CN210714742U - Device for enhancing stress of anchor rod tail thread section - Google Patents
Device for enhancing stress of anchor rod tail thread section Download PDFInfo
- Publication number
- CN210714742U CN210714742U CN201920981338.8U CN201920981338U CN210714742U CN 210714742 U CN210714742 U CN 210714742U CN 201920981338 U CN201920981338 U CN 201920981338U CN 210714742 U CN210714742 U CN 210714742U
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- CN
- China
- Prior art keywords
- sleeve pipe
- thread section
- anchor
- section
- stock
- 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
Links
- 230000002708 enhancing effect Effects 0.000 title description 2
- 239000002184 metal Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 17
- 238000012856 packing Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003245 coal Substances 0.000 abstract 1
- 230000008093 supporting effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a strengthen device of stock tail screw thread section atress. It includes normal body section of the pole of stock, anchor tail screw thread section, tray, spacing sleeve pipe, taper sleeve pipe, packing ring, nut and tray between be equipped with packing ring, taper sleeve pipe, spacing sleeve pipe in proper order, spacing sleeve pipe cover outside the taper sleeve pipe and extrude each other, spacing sleeve pipe and taper sleeve pipe's through-hole internal diameter and the normal body section external diameter phase-match of pole of stock. The utility model discloses can avoid anchor tail screw thread section to take place to break before the normal body of rod of high strength stock yields. The anchor rod support has the advantages of convenience in installation, reliable effect, strong adaptability and the like, and has a wide application prospect in high-stress deep coal and rock mass anchor rod support.
Description
Technical Field
The utility model relates to a deep rock mass engineering anchor bolt support field, concretely relates to strengthen device of stock tail screw thread section atress.
Background
The anchor bolt support is an important support form of underground rock engineering, and has the advantages of good support effect, low support cost and the like. Along with the increasing extension of mine resources to deep mining, high ground stress, power disturbance and other complex deep surrounding rock states put high requirements on anchor rod supporting, and from the experience of anchor rod supporting practices of deep rock mass engineering at home and abroad, high-strength anchor rods and ultrahigh-strength anchor rods are the application development direction of deep supporting. At present, the anchor tail of the anchor rod at home and abroad generally adopts a thread structure so as to press a supporting plate by a nut to apply prestress, so that the problem of the tail part of the anchor rod is very outstanding. The normal body section of the pole body needs to be cut in the processing of stock tail screw thread, the internal diameter of the screw thread of stock screw thread section is 84% -90% of the nominal diameter of the normal body of rod, the stock screw thread section is the weakest part in the whole body of rod, the wasting of the intensity of stock material is 20%, simultaneously, deep country rock that the stock was strutted produces the deformation easily under high ground stress, lead to eccentric load to act on the stock afterbody, the stock tail screw thread section is the position that the atress is the most complicated again, consequently, the broken inefficacy of anchor tail often takes place, the whole performance of load strength and the extensibility of the body of restricting high strength, arouse deep country.
In order to solve the problem of breakage caused by unequal diameters of a bolt tail thread section and a normal rod body in deep roadway surrounding rock support of a high-strength bolt, the treatment mode of the bolt tail thread section of the high-strength bolt is mainly focused on thickening the diameter of the bolt tail and heat treatment strengthening of the bolt tail thread section. CN102691513A discloses a high-strength metal thick tail yielding anchor rod, which is characterized in that the anchor tail is subjected to upsetting and high-temperature treatment to make the rod body have a thick and high-strength anchor tail, but under the condition, the anchor tail upsetting process is complex, the heating of the anchor tail section is uneven, and the connecting position of the anchor tail upsetting portion and the rod body is not properly treated, so that the stress concentration still occurs to affect the anchoring strength of the anchor rod. In addition, when the surface of the roadway is uneven, the drilled hole can deviate from the vertical plane of the rock wall, so that the tail of the anchor rod generates bending load, and the anchor tail is broken and fails.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that prior art exists, the utility model provides a strengthen device of stock tail screw thread section atress.
The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides a strengthen device of stock tail screw thread section atress, includes normal pole body section of stock, anchor tail screw thread section, tray, spacing sleeve pipe, taper sleeve pipe, packing ring, nut, be equipped with packing ring, taper sleeve pipe, spacing sleeve pipe between nut and the tray in proper order, spacing sleeve pipe cover is outside the taper sleeve pipe and extrudees each other, spacing sleeve pipe and taper sleeve pipe's through-hole internal diameter and anchor tail screw thread section external diameter phase-match.
In the device for reinforcing the stress of the tail thread section of the anchor rod, the outer surface of the limiting sleeve comprises a hemispherical cambered surface section and an extrusion section, and one end of the hemispherical cambered surface section is in contact with the tray.
In the device for reinforcing the stress of the anchor rod tail thread section, the conical sleeve is provided with two or more than two slits along the axial direction.
The technical effects of the utility model reside in that: the utility model discloses be equipped with the packing ring in proper order between current nut and tray, the taper sleeve pipe, spacing sleeve pipe, and design into the hemisphere cambered surface with spacing sleeve pipe bottom, high strength stock anchor tail screw thread section atress turns into the normal body of rod section atress of stock like this, and realize rectifying to normal body of rod section aligning, alleviate the crooked load influence of country rock wall unevenness to anchor tail screw thread section production, and simultaneously, also can ensure under the power disturbance condition taper sleeve pipe not break away from with spacing sleeve pipe vibration, effectively improve deep country rock anchor bolt supporting effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the middle limit sleeve of the present invention.
