CN2352674Y - Anchoring-bolt for rock - Google Patents
Anchoring-bolt for rock Download PDFInfo
- Publication number
- CN2352674Y CN2352674Y CN 98238565 CN98238565U CN2352674Y CN 2352674 Y CN2352674 Y CN 2352674Y CN 98238565 CN98238565 CN 98238565 CN 98238565 U CN98238565 U CN 98238565U CN 2352674 Y CN2352674 Y CN 2352674Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- tightening latch
- welded
- rock
- bolt rod
- 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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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a rock bolt, which belongs to the support tool of underground engineering. The utility model adopts a tubular or round steel-shaped bolt rod; the surface of the bolt rod is welded with a twisted bar; the front end of the twisted bar and the outer wall of the bolt rod are welded with alloy blade heads; the back end of the bolt rod is welded with a nut; the back part of the bolt rod can also be welded with a retainer ring; the bolt rod of the back side of the retainer ring is bored with a through hole; the back end of the retainer ring can also be welded with a screw. The utility model has the advantages of big anchoring force, easy installation and low cost, and is suitable for the requirements of mechanization operation. The rock bolt can be recycled.
Description
The utility model belongs to underground engineering support apparatus class.
Bolt-spary supports is one of effective, the most most economical roadway support form.Facts have proved that by present well lane engineering removing under special circumstances, Shotcrete Rockbolt Support Technique can be used for almost all surrounding rock consolidation of geotechnical engineering.The existing so far last 100 years history of Shotcrete Rockbolt Support Technique worldwide, adapts to different geological conditionss, and the anchor pole with difference in functionality and purposes has tens kinds.Mainly can be divided into for two generations:
The first generation is representative with mortar reinforcing bar or rope bolt;
The second generation is representative with cement-roll and resin reinforced anchor bolt.
Divide following three types again by anchor pole and the anchorage style of reinforcing rock mass:
1, mechanical anchor formula anchor pole (shell that expands, routine wedge, wedge meet the formula anchor pole);
2, bond-anchorage formula anchor pole (resin, rapid setting cement, cement mortar formula anchor pole);
3, friction anchoring formula anchor pole (pipe seam, tubular water expanded anchor rod).
Can be divided into forms such as end anchorage and full length fastening again by anchor rod anchored part length.The on-the-spot for many years proof of using, more than various anchor poles all exist different weakness.Though as mechanical anchor formula anchor pole simple installation, can not full length fastening; Though bond-anchorage formula anchor pole has obtained using widely, cementing agent easily lost efficacy, construction complexity or cost height, and coal sand is except that special situation adopts full length fastening, and ordinary circumstance all is used to hold the anchor form; Friction anchoring formula anchor pole (pipe meets) is though have easy construction and the advantage of full length fastening, and the initial stage anchored force is low, and construction quality is difficult to control, and consolidation effect is relatively poor.More than all kinds of anchor poles also have a common shortcoming, promptly can not reclaim and repeat to use.
The purpose of this utility model is: provide a kind of full length fastening, low, the suitable mechanized of big, the easy for installation cost of anchored force to require callable Anchoring-bolt for rock.
The technical solution of the utility model is: adopt the tightening latch of a tubular or garden steel shape, in tightening latch surface seam a spiral reinforcement is arranged.
In order to reduce precessing force, alloy sword head on spiral reinforcement front end and tightening latch outer wall.
For convenience, nut is arranged in the seam of tightening latch rear end to the tightening latch turn-knob.
For convenience, but a back-up ring is arranged, be drilled with through hole on the tightening latch of back-up ring rear side at tightening latch rear portion also seam to the tightening latch turn-knob.
For convenience, also can be welded with a screw rod in the tightening latch rear end to the tightening latch turn-knob.
Anchoring-bolt for rock of the present utility model has the good effect that big, the easy for installation cost of anchored force is low, mechanized requires recyclable repetition.
Fig. 1 is a structural representation of the present utility model.
Fig. 2, Fig. 3 are partial schematic diagrams.
Drawing explanation and embodiment are described below: 3 is tightening latches of a tubular or garden steel shape among the figure, in the surperficial seam of tightening latch 3 spiral reinforcement 2 is arranged, and reinforcing bar 2 preferably adopts and hangs down the charcoal reinforcing bar, can increase its solderability.In order to reduce the precessing force to tightening latch 3, seam has alloy sword head 1 on the outer wall of the front end of spiral reinforcement 2 and tightening latch 3.For convenience of turn-knob, but nut 4 is arranged, also can an adapter ring 5 be arranged, and on the tightening latch of adapter ring 5 rear sides, be drilled with through hole, also can be welded with a screw rod 7 in tightening latch 3 rear ends in the seam of tightening latch rear portion in the seam of the rear end of tightening latch 3 to tightening latch 3.Anchoring-bolt for rock of the present utility model tightly embeds rock mass as a king-bolt with screw thread, combines with rock mass, and all forms a local anchoring section between per two screw threads.At rock crusher, under the situation that surface, tunnel easy-weathering comes off, as long as keep the Anchoring-bolt for rock of certain-length in the rock mass, this reservation length still can be reinforced the rock mass with even depth so.Simultaneously, adding up of these local anchor sections promptly realized full length fastening.Therefore, this characteristic of Anchoring-bolt for rock has determined that effect is fine when reinforcing coal or being broken rock mass.
Claims (5)
1, a kind of Anchoring-bolt for rock is characterized in that:
A, adopt the tightening latch of a tubular or garden steel shape;
B, seam has a spiral reinforcement on tightening latch surface.
2, by the described bolt of claim 1, it is characterized in that: seam has alloy sword head on spiral reinforcement front end and tightening latch outer wall.
3, by the described bolt of claim 2, it is characterized in that: nut is arranged in the seam of tightening latch rear end.
4, by the described bolt of claim 2, it is characterized in that: in the seam of tightening latch rear portion a back-up ring is arranged, be drilled with through hole on the tightening latch of adapter ring rear side.
5, by the described bolt of claim 2, it is characterized in that: a screw rod is arranged in the seam of tightening latch rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98238565 CN2352674Y (en) | 1998-08-12 | 1998-08-12 | Anchoring-bolt for rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98238565 CN2352674Y (en) | 1998-08-12 | 1998-08-12 | Anchoring-bolt for rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2352674Y true CN2352674Y (en) | 1999-12-08 |
Family
ID=33986115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98238565 Expired - Fee Related CN2352674Y (en) | 1998-08-12 | 1998-08-12 | Anchoring-bolt for rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2352674Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050280A (en) * | 2016-07-12 | 2016-10-26 | 兖州煤业股份有限公司 | Anchor bolt supporting device |
-
1998
- 1998-08-12 CN CN 98238565 patent/CN2352674Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050280A (en) * | 2016-07-12 | 2016-10-26 | 兖州煤业股份有限公司 | Anchor bolt supporting device |
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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 |