CN2480547Y - Anchoring-bolt with screw end - Google Patents
Anchoring-bolt with screw end Download PDFInfo
- Publication number
- CN2480547Y CN2480547Y CN 01220452 CN01220452U CN2480547Y CN 2480547 Y CN2480547 Y CN 2480547Y CN 01220452 CN01220452 CN 01220452 CN 01220452 U CN01220452 U CN 01220452U CN 2480547 Y CN2480547 Y CN 2480547Y
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- CN
- China
- Prior art keywords
- head
- anchor
- screw
- rod
- anchor head
- 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
A screw head anchor bar employs the round steel bar or tube-shaped metal to be the body, wherein the front end of the body can be integrated or separately provided with the cylindrical or the tube-shaped metal anchor head, and the outer surface of the anchor head is provided with the anchor screw thread. Further, the back end is provided with two symmetric grooves and the back end of the body is provided with the screw thread which is allocated with a back-up and a screw cap in order to fasten by screwing on the screw cap from the back end after the anchor bar is screwed up into the rock hole. The utility model has advantages of easy manufacture, reliable quality, steel saving, huge bolt-locking force, wide application scope, convenient installment, warranted installing quality and recyclable to use.
Description
The utility model head of screw anchor pole relates to a kind of termination formula anchor device that is used for underground engineering support.
Use the support technology of bolt anchorage rock mass in geotechnical engineering and underground construction, to be widely used for a long time.Existing tens kinds current, as to adapt to different geological conditionss, have difference in functionality and purposes of anchor pole.Length by anchor rod anchored part can be divided into it end anchorage and full length fastening formula anchor pole.Existing end anchorage formula anchor pole can be divided into mechanical anchor formula anchor pole (shell that expands, fall wedge, peg block rock bolt etc.) and bond-anchorage formula anchor pole (resin cartridge bag, fast setting cement cartridge bag formula etc.) again by the anchorage style of itself and rock mass.
Engineering practice for many years proves that existing end anchorage anchor pole also exists some weak point, though easier as the installation of mechanical anchor formula anchor pole, its structure is more complicated often, and installation quality is difficult for guaranteeing; Bond-anchorage formula anchor pole need be purchased the anchoring agent separately, the high and unsuitable long preservation of cementing agent cost etc.Also have a common shortcoming in addition, promptly can not reclaim multiplexing.
The former Soviet Union begins to develop full length fastening formula threaded anchor rod in nineteen sixties, and the body of rod is by rolling the forming of reinforcing bar of diameter 25～27mm, length 0.9～1.6m, and an end has special square toes to be used for being connected with fitting machine and holding backing plate.This anchor pole can be repeatedly used, and its shortcoming is that rolled steel dosage is big, because full length fastening needs the bigger power that is screwed into.Therefore, the scope of application is subjected to certain limitation, hard following rock and heading in being mainly used in.
On August 12nd, 1998, China Changchun Coal Science ﹠ Tech. Center utility model patent (patent No.: ZL98238565.X) proposed a kind of full length fastening formula Anchoring-bolt for rock, adopt the tightening latch of tubular or round steel type, the shape seam has reinforcing bar in the shape of a spiral on the tightening latch surface, the reinforcing bar front end is close to that seam has alloy sword head on the tightening latch outer wall, has and convenient nut, back-up ring or the seam screw rod behind back-up ring that is connected of erecting tools in the seam of tightening latch rear portion.Its weak point be with spiral reinforcement and the seam of alloy sword head in screw surface, the processing request height, quality is difficult for guaranteeing, and needs the bigger power that is screwed into.
The purpose of this utility model be to avoid the weak point of above-mentioned existing anchor pole and a kind of province steel, reliable in quality are provided, anchored force is big, manufacture craft is simple, easy for installation, both be applicable to that weak stratum also was applicable to competent bed and can reclaims multiplexing head of screw anchor pole.
The technical solution of the utility model is: conjuncted or separate a cylindrical or cast metal anchor head is set at the front end of the round steel or the tubular body of rod, and be to form by pig iron casting or with garden steel car system or with steel pipe rolling (or car system).
The grappling screw thread is arranged, so that be screwed into rock mass and produce anchored force on the anchor head external surface with its interlock.
The anchor head rear end has the groove of two symmetries, to insert screwing tool easily.
With the anchor head of garden steel car system, be drilled with a tapped connecting hole on the axis of rear end; The front end car of anchor rod body has external screw thread; When the body of rod was screwed on anchor head, its front end external screw thread connected with the interlock of connecting hole internal thread.
When anchor head was tubular, its rear and front end respectively was provided with a cover plate that has mesopore, and the anchor rod body front end inserts in anchor head and the cover plate mesopore and makes body of rod top protrude from front shroud slightly, the body of rod and cover plate and the anchor head join one that is welded.
Head of screw anchor pole of the present utility model is compared with existing anchor pole, have save steel, reliable in quality, anchored force is big, manufacture craft is simple, easy for installation, installation quality guarantees easily and can reclaim positive effects such as multiplexing.
The utility model has the following drawings:
Fig. 1 is the overall structure schematic diagram of the utility model head of screw anchor pole;
Fig. 2 is for adopting the anchored end longitudinal sectional drawing of cast molding anchor head;
Fig. 3 is the anchored end longitudinal sectional drawing of the assembling solid anchor head that adopts round rolling or car system and form;
Fig. 4 is for adopting the anchored end longitudinal sectional drawing of tubular assembling anchor head.
Below in conjunction with accompanying drawing the utility model embodiment is described in detail:
Embodiment one:
As shown in Figure 1 and Figure 2, the utility model is the head of screw anchor pole of the solid anchor head of cast molding, is made up of the body of rod 1, anchor head 2, backing plate 5, nut 6.Adopting round steel or tubular metal is the body of rod 1, forms anchor head 2 at its front end with pig iron direct pouring.Anchor head 2 is for external surface has the cylindrical, massive body of grappling screw thread 3, can make anchor pole be screwed in the rock mass easily and makes grappling screw thread 3 and rock interlock produce anchored force.
When rock mass was hard, anchor head 2 rear ends can have the groove 7 of two symmetries, and are down auxiliary at it with the convenient screwing tool that has two card bases that inserts, and can be screwed into easily in the pre-drilled petrosal foramen.The body of rod 1 rear end is the same with common end anchorage anchor pole to be threaded 4, so that cover upper padding plate 5 after at the bottom of anchor pole is screwed onto the hole, the nut 6 screwed on are in addition fastening.The anchor head screw thread of the utility model head of screw anchor pole tightly embeds rock mass, forms anchored end, adds tightening of rear end nut, has just realized anchorage effect of the present utility model.
Embodiment two:
As Fig. 1, shown in Figure 3, the utility model is made up of the body of rod 1, the anchor head 2 that has grappling screw thread 3 and groove 7, backing plate 5 and nut 6 for the head of screw anchor pole of the assembling solid anchor head of employing round steel car system.The body of rod 1 front end external surface is threaded 10, and back end outer surface is threaded 4.Be drilled with tapped connecting hole 8 on the rear end axis of the assembling solid anchor head 2 of employing round steel car system, when anchor rod body 1 was screwed on anchor head, its front end external screw thread 10 connected with the internal thread interlock of connecting hole 8.
Embodiment three:
As Fig. 1, shown in Figure 4, the utility model is formed by being threaded 4 the body of rod 1, the anchor head 2 that has grappling screw thread 3 and groove 7, cover plate 9, backing plate 5 and nut 6 for adopting the assembling head of screw anchor pole of tubular anchor head.Tubular anchor head 2 adopts steel pipe car system or rolling forming, and its rear and front end respectively is provided with a cover plate 9 that has mesopore, and anchor rod body 1 front end inserts in the mesopore of anchor head 2 and cover plate 9, and makes the body of rod 1 top protrude from front shroud 9 slightly.One then is welded the body of rod 1 and cover plate 9 and anchor head 2 joins.
Claims (9)
1. head of screw anchor pole, adopting round steel or tubular metal is the body of rod, rear end at the body of rod is threaded, and configuration backing plate, nut, so that it is fastening that anchor pole is screwed into the nut of being screwed on behind the petrosal foramen, it is characterized in that: conjuncted or separate a cylindrical or tubular metal anchor head is set at the front end of the body of rod (1).
2. according to the said head of screw anchor pole of claim 1, it is characterized in that on said anchor head (2) external surface grappling screw thread (3) being arranged, so that be screwed into rock mass and produce anchored force with its interlock.
3. according to claim 1 or 2 said head of screw anchor poles, the rear end of anchor head (2) has the groove (7) of two symmetries, with the convenient screwing tool that inserts.
4. according to claim 1 or 2 or 3 said head of screw anchor poles, it is characterized in that said anchor head (2) adopts round steel car system to form, and is drilled with a tapped connecting hole (8) on the axis of its rear end; Anchor rod body (1) front end car has external screw thread (10); When the body of rod (1) was screwed on anchor head (2), its front end external screw thread (10) connected with the internal thread interlock of connecting hole (8).
5. according to claim 1 or 2 or 3 said head of screw anchor poles, it is characterized in that said anchor head (2) is tubular anchor head, its rear and front end respectively is provided with a cover plate (9) that has mesopore, anchor rod body (1) front end inserts in it and makes the body of rod (1) top protrude from front shroud (9) slightly, the body of rod (1) and cover plate (9) and anchor head (2) the join one that is welded.
6. head of screw anchor pole according to claim 1 is characterized in that described metal anchor head is to be formed by pig iron casting.
7. head of screw anchor pole according to claim 1 is characterized in that described metal anchor head is to form with round steel car system.
8. head of screw anchor pole according to claim 1 is characterized in that described metal anchor head is to form with steel pipe rolling.
9. head of screw anchor pole according to claim 1 is characterized in that described metal anchor head is to form with steel pipe car system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01220452 CN2480547Y (en) | 2001-03-29 | 2001-03-29 | Anchoring-bolt with screw end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01220452 CN2480547Y (en) | 2001-03-29 | 2001-03-29 | Anchoring-bolt with screw end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2480547Y true CN2480547Y (en) | 2002-03-06 |
Family
ID=33638046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01220452 Expired - Fee Related CN2480547Y (en) | 2001-03-29 | 2001-03-29 | Anchoring-bolt with screw end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2480547Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011103937A3 (en) * | 2010-02-23 | 2012-08-23 | Hilti Aktiengesellschaft | Reinforcing and/or anchoring screw |
| CN109972613A (en) * | 2019-04-28 | 2019-07-05 | 中冶沈勘工程技术有限公司 | Recoverable anchoring mechanism and construction method |
-
2001
- 2001-03-29 CN CN 01220452 patent/CN2480547Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011103937A3 (en) * | 2010-02-23 | 2012-08-23 | Hilti Aktiengesellschaft | Reinforcing and/or anchoring screw |
| CN109972613A (en) * | 2019-04-28 | 2019-07-05 | 中冶沈勘工程技术有限公司 | Recoverable anchoring mechanism and construction method |
| CN109972613B (en) * | 2019-04-28 | 2024-02-23 | 中冶沈勘工程技术有限公司 | Recyclable anchoring mechanism and construction method |
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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 |