CN203248178U - Downward-hole self-drilling grouting anchor rod - Google Patents
Downward-hole self-drilling grouting anchor rod Download PDFInfo
- Publication number
- CN203248178U CN203248178U CN 201320285123 CN201320285123U CN203248178U CN 203248178 U CN203248178 U CN 203248178U CN 201320285123 CN201320285123 CN 201320285123 CN 201320285123 U CN201320285123 U CN 201320285123U CN 203248178 U CN203248178 U CN 203248178U
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- Prior art keywords
- anchor
- grouting
- anchor rod
- self
- hole
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- 238000005553 drilling Methods 0.000 title claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 239000011440 grout Substances 0.000 claims abstract 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000007569 slipcasting Methods 0.000 description 8
- 238000004873 anchoring Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007582 slurry-cast process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
本实用新型提供了一种下向孔自钻式注浆锚杆，包括螺母、拱形垫板、止浆塞和锚杆，所述锚杆的锚杆体为中空的管状结构，锚杆体的下端设有内螺纹，并通过内螺纹与钻头连接，上部套装有止浆塞，止浆塞上方设有拱形垫板和螺母，螺母与锚杆体上端外螺纹连接；所述锚杆体的中心孔与锚杆体上的多组锥形注浆孔连通。本实用新型的锚杆体侧面上设有带排屑槽的复式螺旋叶片，具有良好的排屑功能，解决了现有自钻式注浆锚杆下向孔施工时排屑困难、卡钻等问题；且大大增加了浆液与锚杆的接触面，提高了锚杆的锚固性能；本实用新型的斜向下设置的锥形注浆孔，实现全锚杆体的压力注浆，解决了现有自钻式注浆锚杆注浆有时不能注满，岩屑堵住注浆管道等问题。
The utility model provides a downward hole self-drilling grouting anchor, which includes a nut, an arched backing plate, a grout stopper and an anchor. The anchor body of the anchor is a hollow tubular structure, and the anchor body The lower end of the drill is provided with an internal thread, which is connected to the drill bit through the internal thread, and the upper part is set with a grout plug, and an arched backing plate and a nut are arranged above the grout plug, and the nut is connected with the external thread on the upper end of the anchor body; the anchor body The central hole of the anchor rod communicates with multiple groups of tapered grouting holes on the anchor rod body. The side of the bolt body of the utility model is provided with compound helical blades with chip removal grooves, which has a good chip removal function and solves the difficulty of chip removal and drill sticking during the construction of the existing self-drilling grouting anchor. problem; and greatly increased the contact surface between the grout and the anchor rod, improving the anchor performance of the anchor rod; the tapered grouting hole arranged obliquely downward in the utility model realizes the pressure grouting of the whole anchor rod body, and solves the problem There are problems such as self-drilling grouting bolt grouting can not be filled sometimes, cuttings block the grouting pipeline and so on.
Description
Technical field
The utility model relates to a kind of lower to the hole Self-propelled grouting anchoring-bolt.
Background technology
Self-propelled grouting anchoring-bolt, is widely used in mine, tunnel surrounding reinforcing and the supporting function integrations such as boring, slip casting and anchorings as a kind of effective anchoring means.Be that take the colliery example, the application of Self-propelled grouting anchoring-bolt have obtained significant social benefit and good economic benefit.But traditional Self-propelled grouting anchoring-bolt is at the weak surrounding rock zone of fracture, and the complex geological conditions such as high-ground stress large deformation carry out down when constructing to the hole, exist chip removal difficulty, bit freezing, slip casting the problem such as can not fill with.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provide a kind of lower can automatic chip-removal when constructing to the hole, and have the lower to the hole Self-propelled grouting anchoring-bolt of efficient slip casting function.
The technical solution adopted in the utility model is: comprise nut, arch backing plate, stop grouting plug and anchor pole, the anchor bar body of described anchor pole is the tubular structure of hollow, the lower end of anchor bar body is provided with internal thread, and be connected with drill bit by internal thread, top is set with stop grouting plug, the stop grouting plug top is provided with arch backing plate and nut, and nut is connected with the anchor bar body upper external screw thread; The centre bore of described anchor bar body is communicated with many groups taper injected hole on the anchor bar body.
Above-mentioned is lower in the Self-propelled grouting anchoring-bolt of hole, is welded with the compound screw blade on the anchor bar body side; The material of compound screw blade is double-deck steel band, and the compound screw blade is provided with chip area.
Above-mentioned is lower in the Self-propelled grouting anchoring-bolt of hole, and described many group taper injected holes are evenly arranged in the anchor bar body, and every group of taper injected hole comprises 2-3 taper injected hole; Distance between two groups of adjacent taper injected holes is 10cm.
Above-mentioned is lower in the Self-propelled grouting anchoring-bolt of hole, and described injected hole and anchor bar body are 30 ° of angles, oblique lower setting.
Above-mentioned is lower in the Self-propelled grouting anchoring-bolt of hole, and the external screw thread on the described anchor bar body and internal thread are through strengthening heat treated parts.
The beneficial effects of the utility model are:
1. the oblique lower setting of taper injected hole of the present utility model, increased grouting pressure, realize the slip casing by pressure of full anchor bar body, solved existing Self-propelled grouting anchoring-bolt slip casting and sometimes can not fill with, landwaste is blocked the problems such as grouting pipe, because injected hole is arranged on the anchor bar body under oblique, under the centrifugal action that High Rotation Speed provides when adding drilling rod work, landwaste is difficult to enter injected hole, has reduced the front operation that needs water and air flushing of common brill bolt grouting, has improved operating efficiency.Simultaneously, because mortar can have been avoided the danger of corrosion of anchor bolt with anchor pole total length parcel, reach the purpose of long-term supporting, further improved the anchoring effect of anchor pole.
2. anchor bar body of the present utility model side is provided with the compound screw blade, and the compound screw blade is provided with chip area, has good chip removal function, the problem such as chip removal difficulty, bit freezing when having solved existing Self-propelled grouting anchoring-bolt and under the operating modes such as weak stratum, coal seam, constructing to the hole.
3. anchor bar body of the present utility model side is provided with the compound screw blade, greatly increased the contact surface of slurries and anchor bar body, improved the anchoring property of anchor pole, simultaneously owing to the utlity model has the automatic chip-removal function, landwaste reduces in the anchor hole, be conducive to the filling of slurries, thereby improved slip casting effect.
4. the external screw thread on the anchor bar body of the present utility model and internal thread have improved the intensity of anchor pole junction through strengthening heat treatment, have solved the problem of common bolt threaded joints partial volume easy fracture.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional drawing among Fig. 1.
Fig. 3 is B-B sectional view among Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, the utility model comprises nut 1, arch backing plate 2, stop grouting plug 3 and anchor pole 4, the anchor bar body 44 of described anchor pole 4 is the tubular structure of hollow, the lower end of anchor bar body 44 is provided with internal thread, and be connected with drill bit 5 by internal thread, anchor bar body 44 tops are set with stop grouting plug 3, and stop grouting plug 3 tops are provided with arch backing plate 2 and nut 1, and nut 1 is connected with anchor bar body 44 upper external screw threads; Described anchor bar body is welded with compound screw blade 43 on 44 sides; The material of described compound screw blade 43 is double-deck steel band, and compound screw blade 43 is provided with chip area.Shown in Fig. 2,3, the centre bore 41 of anchor bar body 44 is communicated with many groups taper injected hole 42 on the anchor bar body 44; Every group of taper injected hole comprises 2 taper injected holes; Distance between two groups of adjacent taper injected holes 42 is 10cm, and taper injected hole 42 is 30 ° of angles, oblique lower setting with anchor bar body 44.Internal thread on the described anchor bar body 44 and external screw thread have improved the intensity of junction anchor pole 4 through strengthening heat treatment, have solved the problem of common bolt threaded joints partial volume easy fracture.
During use, to link to each other with rig again behind anchor bar body of the present utility model 44 upper ends connection drill sleeve, the bit shank, utilize drill hole of drilling machine, during boring, because anchor bar body of the present utility model 44 sides are provided with compound screw blade 43, and compound screw blade 43 is provided with chip area, has good chip removal function, has solved under the operating modes such as existing self drilling anchor weak stratum, coal seam the problem such as chip removal difficulty, bit freezing when constructing to the hole.And injected hole 42 is arranged on the anchor bar body 44 under oblique, under the centrifugal action that High Rotation Speed provides when adding anchor bar body 44 work, landwaste is difficult to enter injected hole 42, can reduce the front operation that needs water and air flushing of common brill anchor pole 4 slip castings, has improved operating efficiency.Hole complete after, unload rig, drill sleeve and bit shank, stop grouting plug 3 is enclosed within anchor bar body 44 outsides, and stop grouting plug 3 filled in the hole that gets out, slurry casting machine is screwed into the external screw thread that exposes skyborne anchor bar body 44 upper ends, and with in the cement injection hole, cement is entered by the endoporus 41 of anchor bar body 44 with compression pump, injected hole 42 by the oblique lower setting on the anchor bar body 44 enters in the hole again, and the air in the hole is discharged by the pore on the stop grouting plug 3.Because injected hole 42 is tapered, oblique lower setting has increased grouting pressure, realizes the slip casing by pressure of full anchor bar body 44, has solved existing Self-propelled grouting anchoring-bolt slip casting and sometimes can not fill with, and landwaste is blocked the problems such as grouting pipe.After slip casting is complete, arch backing plate 2 and nut 1 is installed, and is screwed nut 1.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320285123 CN203248178U (en) | 2013-05-23 | 2013-05-23 | Downward-hole self-drilling grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320285123 CN203248178U (en) | 2013-05-23 | 2013-05-23 | Downward-hole self-drilling grouting anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248178U true CN203248178U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320285123 Expired - Fee Related CN203248178U (en) | 2013-05-23 | 2013-05-23 | Downward-hole self-drilling grouting anchor rod |
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| CN (1) | CN203248178U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194227A (en) * | 2016-08-08 | 2016-12-07 | 何满潮 | Gob side entry retaining control side device and gob side entry retaining control side construction method |
| CN106522846A (en) * | 2016-11-25 | 2017-03-22 | 辽宁虹圆现代农业装备技术开发有限公司 | Energy-saving earth drill bit |
| CN107034880A (en) * | 2017-06-11 | 2017-08-11 | 贵州大学 | A kind of fluking type grouted rock bolt |
| CN107059863A (en) * | 2017-06-11 | 2017-08-18 | 贵州大学 | A kind of prestressed grouting anchor pole with butterfly backing plate |
| CN107059864A (en) * | 2017-06-11 | 2017-08-18 | 贵州大学 | A kind of tubular type prestressed grouting anchor pole |
| CN107893674A (en) * | 2017-12-08 | 2018-04-10 | 吉林大学 | A kind of drilling hollow grouting anchor pole certainly suitable for rock mass large scale structural system |
| CN110593927A (en) * | 2019-09-30 | 2019-12-20 | 宁夏久威矿山安全工程有限责任公司 | Grouting structure with adjustable depth and grouting method |
| CN112502756A (en) * | 2020-11-30 | 2021-03-16 | 辽宁工程技术大学 | Precession type grouting anchor rod structure and using method |
| CN113846614A (en) * | 2021-10-11 | 2021-12-28 | 郑州大学 | A pressure-distributed high-polymer grouting pipe device for testing |
-
2013
- 2013-05-23 CN CN 201320285123 patent/CN203248178U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194227A (en) * | 2016-08-08 | 2016-12-07 | 何满潮 | Gob side entry retaining control side device and gob side entry retaining control side construction method |
| CN106522846A (en) * | 2016-11-25 | 2017-03-22 | 辽宁虹圆现代农业装备技术开发有限公司 | Energy-saving earth drill bit |
| CN107034880A (en) * | 2017-06-11 | 2017-08-11 | 贵州大学 | A kind of fluking type grouted rock bolt |
| CN107059863A (en) * | 2017-06-11 | 2017-08-18 | 贵州大学 | A kind of prestressed grouting anchor pole with butterfly backing plate |
| CN107059864A (en) * | 2017-06-11 | 2017-08-18 | 贵州大学 | A kind of tubular type prestressed grouting anchor pole |
| CN107893674A (en) * | 2017-12-08 | 2018-04-10 | 吉林大学 | A kind of drilling hollow grouting anchor pole certainly suitable for rock mass large scale structural system |
| CN107893674B (en) * | 2017-12-08 | 2023-12-12 | 吉林大学 | A self-drilling hollow grouting anchor suitable for large structural systems in rock mass |
| CN110593927A (en) * | 2019-09-30 | 2019-12-20 | 宁夏久威矿山安全工程有限责任公司 | Grouting structure with adjustable depth and grouting method |
| CN112502756A (en) * | 2020-11-30 | 2021-03-16 | 辽宁工程技术大学 | Precession type grouting anchor rod structure and using method |
| CN113846614A (en) * | 2021-10-11 | 2021-12-28 | 郑州大学 | A pressure-distributed high-polymer grouting pipe device for testing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20150523 |
|
| EXPY | Termination of patent right or utility model |