CN2090420U - Friction type anchoring-bolt with big inch tube and throughout seam - Google Patents
Friction type anchoring-bolt with big inch tube and throughout seam Download PDFInfo
- Publication number
- CN2090420U CN2090420U CN 90221736 CN90221736U CN2090420U CN 2090420 U CN2090420 U CN 2090420U CN 90221736 CN90221736 CN 90221736 CN 90221736 U CN90221736 U CN 90221736U CN 2090420 U CN2090420 U CN 2090420U
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- CN
- China
- Prior art keywords
- bolt
- pallet
- friction type
- anchoring
- seam
- 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.)
- Withdrawn
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a full-length friction type anchoring-bolt with a big inch tube seam, comprising a hollow slotted bolt body coiled by a thin steel plate and a pallet. The upper end of the bolt body forms a conical shape, and the outer diameter of the lower end of the bolt body is welded with a retainer ring. The pallet forms a dish shape, and the middle part of the pallet is punched with a round hole. The dish-shaped pallet is sheathed with the retainer ring along the bolt body, and the anchoring-bolt is pushed into a rock hole via a hammer drill until the pallet abuts a top board closely. The full-length friction type anchoring-bolt with a big inch tube seam has advanced support theory, simple structure, easy installation, large anchoring force, timely load bearing and strong supporting strain capacity, and the full-length friction type anchoring-bolt with a big inch tube seam is suitable for supporting various wall rocks.
Description
The utility model belongs to " stratum control and supporting " technical field in the underground construction.
Anchor pole is a kind of important form in the mine working supporting, and the anchor pole of producing has two types at present.A kind of is the anchoring of end points formula, and another kind is the anchoring of total length formula.The former as slot-and-wedge type, fall wedge-type, piston ring type, resin formula, cement formula.These several complex structures are installed difficulty, and the release immediately in case end points or tray portion are damaged loses support capacity.The latter such as cement mortar anchor pole, though be full length fastening, still, because the cement shear resistance is poor, mounting process complexity, quality can not guarantee, so influence supporting effect; Resin anchor also can be done full length fastening, but cost is higher; Also have minor diameter pipe seam formula anchor pole, because bore diameter is little, deslagging difficulty when causing creeping into, therefore, give to install and also brought inconvenience, moreover driving is installed the drill bit that can not use same diameter with anchor pole, beat armature boring, drill bit consumption is big, causes the anchor pole mounting cost higher.
In view of above-mentioned problems of the prior art, it is a kind of simple in structure, easy for installation that the purpose of this utility model will provide exactly, and have the full length fastening formula anchor pole of unique mechanical properties.
Having the body of rod and pallet two parts of seam during this anchor pole is rolled into by steel sheet in vain forms.The body of rod (1) length is 1.9～1.5m, body of rod external diameter ∮ 43.7～38mm, and wide (2) 12～14mm of body of rod axial slit, body of rod upper end is the garden taper, its external diameter ∮ 40～36mm, the long 40～50mm of garden awl.The baffle ring (3) of ∮ 6～8mm opening of weldering (A/F is wide consistent with body of rod axial slit) on the external diameter of body of rod lower end.See that the used material of Fig. 1 body of rod is A
3Steel sheet, its thickness are 3～2.7mm.
Pallet (1) is dish (square and garden shape all can), and its specification 150 * 150mm makes a call to hole, a garden (2) in the middle of pallet, and the diameter in hole is seen Fig. 2 than the big 2～3mm(of the body of rod), material therefor: thickness is the A of 4.5～5mm
3Steel plate or thickness are that 5～6mm cast steel all can.
The utility model is achieved in that when installing: 1, with common air rock drill or hydraulic drill rig perforating, bit diameter is less than anchor pole external diameter 1～1.7mm.2, the convex surface of dished wheel (1) is downward, from centre bore (2) along body of rod cover to the baffle ring place.3, a drilling rod that is about 1～0.8m is installed on common air rock drill, and on drilling rod, is overlapped a useless bit shank cover.4, earlier drilling rod is inserted under the anchor pole in the stomidium, then, again body of rod taper upper end is inserted in the boring of having accomplished fluently, start air rock drill or hydraulic mounting machine is installed propelling, till pallet is adjacent to the top board face, promptly installs and be over.
The principle of large-diameter pipe seam total length frictional rock bolt is: after in anchor pole is squeezed into less than the country rock hole of anchor pole external diameter, the elasticity of utilizing seamed pipe makes anchor pole and hole wall produce frictional resistance to the radial compressive stress that hole wall produces.In addition, add the supporting force of the pallet of anchor pole lower end, make country rock be in triaxial stress state, thereby reached the reinforcing country rock, stop it to move, make it stable purpose.
This anchor pole mechanical property uniqueness, the support principle advanced person, anchored force is big, and simple in structure, and is easy for installation.Comparing with other anchor poles has following advantage:
1, after anchor pole is squeezed in the hole, generation hoop tensofriction power and pallet make it to be subjected to multidirectional constraint to the pressure of country rock, form a pressure reinforce belt around anchor pole, just as country rock has been applied prestressing force, promote roadway surrounding rock carrying arch to become and reinforcing, make country rock play the effect of self-supporting.
2, meet soft rock distortion or concussion of blasting when disturbing, the prolongation that its anchored force can be in time and increasing.
3, after anchor pole is squeezed into boring, can carry immediately, can guarantee safe construction.
4, overload capacity is strong, can move with country rock is whole during overload.When country rock moves when stopping, its anchored force is constant.
5, have certain flexibility, shear resistance is strong.
6, anchored force can be adjusted in design.
Large-diameter pipe seam total length frictional rock bolt is compared with other traditional type anchor poles, the support principle advanced person, carrying in time, the supporting strong adaptability, simple in structure, easy for installation, guarantee installation quality, anchored force is big and stable, and material source is extensive, is applicable to the supporting of each class surrounding rock in mine working and the underground construction.
Fig. 1 pipe-seam type anchor rod schematic diagram
1---the body of rod; 2---stitch wide; 3---baffle ring
Fig. 2 pallet schematic diagram
1---pallet; 2---centre bore
Claims (3)
1, large-diameter pipe seam total length frictional rock bolt is made up of the body of rod and pallet, and it is characterized in that: the body of rod is rolled into steel sheet, in have seam in vain, length is 1.9～1.5m; External diameter is ∮ 43.7～38mm.
2, according to the described large-diameter pipe seam of claim 1 total length frictional rock bolt, it is characterized in that: the used material of anchor pole is A
3Steel sheet, its thickness are 3.0～2.7mm.
3, according to claim 1 or 2 described large-diameter pipe seam total length frictional rock bolts, it is characterized in that: anchor pole external diameter and bit diameter differ from 1～1.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221736 CN2090420U (en) | 1990-10-04 | 1990-10-04 | Friction type anchoring-bolt with big inch tube and throughout seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221736 CN2090420U (en) | 1990-10-04 | 1990-10-04 | Friction type anchoring-bolt with big inch tube and throughout seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2090420U true CN2090420U (en) | 1991-12-11 |
Family
ID=4899823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90221736 Withdrawn CN2090420U (en) | 1990-10-04 | 1990-10-04 | Friction type anchoring-bolt with big inch tube and throughout seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2090420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805838A (en) * | 2014-01-24 | 2015-07-29 | 河南理工大学 | Closed tube seam anchor rod body |
| CN105156108A (en) * | 2015-08-26 | 2015-12-16 | 长治市永华机械有限公司 | Dual-power multifunctional caterpillar downhole anchoring and anchor pulling vehicle |
-
1990
- 1990-10-04 CN CN 90221736 patent/CN2090420U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805838A (en) * | 2014-01-24 | 2015-07-29 | 河南理工大学 | Closed tube seam anchor rod body |
| CN104805838B (en) * | 2014-01-24 | 2017-06-27 | 河南理工大学 | The closed type pipe seam anchor bar body of rod |
| CN105156108A (en) * | 2015-08-26 | 2015-12-16 | 长治市永华机械有限公司 | Dual-power multifunctional caterpillar downhole anchoring and anchor pulling vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |