor bolt length of using in colliery to need the problem of field machining and length limited system and a kind of high strength right-handed thread steel anchor rod is provided in order to solve in the prior art.
The utility model is realized that by following technical scheme a kind of high strength right-handed thread steel anchor rod is to be made of full thread reinforcing bar and cast steel nut.
Anchor pole of the present utility model directly uses the full thread reinforcing bar to replace traditional anchor pole, be characterized in noting be used in the reinforcing bar two ends and process screw thread, directly use the screw thread cross rib of screw-thread steel itself, lack than the common screw production process, fastening strength is big, and is not subjected to the restriction of screw thread length, and supporting is simple, safe and reliable, development prospect is wide.
Description of drawings
Fig. 1 is a structural representation of the present utility model
The specific embodiment
As schematically shown in Figure 1, a kind of high strength right-handed thread steel anchor rod is to be made of full thread reinforcing bar 1 and cast steel nut 2.The hand of spiral dextrorotation of full thread reinforcing bar 1.
Claims (2)
1, a kind of high strength right-handed thread steel anchor rod is characterized in that being made of full thread reinforcing bar (1) and cast steel nut (2).
2, high strength right-handed thread steel anchor rod according to claim 1 is characterized in that the hand of spiral dextrorotation of full thread reinforcing bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202281368U CN201339477Y (en) | 2008-12-10 | 2008-12-10 | High-strength right-screwing threaded steel bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202281368U CN201339477Y (en) | 2008-12-10 | 2008-12-10 | High-strength right-screwing threaded steel bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201339477Y true CN201339477Y (en) | 2009-11-04 |
Family
ID=41235022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202281368U Expired - Fee Related CN201339477Y (en) | 2008-12-10 | 2008-12-10 | High-strength right-screwing threaded steel bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201339477Y (en) |
-
2008
- 2008-12-10 CN CNU2008202281368U patent/CN201339477Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20101210 |