Fig. 3 is a schematic structural diagram of the middle tapered bushing of the present invention.
Fig. 4 is an installation schematic diagram of the present invention.
In the figure: 1-normal rod section of high-strength anchor rod, 2-tray, 3-spacing sleeve, 31-hemisphere cambered surface section, 32-extrusion section, 33-extrusion section inner wall, 4-taper sleeve, 41-slotting, 5-metal washer, 6-epoxy washer, 7-nut, 8-anchor tail thread section, 9-rock wall.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model discloses a normal pole body section 1 of stock, tray 2, spacing sleeve pipe 3, taper sleeve pipe 4, metal packing ring 5, epoxy packing ring 6, nut 7 and anchor tail screw thread section 8 are equipped with epoxy packing ring 6, metal packing ring 5, taper sleeve pipe 4, spacing sleeve pipe 3 between nut 7 and the tray 2 in proper order. As shown in fig. 2, the limiting sleeve 3 is divided into two parts, namely a hemispherical cambered surface section 31 and an extrusion section 32, in appearance, the inner wall 33 of the extrusion section 32 is designed into a circular table surface and is matched with the outer surface of the conical sleeve 4, and the inner diameters of the through holes of the limiting sleeve 3 and the conical sleeve 4 are matched with the outer diameter of the normal rod section 1 of the anchor rod. As shown in fig. 3, two or three slits are arranged on the conical sleeve 4 at equal intervals along the axial direction, so that the conical sleeve is convenient to adapt to clamping the anchor rod body.
As shown in fig. 4, fig. 4 is an installation schematic diagram of the present invention. The utility model discloses an installation and theory of operation as follows: drilling a drilled hole with a proper size in the rock wall 9 according to the diameter and the length of the normal rod section 1 of the anchor rod, putting a binder into the hole, anchoring the normal rod section 1 of the anchor rod in the hole, and exposing the anchor tail thread section 8 out of the surface of the rock wall 9; sequentially sleeving a tray 2, a limiting sleeve 3, a conical sleeve 4, a metal gasket 5, an epoxy resin gasket 6 and a nut 7 on a rod body of an anchor tail thread section 8, preliminarily screwing the nut 7 through anchor rod drilling to enable the limiting sleeve 3 to press the tray 2 tightly, enabling the tray 2 to cling to a rock wall 9, further screwing the nut 7, and uniformly pressing the conical sleeve 4 into the limiting sleeve 3 through the metal gasket 5 and the epoxy resin gasket 6, so that the conical sleeve 4 can clamp a normal rod body section 1 of the anchor rod, once the surrounding rock wall 9 deforms and expands outwards, providing resistance for the normal rod body section 1 of the anchor rod clamped by the limiting sleeve 3 and the conical sleeve 4, thereby greatly relieving the stress conditions of the anchor tail thread section 8 and the nut 7, and simultaneously, the anchor tail thread section 8 and the nut 7 can prevent the conical sleeve 4 and the anchor rod from vibrating and slipping when the surrounding rock 9 is subjected to disturbance load, effectively improve the anchor bolt supporting effect of the deep surrounding rock.
The above embodiment is only a specific example of the present invention, and is not a limitation to the protection scope of the present invention, and those skilled in the art will not depart from the present invention, and the various changes made by the concept of the present invention still fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a strengthen device of stock tail screw thread section atress which characterized in that: the anchor rod comprises an anchor rod normal rod body section, an anchor tail thread section, a tray, a limiting sleeve, a conical sleeve, a gasket and a nut, wherein the gasket, the conical sleeve and the limiting sleeve are sequentially arranged between the nut and the tray, the limiting sleeve is sleeved outside the conical sleeve and mutually extruded, and the inner diameter of a through hole of the limiting sleeve and the conical sleeve is matched with the outer diameter of the anchor rod normal rod body section; the outer surface of the limiting sleeve comprises a hemispherical cambered surface section and an extrusion section, and one end of the hemispherical cambered surface section is in contact with the tray; the conical sleeve is provided with two or more than two slits along the axial direction.
2. The device for reinforcing the stress of the bolt tail thread section according to claim 1, wherein: the gasket is a metal gasket or an epoxy resin gasket.
3. The device for reinforcing the stress of the bolt tail thread section according to claim 1, wherein: the gasket includes a metal gasket and an epoxy gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981338.8U CN210714742U (en) | 2019-06-27 | 2019-06-27 | Device for enhancing stress of anchor rod tail thread section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981338.8U CN210714742U (en) | 2019-06-27 | 2019-06-27 | Device for enhancing stress of anchor rod tail thread section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714742U true CN210714742U (en) | 2020-06-09 |
Family
ID=70965995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920981338.8U Expired - Fee Related CN210714742U (en) | 2019-06-27 | 2019-06-27 | Device for enhancing stress of anchor rod tail thread section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714742U (en) |
-
2019
- 2019-06-27 CN CN201920981338.8U patent/CN210714742U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |