CN103032088A - Anchor rod for supporting coal mine underworkings - Google Patents
Anchor rod for supporting coal mine underworkings Download PDFInfo
- Publication number
- CN103032088A CN103032088A CN2012105872286A CN201210587228A CN103032088A CN 103032088 A CN103032088 A CN 103032088A CN 2012105872286 A CN2012105872286 A CN 2012105872286A CN 201210587228 A CN201210587228 A CN 201210587228A CN 103032088 A CN103032088 A CN 103032088A
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- China
- Prior art keywords
- rod
- nut
- anchor rod
- coal mine
- tray
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Abstract
The invention discloses an anchor rod for supporting coal mine underworkings. The anchor rod comprises a circular rod body, a tray and a nut, wherein one side of the rod body is provided with an external thread to form a threaded segment; the tray is sleeved on the rod body; the nut is in threaded connection with the threaded segment of the rod body; relative to the tray, the nut is far away from the center of the rod body; the section of the initial part of the threaded segment is oval; and a gasket is sleeved on the rod body between the tray and the nut. When the anchor rod is adopted for supporting, pins and nuts are not required, metal scraps and metal smashed wires are not produced, and the phenomena of wear and damage of the screw thread of the threaded segment are avoided, so that the problems of wear and damage of the screw thread generated in the conventional anchor rod supporting process are solved, the anchor rod is prevented from failing and being scrapped, and the installation yield of the anchor rod is high.
Description
Technical field
The present invention relates to a kind of coal mine down-hole tunnel supporting anchor pole.
Background technology
At present, along with the development of economic construction, the open excavation of subterranean body is increasing, such as tunnel, all kinds of mines etc.In these engineering constructions, must carry out supporting to the peripheral rock in excavation tunnel, threaten the phenomenon of safety in production to occur to avoid wall rock loosening, crumbling etc.
Existing roadway support anchor pole, it comprises the circular body of rod, pallet, nut, one side of the body of rod is shaped with external screw thread and forms a thread segment, tray sleeve is contained on the body of rod, the thread segment of nut and the body of rod spins, with respect to pallet, nut also obtains axial location by the pin that runs through both away from the center of the body of rod between nut and the body of rod.The body of rod generally adopts screw-thread steel to make, and pin generally adopts No. 8 iron wires to make.
Existing jumbolter is provided with sleeve, and the structure of sleeve is: the rear side of sleeve is the square pole that is connected with jumbolter, establish in the front side of sleeve one extend axially and with the suitable hexagon counterbore of the nut in the existing anchor pole.
The processing step that carries out supporting by existing anchor pole is:
1, Anchor Agent is packed into boring in;
2, remove pallet from the body of rod, allow nut pierce into (being the inside and outside socket of sleeve of nut and existing jumbolter) in the hexagon counterbore, allow the sleeve high speed forward of jumbolter, it is interior (in this process that anchor pole is screwed in boring in the high speed rotating mode, nut, the body of rod become as a whole, nut is stressed, passes to the body of rod via pin, screw thread), thus Anchor Agent is fully stirred;
3, after Anchor Agent solidifies, allow the sleeve high speed reverse rotation of jumbolter, pin is twisted off and screws out at a high speed nut;
4, tray sleeve is contained on the body of rod, nut is screwed on the thread segment of the body of rod and allows nut pierce in the hexagon counterbore, allow the sleeve forward of jumbolter again, the nut by forward is pressed on pallet on the country rock, finishes the supporting operation.
The broken silk of the metal fragment that produces when twisting off pin and metal, can stay between nut and the thread segment, when screwing out nut at a high speed, the broken silk meeting of metal fragment and metal and thread segment close contact, and wearing and tearing and destruction appear in the screw thread that causes thread segment, severe patient can cause anchor pole to lose efficacy, scrap, so that the installation qualification rate of existing anchor pole is lower.
Summary of the invention
Technical problem to be solved by this invention provides the higher coal mine down-hole tunnel supporting anchor pole of a kind of installation qualification rate.
For solving the problems of the technologies described above, the invention provides a kind of coal mine down-hole tunnel supporting anchor pole, it comprises the circular body of rod, pallet, nut, one side of the body of rod is shaped with external screw thread and forms a thread segment, tray sleeve is contained on the body of rod, and the thread segment of nut and the body of rod spins, with respect to pallet, nut is away from the center of the body of rod, and the cross sectional shape of described thread segment start-up portion is oval shape.
For can concise description for the purpose of the problem, below to coal mine down-hole tunnel supporting of the present invention with anchor pole all referred to as this anchor pole.
For suitable with this anchor pole, need the structure of the sleeve of existing jumbolter is done following the improvement: establish an axially extended square counterbore in the front side of sleeve in also, square counterbore is at the bottom of the hole of hexagon counterbore and between the bar head of square pole, and the hexagon counterbore is connected with square counterbore at the bottom of by its hole.
The processing step that carries out supporting by this anchor pole is:
1, Anchor Agent is packed into boring in;
2, remove pallet, nut from the body of rod, allow the thread segment start-up portion insert through the hexagon counterbore that (start-up portion of thread segment is tabular in the square counterbore, just can match with square counterbore), namely allow thread segment be socketed with the sleeve of the rear jumbolter of improvement is inside and outside, allow again the sleeve high speed forward of jumbolter, anchor pole is screwed in the high speed rotating mode (in this process, only the thread segment start-up portion is stressed in the boring, and pass to the body of rod), thus Anchor Agent is fully stirred;
3, after Anchor Agent solidifies, tray sleeve is contained on the body of rod, nut is screwed on the thread segment of the body of rod and allows nut pierce in the hexagon counterbore, allow again the sleeve forward of jumbolter, the nut by forward is pressed on pallet on the country rock, finishes the supporting operation.
When adopting this anchor pole to carry out supporting, need not by pin, nut, so can not produce the broken silk of metal fragment and metal, can not cause the screw thread of thread segment wearing and tearing and destruction to occur, solved at one stroke thread abrasion and the destruction problem that produces in the existing bolt support process, can not cause anchor pole to lose efficacy, scrap, so that the installation qualification rate of this anchor pole is higher.
Between pallet, nut, locate also to be set with a packing ring on the described body of rod.Like this, can make the connection between pallet, the nut convenient, firm.
This anchor pole is specially adapted to the supporting of coal mine down-hole tunnel, and other tunnel, all kinds of mine are also applicable, and application is comparatively extensive.
Description of drawings
Fig. 1 is the structural representation of this anchor pole.
Fig. 2 is the A-A amplification view of Fig. 1.
The specific embodiment
Below by embodiment and accompanying drawing this anchor pole is described in further detail:
Referring to Fig. 1, Fig. 2, this anchor pole comprises the circular body of rod 1, pallet 2, nut 4, the right side of the body of rod 1 is shaped with external screw thread and forms a thread segment 11, pallet 2 is sleeved on the body of rod 1, nut 4 spins with the thread segment 11 of the body of rod 1, and with respect to pallet 2, nut 4 is away from the center of the body of rod 1, the cross sectional shape of the start-up portion 12 of thread segment 11 is oval shape, so that the start-up portion 12 of thread segment 11 has two planes that are parallel to each other 13.Between pallet 2, nut 4, locate also to be set with a packing ring 3 on the body of rod 1.
Above-described only is one embodiment of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make apparent some conversion or alternative and remodeling, these also should be considered as belonging to protection scope of the present invention.
Claims (2)
1. coal mine down-hole tunnel supporting anchor pole, it comprises the circular body of rod, pallet, nut, one side of the body of rod is shaped with external screw thread and forms a thread segment, tray sleeve is contained on the body of rod, the thread segment of nut and the body of rod spins, with respect to pallet, nut is characterized in that away from the center of the body of rod: the cross sectional shape of described thread segment start-up portion is oval shape.
2. coal mine down-hole tunnel supporting anchor pole according to claim 1 is characterized in that: locate also to be set with a packing ring on the described body of rod between pallet, nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105872286A CN103032088A (en) | 2012-12-29 | 2012-12-29 | Anchor rod for supporting coal mine underworkings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105872286A CN103032088A (en) | 2012-12-29 | 2012-12-29 | Anchor rod for supporting coal mine underworkings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103032088A true CN103032088A (en) | 2013-04-10 |
Family
ID=48019429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105872286A Pending CN103032088A (en) | 2012-12-29 | 2012-12-29 | Anchor rod for supporting coal mine underworkings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103032088A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201180553Y (en) * | 2008-03-18 | 2009-01-14 | 中国矿业大学 | Slip casting anchor bar |
| CN201377333Y (en) * | 2009-04-02 | 2010-01-06 | 唐忠明 | Expansion type recyclable rock bolt |
| CN201420397Y (en) * | 2009-05-14 | 2010-03-10 | 林光明 | Watertight screw rod |
| WO2011149420A1 (en) * | 2010-05-26 | 2011-12-01 | Luossavaara-Kiirunavaara Ab | Rock bolt embedded in grout |
| CN202165371U (en) * | 2011-07-29 | 2012-03-14 | 瑞标集团有限公司 | Nut with chip removal grooves |
| CN203130127U (en) * | 2012-12-29 | 2013-08-14 | 施力芳 | Anchor rod used for underground coal mine roadway supporting |
-
2012
- 2012-12-29 CN CN2012105872286A patent/CN103032088A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201180553Y (en) * | 2008-03-18 | 2009-01-14 | 中国矿业大学 | Slip casting anchor bar |
| CN201377333Y (en) * | 2009-04-02 | 2010-01-06 | 唐忠明 | Expansion type recyclable rock bolt |
| CN201420397Y (en) * | 2009-05-14 | 2010-03-10 | 林光明 | Watertight screw rod |
| WO2011149420A1 (en) * | 2010-05-26 | 2011-12-01 | Luossavaara-Kiirunavaara Ab | Rock bolt embedded in grout |
| CN202165371U (en) * | 2011-07-29 | 2012-03-14 | 瑞标集团有限公司 | Nut with chip removal grooves |
| CN203130127U (en) * | 2012-12-29 | 2013-08-14 | 施力芳 | Anchor rod used for underground coal mine roadway supporting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |