CN103161485B - Pre-stressed anchoring conduit - Google Patents
Pre-stressed anchoring conduit Download PDFInfo
- Publication number
- CN103161485B CN103161485B CN201110421059.4A CN201110421059A CN103161485B CN 103161485 B CN103161485 B CN 103161485B CN 201110421059 A CN201110421059 A CN 201110421059A CN 103161485 B CN103161485 B CN 103161485B
- Authority
- CN
- China
- Prior art keywords
- rod
- nut
- expanded core
- anchor
- anchoring conduit
- 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.)
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Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000011435 rock Substances 0.000 abstract description 7
- 238000007569 slipcasting Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006011 modification reaction Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention relates to a kind of pre-stressed anchoring conduit, be a kind of improvement to existing pipe-seam type anchor rod, including: the body of rod, expanded core, backing plate, nut；This body of rod first half described is the tubulose body of rod of a band longitudinal joint, latter half is one section and is made by seamless steel pipe and screw-shaped hollow bolt body is helped in roll forming, welded connecting into an entirety, described lever front end is provided with expanded core, and described body of rod rear end is provided with nut and backing plate.It is solid that this anchor pole can realize top, dramatically increases anchor force, simultaneously can be by hollow bolt body to rock stratum slip casting.Additionally tail end nut replaces draw ring, more firm.This anchor pole cost of manufacture is cheap, is remarkably improved the anchoring effect of pipe-seam type anchor rod, has higher economic benefit.
Description
Technical field
The present invention relates to one and belong to Geotechnical Engineering supporting field, particularly relate to a kind of novel pre-stressed anchoring conduit, be right
A kind of improvement of existing pipe-seam type anchor rod.
Background technology
Pipe-seam type anchor rod is known.Pipe-seam type anchor rod is a kind of full length fastening, the anchor pole actively reinforcing country rock, mainly fits
Gib or permanent support for well lanes engineering such as mine metallurgy, water power, railways.Its body portion is to use high intensity
Metal plate coils is pressed into the tubulose body of rod of band longitudinal joint, and tail end is welded with draw ring, supports the use with supporting plate.When it is arranged on more slightly smaller than caliber
Boring time, can immediately in length range to hole wall apply radial pressure and produce stop country rock glide frictional force, add
The supporting force of anchor rod pallet board supporting plate, so that country rock is in triaxial stress state, it is achieved owing to tube wall elasticity tension force extrudes hole wall
And the friction anchoring power produced, it is the anchor themselves formula anchor pole that actively country rock is educated in back-up coat haircut.Move at blasting vibration country rock anchor
When, later stage anchor force is significantly increased, and when country rock occurs notable displacement, anchor pole does not lose its supporting drag.
This known pipe-seam type anchor rod, its major defect has: (1) anchor force is relatively low, is mainly manifested in top anchor force
Little, anchor pole does not mates with bore diameter aperture ratio, installs not in place etc., and the draw ring of (2) tail end welding, because welding quality is asked
Topic, easily comes off during installing and using, thus causes the generation of contingency；(3) cannot slip casting, the body of rod is perishable,
The requirement of permanent support cannot be adapted to.
As can be seen here, above-mentioned existing pipe-seam type anchor rod in structure and uses, it is clear that still suffered from inconvenience and defect, and
Urgently it is further improved.The most how to found the pre-stressed anchoring conduit of a kind of new structure, also becoming current industry pole need to change
The target entered.
Summary of the invention
It is an object of the invention to, overcome the defect that existing pipe-seam type anchor rod exists, and a kind of new structure is provided
Pre-stressed anchoring conduit, to be solved technical problem is that make its anchor rod body latter half be one section by seamless steel pipe make and roll forming become
The hollow bolt body of full thread shape, welded and first half connects into an entirety, thus makes it have slip casting function.The body of rod
Front end is provided with pawl equipped with expanded core, inside.After rockbolt installation, using jacking instrument jacking, expanded core front end is opened, thus real
The anchoring of existing lever front end.Body of rod tail end can install nut.During installation, anchor pole is squeezed into inside ground, and after the anchoring of front end, backing plate is tight
Patch crag, nut tightening can effectively prevent supporting plate loosen come off from the body of rod.
The object of the invention to solve the technical problems realizes by the following technical solutions.Propose according to the present invention
A kind of pre-stressed anchoring conduit, be a kind of improvement to existing pipe-seam type anchor rod.Including: the body of rod, expanded core, backing plate, nut；Institute
Stating the tubulose body of rod that this body of rod first half is a band longitudinal joint, this body of rod latter half described is one section and is made also by seamless steel pipe
Screw-shaped hollow bolt body is helped in roll forming, welded connects into an entirety, and described lever front end is provided with expanded core, described
Body of rod rear end is provided with nut and backing plate.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid a kind of pre-stressed anchoring conduit, wherein said anchor rod body latter half is one section and is made by seamless steel pipe and roll
It is bundled into the hollow bolt body of full thread shape；
Aforesaid a kind of pre-stressed anchoring conduit, wherein said anchor rod body latter half becomes one by welding and first half
Individual entirety；
Aforesaid a kind of pre-stressed anchoring conduit, the expanded core quantity of wherein said lever front end can be one or one with
On；
Aforesaid a kind of pre-stressed anchoring conduit, wherein said body of rod tail end is fixed by nut；
Aforesaid a kind of pre-stressed anchoring conduit, wherein said described body of rod tail end nut shape is hexagon or hemispherical.
The present invention compared with prior art has clear advantage and beneficial effect.As known from the above, for reaching above-mentioned mesh
, the invention provides a kind of pre-stressed anchoring conduit, be a kind of improvement to existing pipe-seam type anchor rod.Including: the body of rod, expanded core, pad
Plate, nut；This body of rod first half described is the tubulose body of rod of a band longitudinal joint, this body of rod latter half described be one section by seamless
Screw-shaped hollow bolt body is helped in steel pipe manufacturing roll forming, welded connects into an entirety, and described lever front end is provided with
Expanded core, described body of rod rear end is provided with nut and backing plate.Anchor rod body latter half is one section and is made by seamless steel pipe and roll
Being bundled into the hollow bolt body of full thread shape, welded and first half connects into an entirety, thus makes it have slip casting function.
Lever front end is provided with pawl equipped with expanded core, inside.After rockbolt installation, using jacking instrument jacking, expanded core front end is opened, from
And realize the anchoring of anchor pole front end.Body of rod tail end can install nut.During installation, anchor pole is squeezed into inside ground, after the anchoring of front end, and pad
Crag is close to by plate, nut tightening can effectively prevent supporting plate loosen come off from the body of rod.
By technique scheme, pre-stressed anchoring conduit of the present invention at least has following advantages and a beneficial effect:
1, anchor rod body latter half is one section and is made by seamless steel pipe and screw-shaped hollow bolt body, warp are helped in roll forming
Welding and first half connect into an entirety, thus make it have slip casting function.
2, anchor rod body front end is provided with pawl equipped with expanded core, inside.After rockbolt installation, use jacking instrument jacking, swollen
Expansion core front end is opened, thus realizes the anchoring of anchor pole front end
3, anchor rod body tail end can install nut.During installation, anchor pole is squeezed into inside ground, and after the anchoring of front end, backing plate is close to
Crag, nut tightening can effectively prevent supporting plate loosen come off from the body of rod.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of pre-stressed anchoring conduit.
Fig. 2 is expanded core generalized section.
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention, below in conjunction with
Accompanying drawing and preferred embodiment, to its detailed description of the invention of pre-stressed anchoring conduit, structure, feature and effect thereof of proposing according to the present invention,
After describing in detail such as.
Fig. 1 is the structural representation of pipe seam formula deformation anchor pole.The body of rod 3 first half is the tubulose body of rod of a band longitudinal joint, after
Half part is one section and is made by seamless steel pipe and screw-shaped hollow bolt body is helped in roll forming, welded connects into an entirety,
It is achieved thereby that anchoring and the unification of slip casting function；
Expanded core 4 is internal is provided with pawl.After rockbolt installation, using jacking instrument jacking, expanded core 4 front end is opened, thus
Realize the anchoring of anchor pole front end；Backing plate 2 nut 1, is close to backing plate on crag by screw thread.
Fig. 2 is expanded core generalized section.Cracking in expanded core 4 front end, is provided with pawl 5, and built-in wedge 6, action principle is near
Like setscrew, after rockbolt installation, using jacking instrument jacking, expanded core 4 front end is opened, thus realizes a left side for front end anchoring
The right side, also struts tube wall simultaneously, makes tube wall contact with ground tightr.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people being familiar with this specialty
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit pair of the present invention
Any simple modification, equivalent variations and the modification that above example is made, all still falls within the range of technical solution of the present invention.
Claims (4)
1. a pre-stressed anchoring conduit, is a kind of improvement to existing pipe-seam type anchor rod, it is characterised in that including: the body of rod, expanded core, pad
Plate, nut；
This body of rod first half is the tubulose body of rod of a band longitudinal joint, and this body of rod latter half is one section and is made by seamless steel pipe and roll
Being bundled into the hollow bolt body of full thread shape, described body of rod latter half is welded connects into an entirety with first half；Described
Lever front end is provided with expanded core, and described body of rod rear end is provided with nut and backing plate.
A kind of pre-stressed anchoring conduit the most according to claim 1, it is characterised in that: the expanded core quantity of described lever front end is one
More than individual.
A kind of pre-stressed anchoring conduit the most according to claim 1, it is characterised in that: described body of rod tail end is fixed by nut.
A kind of pre-stressed anchoring conduit the most according to claim 1, it is characterised in that: described body of rod tail end nut shape is hexagon
Or hemispherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110421059.4A CN103161485B (en) | 2011-12-16 | Pre-stressed anchoring conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110421059.4A CN103161485B (en) | 2011-12-16 | Pre-stressed anchoring conduit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161485A CN103161485A (en) | 2013-06-19 |
| CN103161485B true CN103161485B (en) | 2016-12-14 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0190460A1 (en) * | 1985-01-30 | 1986-08-13 | Dyckerhoff & Widmann Aktiengesellschaft | Anchoring device for the traction member of an anchor, especially a rock anchor |
| CN2033446U (en) * | 1988-06-01 | 1989-03-01 | 东北工学院 | Pipe gap friction expanding joint of anchor arm |
| CN201292856Y (en) * | 2008-12-08 | 2009-08-19 | 中国矿业大学(北京) | Tube seam type anchor rod |
| CN201496085U (en) * | 2009-09-18 | 2010-06-02 | 武汉武大巨成加固实业有限公司 | Rear hole expansion self-locking anchor bar capable of being installed rapidly |
| CN201924948U (en) * | 2011-02-21 | 2011-08-10 | 张子春 | Expansion type slotting anchor rod |
| CN202500590U (en) * | 2011-12-16 | 2012-10-24 | 洛阳工岩科技有限公司 | Preliminary anchor pipe |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0190460A1 (en) * | 1985-01-30 | 1986-08-13 | Dyckerhoff & Widmann Aktiengesellschaft | Anchoring device for the traction member of an anchor, especially a rock anchor |
| CN2033446U (en) * | 1988-06-01 | 1989-03-01 | 东北工学院 | Pipe gap friction expanding joint of anchor arm |
| CN201292856Y (en) * | 2008-12-08 | 2009-08-19 | 中国矿业大学(北京) | Tube seam type anchor rod |
| CN201496085U (en) * | 2009-09-18 | 2010-06-02 | 武汉武大巨成加固实业有限公司 | Rear hole expansion self-locking anchor bar capable of being installed rapidly |
| CN201924948U (en) * | 2011-02-21 | 2011-08-10 | 张子春 | Expansion type slotting anchor rod |
| CN202500590U (en) * | 2011-12-16 | 2012-10-24 | 洛阳工岩科技有限公司 | Preliminary anchor pipe |
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