CN2351554Y - Strength round steel spiral coil resin roofbolt - Google Patents
Strength round steel spiral coil resin roofbolt Download PDFInfo
- Publication number
- CN2351554Y CN2351554Y CN 99205876 CN99205876U CN2351554Y CN 2351554 Y CN2351554 Y CN 2351554Y CN 99205876 CN99205876 CN 99205876 CN 99205876 U CN99205876 U CN 99205876U CN 2351554 Y CN2351554 Y CN 2351554Y
- Authority
- CN
- China
- Prior art keywords
- rod
- round steel
- spiral coil
- anchoring
- pallet
- 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 strength round steel spiral coil resin roof bolt, belonging to a safety support device used for lanes of coal mines. The utility model overcomes the defects of lower anchoring force, higher cost, complex manufacture, and complex construction of existing roof bolts to develop a novel resin roof bolt which uses ordinary cold drawing round steel as a bolt body. One of the anchoring ends is wrapped and uniformly welded with coil loops; the other anchoring end is formed from screw thread segments through the technique of thread rolling. The utility model has the advantages of simple manufacture, low cost, simple operation, convenient use, high speed anchoring, needless maintenance, large anchoring force, and safety, and the full-length anchoring can be realized.
Description
High-strength round steel spiral coil resin anchor belongs to coal mine roadway safety support device.
At present screw-thread steel resin anchor of producing and anti-fried dough twist round steel resin anchor overcome pipe seam formula, cement paste formula, the shell that expands (or fall wedge) many disadvantages such as the ubiquitous anchored force of formula three major types anchor pole is lower, the inconvenience that easily comes off, constructs, the screw-thread steel resin anchor exists processed complex (thread segment jumping-up), the shortcoming that cost is higher though they have better anchoring force; Anti-fried dough twist round steel resin anchor is because the spiral square is big, and excesssive gap between anchored end and the rock mass can not fully stir resin explosive roll, influenced anchored force, and owing to can not realize full length fastening, cause the drawback that is unfavorable for that the split rock fuses, influenced the employing of coal mining enterprise.
The present utility model purpose is in order to overcome above problems, develop a kind of that make by smooth bar, processing is simple, cost is lower, has the high-strength round steel spiral coil resin anchor with the equal anchoring effect of screw-thread steel resin anchor again.
Below in conjunction with the description of drawings the technical solution of the utility model:
Fig. 1 is the utility model structure assembling schematic diagram
Fig. 2 is the utility model pallet schematic diagram
Fig. 3 is the utility model pallet sectional side view
In Fig. 1,1 is nut, and 2 is pallet, and 3 is the body of rod, and 4 is spiral coil, 5 indication thread segments.φ indication body of rod diameter, E indication spiral is apart from length, and L1 is a spiral coil length, and M is a thread segment diameter number.
In Fig. 2, the R mark refers to the pallet center-hole diameter, and A refers to pallet length, and B is a pallet width.
In Fig. 3, R
1Be pallet middle part hemisphere outer radius length, R
2Be its inside radius length, h refers to pallet hemisphere dome height.
Strength round steel spiral coil resin roofbolt is made of the body of rod 3, pallet 2, nut 1. The body of rod 3 one End is thread segment 5, and the upper cover of this section has pallet 2, and nut 1 is enclosed within on the thread segment of pallet 2 outer ends. This Inventive features is that the body of rod 3 adopts strength round steel, and an end of pallet 2 and nut 1 is arranged at the body of rod 3 covers The thread segment 5 that be to adopt rolled thread technology to make, the body of rod 3 other ends are provided with uniform winding and welding Spiral coil 4.
The strength round steel that need to prove the body of rod 3 employings is the smooth bar after cold-drawn, the body of rod 3 diameters are 16-24mm. The material of spiral coil 4 can be selected 8# to 12# iron according to body of rod diameter Line, also available other waste metal filament, the internal diameter of spiral coil 4 and the body of rod 3 be directly through identical, spiral Spacing and spiral coil length can be determined according to actual requirement. Its helix pitch is generally 15-80mm, Be advisable with 30-50mm, the length that spiral coil 4 twines part at the body of rod not should less than 300mm. When run into rock crushing, bedding is obvious, during the false roof thickening, needs the total length reinforcement protection, need With the length spiral circle body of rod, lengthen the spiral coil that twines this moment can be up to the thread segment place. Bar is arranged again Select round steel body of rod diameter phase before the diameter M of the other end thread segment 5 of body 3 and the body of rod 3 cold-drawns With, namely the thread segment place slightly slightly makes the thread segment tensile strength after the rolled thread strong greater than body of rod tension than bar Degree.
The utility model anchor pole carries out the cold-drawn processing and has improved body of rod Fracture Force greatly owing to adopt smooth bar, simultaneously product cost is reduced significantly, only be 60% of twisted steel anchor rod cost, and processing is simple.Because anchor pole consumption in the ore deposit is big, mineral bureau's consumption can reach 1,000,000 covers, saves 20 yuan of calculating with every cover, and only one of anchor pole just can reduce support cost for mineral bureau saves more than ten million yuan, and benefit is very considerable.Use anchor pole of the present invention simple to operate, do not need maintenance, anchoring speed is fast, disregards drilling time, only needs 8-15 can finish installation second.The present invention is owing to adopt spiral coil in anchored end, in the skyhook process, by spiral coil resin explosive roll is fully stirred, reach desirable mixing effect, make between the body of rod (comprising spiral coil) and the rock mass by resin explosive roll simultaneously to bond together, obtain bigger anchored force.The identical other spiral coil length with the screw-thread steel resin anchor of its anchoring effect is changeable, can realize full length fastening, so that anchored force strengthens, makes it safe and reliable.Through experiment anchored force＞80KN; Body of rod pull-off force＞80KN, screw thread pulling-out force＞80KN; Pallet breaking force＞80KN.The utility model is applicable to all kinds of tunnels of rock gangway, coal road of various lithology, and is applied widely, satisfies hard rock, soft rock, permanent, interim, top anchor, all kinds of anchorings of nation's anchor.
Embodiment 1:
Selecting diameter as shown in Figure 1 is that the smooth bar of 18mm carries out cold-drawn, and body of rod diameter phi is 16.4mm after the cold-drawn, then an end is made thread segment 5 with rolled thread technology, and it accounts for length on the body of rod 3 be that 150mm diameter M is 18mm.The body of rod 3 other ends be anchored end with 8# iron wire uniform winding, be welded into spiral coil.The spiral coil internal diameter is 16.4mm, and helix pitch E is 30mm, and spiral coil twines the length L of part on the body of rod
1Be 360mm.Body of rod total length L is 1600mm.Cast steel pallet 2 is set at the prestressing force type, and it is enclosed within on the thread segment.Its specification as shown in Figure 2, promptly long A is 150mm, wide B is 130mm, there is circular hole in its centre, Circularhole diameter R is 18mm.Pallet 2 middle parts are hemispherical, its shape specification as shown in Figure 3, hemisphere outer radius R
1Be 55mm, inside radius R
2Be 45mm, sagitta h is 30mm, overlaps a nut 1 again in order to fixing on the thread segment of pallet outer end.
Claims (4)
1. high-strength round steel spiral resin anchor is made of the body of rod 3, pallet 2, nut 1, the body of rod 3 one ends are thread segment 5, be with pallet 2 on this section, nut 1 is enclosed within on the thread segment of pallet 2 outer ends, it is characterized in that the body of rod 3 adopts high-strength round steel, be with the thread segment 5 of an end for adopting rolled thread technology to make of pallet 2 and nut 1 at the body of rod 3, the body of rod 3 other ends are provided with the spiral coil 4 of uniform winding and welding.
2. according to the described high-strength round steel spiral coil resin anchor of claim 1, the high-strength round steel that it is characterized in that the body of rod 3 employings is the smooth bar after cold-drawn, and the body of rod 3 diameters are 16-24mm.
3. according to the described high-strength round steel spiral coil resin anchor of claim 1, it is characterized in that the material of spiral coil 4 can select 8 for use according to body of rod diameter
#To 12
#Iron wire, also available other waste metal filament, the internal diameter of spiral coil 4 is identical with the body of rod 3 diameters, and its helix pitch is 15-80mm, is advisable with 30-50mm, and spiral coil 4 twines length partly on the body of rod should be less than 300mm.
4. according to the described high-strength round steel spiral coil resin anchor of claim 1, it is characterized in that selecting for use round steel body of rod diameter identical before diameter and the body of rod 3 cold-drawns of thread segment 5 of the body of rod 3 one ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99205876 CN2351554Y (en) | 1999-03-26 | 1999-03-26 | Strength round steel spiral coil resin roofbolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99205876 CN2351554Y (en) | 1999-03-26 | 1999-03-26 | Strength round steel spiral coil resin roofbolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2351554Y true CN2351554Y (en) | 1999-12-01 |
Family
ID=34000339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99205876 Expired - Fee Related CN2351554Y (en) | 1999-03-26 | 1999-03-26 | Strength round steel spiral coil resin roofbolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2351554Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749041A (en) * | 2009-12-21 | 2010-06-23 | 惠兴田 | Dual-anchoring rod and construction method thereof |
| CN101949296A (en) * | 2010-10-10 | 2011-01-19 | 张延策 | Reclaimable screw anchor |
| CN102691513A (en) * | 2012-05-22 | 2012-09-26 | 山东科技大学 | High-strength metal pressure-yielding anchor rod with headed tail |
| CN110259494A (en) * | 2019-06-18 | 2019-09-20 | 山东科技大学 | A kind of spiral tooth type suppression tube expansion and its application method |
| CN110821540A (en) * | 2019-12-04 | 2020-02-21 | 平顶山天安煤业股份有限公司十一矿 | Sleeve type filament-implanted composite shear-resistant anchor rod and manufacturing method thereof |
-
1999
- 1999-03-26 CN CN 99205876 patent/CN2351554Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749041A (en) * | 2009-12-21 | 2010-06-23 | 惠兴田 | Dual-anchoring rod and construction method thereof |
| CN101949296A (en) * | 2010-10-10 | 2011-01-19 | 张延策 | Reclaimable screw anchor |
| CN102691513A (en) * | 2012-05-22 | 2012-09-26 | 山东科技大学 | High-strength metal pressure-yielding anchor rod with headed tail |
| CN102691513B (en) * | 2012-05-22 | 2015-05-20 | 山东科技大学 | High-strength metal pressure-yielding anchor rod with headed tail |
| CN110259494A (en) * | 2019-06-18 | 2019-09-20 | 山东科技大学 | A kind of spiral tooth type suppression tube expansion and its application method |
| CN110821540A (en) * | 2019-12-04 | 2020-02-21 | 平顶山天安煤业股份有限公司十一矿 | Sleeve type filament-implanted composite shear-resistant anchor rod and manufacturing method thereof |
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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 |