CN105401882B - A kind of tunnel anchor hole bottom hole Counterboring apparatus - Google Patents
A kind of tunnel anchor hole bottom hole Counterboring apparatus Download PDFInfo
- Publication number
- CN105401882B CN105401882B CN201510978860.7A CN201510978860A CN105401882B CN 105401882 B CN105401882 B CN 105401882B CN 201510978860 A CN201510978860 A CN 201510978860A CN 105401882 B CN105401882 B CN 105401882B
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- China
- Prior art keywords
- blade
- drilling tool
- rotating blade
- push rod
- rotating
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- 238000005553 drilling Methods 0.000 claims abstract description 71
- 239000011435 rock Substances 0.000 claims abstract description 19
- 239000002689 soil Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 12
- 239000000725 suspension Substances 0.000 abstract description 7
- 239000003245 coal Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to coal mine support fields, disclose a kind of tunnel anchor hole bottom hole Counterboring apparatus, including：Support link（3）, rotating blade（5）, blade connecting spring pin（6）, push rod（7）, blade support set（8）With drilling tool handle（10）It forms, the push rod（7）First end be provided with multiple rotating blades（5）, one end of the rotating blade（5）Pass through support link（3）With push rod（7）It is connected, the other end passes through blade support set（8）With positioned at support link（3）Second end drilling tool handle（10）It is connected；The drilling tool handle（10）The push rod is pushed under external force（7）It is mobile, to give the rotating blade（5）Apply external force so that the rotating blade（5）Expand radius of turn outward.The present invention improves the cohesive force of tunnel Anchor Agent and the country rock that drills, and increases anchor system stability, is of great significance to control suspension roof support class tunnel wall caving, roof fall accident.
Description
Technical field
The invention belongs to coal mine support fields, are related to a kind of tunnel anchor hole bottom hole Counterboring apparatus.
Background technology
In recent years, bolt support technology becomes coal mine roadway branch because its low cost, due to construction technology is simple, speed of application is fast
One of main support form of shield, plays an important role to underworkings stability, is a leather of China's coal-mine roadway support
Life.Suspension roof support is by the front end of anchor pole（Anchor head）It is anchored on rock mass stability, on the one hand in body of rod tail portion（Anchor tail）Pass through
The collective effect of anchor rod pallet board and pre-load nut applies axial pre tightening force to the body of rod, so as to which roadway surrounding rock be inhibited axially to become along the body of rod
Shape prevents surrounding rock separation layer；Another aspect body of rod self-strength is resisted rock stratum in the range of anchoring and generated to be become along the sliding changing of the relative positions of plane of weakness
Shape.
In existing bolt support technology construction, the installation anchoring procedure of anchor pole is generally：It uses first straight with anchor rod body
" drill bit-drilling rod-drilling machine " device that diameter matches, sets the unified anchor hole of diameter on the country rock at rockbolt installation position,
The Anchor Agent of certain specification is put into anchor hole to bottom hole, anchor pole is pushed into anchor hole, drives anchor pole rotation straight with drilling machine
It is stirred evenly to Anchor Agent, after Anchor Agent curing, " hole wall country rock-anchor is finally formed in the range of anchor hole bottom hole certain length
Gu this anchor rod anchored system of the agent-body of rod ".
Anchoring bore dia using common process construction is unified, no reducing feature, when anchor pole bears axial tension, anchor pole with
Bonding between Anchor Agent is more close, but the shear stress along anchor hole axial direction is formed between Anchor Agent and anchor hole, bonds
When the shear stress provided at face is enough to overcome anchor pole axial tension stress, it just can guarantee anchor pole always in effective support work shape
State.But since the roadway surrounding rock in the range of certain depth is by different degrees of driving, mining influence, lead to this range
Interior coal and rock integrality is poor, relatively soft, broken, and bearing capacity reduces significantly.Therefore, such roadway surrounding rock uses common process
When carrying out suspension roof support, the pore wall strength of anchor hole is insufficient, and the adhesive surface between Anchor Agent and hole wall is easily acted in shear stress
It is lower to destroy, " anchor pole-Anchor Agent " is made to be detached from from cohesive country rock hole wall, leads to fastening invalidation, is emitted so as to which tunnel occur
The safety accidents such as top, wall caving.
Invention content
In order to solve in existing anchorage technology to lead to the bonding between Anchor Agent and hole wall because of anchor hole pore wall strength deficiency
Face is destroyed, and ultimately causes the problem of anchor system fails, and the present invention provides a kind of tunnel anchor hole bottom hole Counterboring apparatus.
The technical solution adopted by the present invention is：A kind of tunnel anchor hole bottom hole Counterboring apparatus, including：Drilling tool top cap, cylinder
Pin, support link, rod spring pin, rotating blade, blade connecting spring pin, push rod, blade support set, spring, drilling tool handle and
Bayonet lock, the first end of the push rod are provided with multiple rotating blades, and one end of the rotating blade passes through support link and push rod
It is connected, the drilling tool pushing the push rod to move under external force, the rotating blade to be given to apply external force so that institute
It states rotating blade and expands radius of turn outward；The other end of the rotating blade passes through blade connecting spring pin and blade support set
It is connected, the support link is connected by straight pin with rotating blade, passes through connecting rod between the support link and push rod
Spring catch is connected, and the other end of the push rod is connected with blade support set, and the blade support set is connected with drilling tool handle,
The bayonet lock is arranged on the drilling tool upper, and drilling machine is driven for connecting；
The spring is arranged on blade support set and drilling tool between, in off working state by blade support
Set and drilling tool handle strut,
In working condition, the rotating blade, push rod, blade support set and drilling tool are the phase under the driving of driving drilling machine
Drilling tool top cap is rotated.
Preferably, the drilling tool handle and blade support set external cylindrical surface are equipped with helicla flute, convenient for rotating blade is cut
Ground conveyed.
Preferably, the rotating blade is equipped with lance tooth, and there is chamfering in the front end of rotating blade.
Preferably, the flank of tooth camber of the rotating blade.
Preferably, the rotating blade and horizontal sextant angle are 0-45 °.
The advantages of the present invention are：The present invention can reduce anchor pole of constructing in the poor country rock of integrality,
Lead to the probability of fastening invalidation due to the cohesive force between Anchor Agent and drilling country rock is insufficient, increase is soft, broken, integrality is poor
Country rock in Bolt System stability, there is great meaning to the generation of control suspension roof support class tunnel wall caving, roof fall accident
Justice.In addition, in coal industry stagnant today, there is this technology that can improve single anchor rod anchoring range, reduce and arrange between anchor pole
Away from so as to improve suspension roof support class roadway construction speed, reduce support cost.
Description of the drawings
Fig. 1 is principle of the invention structure diagram；
Fig. 2 is the structure diagram of drilling tool handle of the present invention；
Fig. 3 is pusher structure schematic diagram of the present invention；
Fig. 4 is rotating blade structure diagram of the present invention；
Fig. 5 is rotating blade side view of the present invention；
Structure diagram when Fig. 6 is overall work state of the present invention；
Structure diagram when Fig. 7 is present invention entirety off working state.
1st, drilling tool top cap；2nd, straight pin；3rd, support link；4th, rod spring pin；5th, rotating blade；6th, blade connection bullet
Spring pin；7th, push rod；8th, blade support set；9th, spring；10th, drilling tool handle；11st, bayonet lock.
Specific embodiment
The specific embodiment of the present invention is further described with reference to the accompanying drawings and examples, following embodiment is only used
In clearly illustrating technical scheme of the present invention, and it is not intended to limit the protection scope of the present invention and limits the scope of the invention.
As shown in figs. 1-7, it is the structure diagram of an embodiment of the present invention, anchor hole bottom hole Counterboring apparatus of the invention
Including：Drilling tool top cap 1, straight pin 2, support link 3, rod spring pin 4, rotating blade 5, blade connecting spring pin 6, push rod 7,
10 and bayonet lock 11, the first end of the push rod 7 is provided with multiple rotating blades 5, described for blade support set 8, spring 9, drilling tool
One end of rotating blade 5 is connected by support link 3 with push rod 7, the drilling tool 10 under external force push described in push away
Bar 7 moves, the rotating blade 5 to be given to apply external force so that the rotating blade 5 expands radius of turn outward；The rotation
The other end of blade 5 is connected by blade connecting spring pin 6 with blade support set 8, and the support link 3 passes through straight pin 2
Be connected with rotating blade 5, be connected between the support link 3 and push rod 7 by rod spring pin 4, the push rod 7 it is another
One end is connected with blade support set 8, and the blade support set 8 is connected with drilling tool 10, and the bayonet lock 11 is arranged on described
Drilling tool drives drilling machine on 10 for connecting；
The spring 9 is arranged on blade support set 8 and drilling tool between 10, in off working state by blade
Supporting sleeve 8 and drilling tool are strutted 10,
In working condition, the rotating blade 5, push rod 7, blade support set 8 and drilling tool are 10 in the drive for driving drilling machine
It is rotated under dynamic relative to drilling tool top cap 1.In working condition, drilling tool top cap 1 is contacted with palisades fixation, and driving drilling machine drives this dress
It puts and is rotated relative to drilling tool top cap 1, increase device lifetime, improve working efficiency.
The cohesive force that the present invention improves Anchor Agent between the country rock that drills, increases anchor system stability, to controlling anchor pole branch
Shield class tunnel wall caving, roof fall accident are of great significance.In coal industry stagnant today, there is this technology that can carry
High single anchor rod anchors range, reduces bolt interval, so as to improve suspension roof support class roadway construction speed, reduce supporting into
This.
The flank of tooth camber of the rotating blade 5 of the present invention, can reduce resistance, can increase the longevity of blade when being contacted with ground
Life.
Preferably, the rotating blade 5 and horizontal sextant angle are 0-45 °.Preferably, the rotating blade 5 is equipped with triangle
Shape tooth, convenient for cutting ground, there is larger chamfering in the front end of rotating blade 5, and prebored hole is preferably entered when working convenient for the present apparatus.
10 and blade support are covered 8 external cylindrical surfaces equipped with helicla flute by the drilling tool of the present invention, convenient for by the rock of blade cut
Outside native sprocket hole；10 front ends are equipped with threaded hole 101 by drilling tool, and rear end is equipped with pin hole 103；Drilling tool passes through screw thread 10 with push rod 7
Connection, drilling tool are rectangular the end of 10 front end and blade support set 8, and drilling tool is mounted on 10 front end and blade support set
In 8,8 linear motions can be covered along blade support.The end of rotating blade 5 passes through 8 hinge of blade connecting spring pin 6 and blade support set
It connects；One end of support link 3 is hinged by straight pin 2 and the front end of rotating blade 5, and the other end is by rod spring pin 4 with pushing away
7 front end of bar is hinged；One end of spring 9 is connect with blade support set 8, and the other end is connect with drilling tool 10, for off working state
When by blade support set 8 and drilling tool strutted 10.Rotating blade 5 is equipped with lance tooth, convenient for cutting ground.Rotating blade 5
Front end have larger chamfering, for the present apparatus when entering prebored hole, ground can give blade downward power, and blade is not easy to be stuck
Or open, the flank of tooth camber of rotating blade 5, the service life of blade can be increased, bayonet lock 11 is mounted on drilling tool 10 end, is used for
It is connect with the rotary drilling-head of transmission.The front end of blade support set is equipped with drilling tool top cap 1, and drilling tool top cap 1 can with blade support set 8
It rotates in a circumferential direction.
As shown in Fig. 2, the structure diagram for drilling tool handle of the present invention, 10 front end is equipped with threaded hole by drilling tool of the invention
101, ontology is equipped with helicla flute 102, pin hole 103 is equipped in rear end, for installing push rod 7, helicla flute 102 is convenient for for end 101
By outside the ground sprocket hole of blade cut, pin hole 103 is used to install bayonet lock 11.
As shown in figure 3, for pusher structure schematic diagram of the present invention, push rod of the invention includes blade bearing 71, square bar 72, screw thread
Axis 73, for blade bearing 71 for installing rotating blade 5,72 section of square bar is square, convenient for covering the rotation of 8 inner holes with blade support
Turn, thread spindle 73 is mounted on cutter in the threaded hole 101 of 10 front ends.
As shown in Figure 4,5, it is rotating blade structure diagram of the present invention, rotating blade of the invention includes chamfering 51, three
Angular teeth 52, arc-shaped tooth 53, the flank of tooth camber of rotating blade 5, can reduce resistance when being contacted with ground, can increase blade
Service life, the rotating blade and horizontal sextant angle are 0-45 °.
The course of work of the present invention is as follows：
First, using " drill bit-drilling rod-drilling machine " device to match with anchor rod body diameter, Anchor Agent diameter in tunnel
Traditional anchor hole of suspension roof support demand depth is drilled out in country rock；Secondly, drilling rod is taken out, dismantles drill bit, the expansion for the present invention that changes the outfit
Traditional anchor hole is sent into after aperture apparatus to bottom hole, at this point, Counterboring apparatus head top cap is contacted with traditional anchor hole bottom hole country rock；The
Three, start drilling machine, operate drilling machine and push drilling machine that drilling rod is driven to be moved axially along traditional anchor hole, in the rotary lifting of drilling rod
Effect reaming device cutting tip is softened, and from outside to bottom hole cutting drilling country rock in the range of reaming, reaches anchor hole
Bottom outlet reaming purpose；Finally, after the completion of reaming, drilling machine stops operating, and extracts Counterboring apparatus outward, and drilling tool is can then pull push rod
Outward movment, at this point, rotating blade is by the pressure of smaller initial hole section and the elastic force collective effect of spring, meanwhile, push rod with
Blade support set distance increase so that rotating blade is along blade connecting spring pin rotating shrinking, until rotating blade is fully retracted into
In the insert groove of blade support set, drill bit resets, and reaming bit is extracted from drilling, and a reaming cycle is completed.
The above is only the preferred embodiments of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of tunnel anchor hole bottom hole Counterboring apparatus, which is characterized in that including：Drilling tool top cap (1), straight pin (2), support connect
Bar (3), rod spring pin (4), rotating blade (5), blade connecting spring pin (6), push rod (7), blade support set (8), spring
(9), (10) and bayonet lock (11), the first end of the push rod (7) are provided with multiple rotating blades (5), the rotating knife by drilling tool
One end of piece (5) is connected by support link (3) with push rod (7), and the drilling tool is described in (10) under external force promotion
Push rod (7) is mobile, the rotating blade (5) to be given to apply external force so that the rotating blade (5) expands radius of turn outward；
The other end of the rotating blade (5) is connected by blade connecting spring pin (6) with blade support set (8), and the support connects
Bar (3) is connected by straight pin (2) with rotating blade (5), passes through connecting rod bullet between the support link (3) and push rod (7)
Spring pin (4) is connected, and the other end of the push rod (7) is connected with blade support set (8), and the blade support set (8) is with boring
Tool is connected (10), and the bayonet lock (11) is arranged on the drilling tool on (10), and drilling machine is driven for connecting；
The spring (9) is arranged on the blade support set (8) and drilling tool between (10), in off working state by knife
Piece supporting sleeve (8) and drilling tool strut (10),
In working condition, the rotating blade (5), push rod (7), blade support set (8) and drilling tool are (10) in driving drilling machine
Driving under relative to drilling tool top cap (1) rotate；
(10) and blade support set (8) external cylindrical surface is equipped with helicla flute by the drilling tool, convenient for the rock for cutting rotating blade
Soil is conveyed；The rotating blade (5) is equipped with lance tooth, and there is chamfering in the front end of rotating blade；The rotating blade (5)
Flank of tooth camber；The rotating blade (5) is 0-45 ° with horizontal sextant angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510978860.7A CN105401882B (en) | 2015-12-24 | 2015-12-24 | A kind of tunnel anchor hole bottom hole Counterboring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510978860.7A CN105401882B (en) | 2015-12-24 | 2015-12-24 | A kind of tunnel anchor hole bottom hole Counterboring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105401882A CN105401882A (en) | 2016-03-16 |
| CN105401882B true CN105401882B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510978860.7A Expired - Fee Related CN105401882B (en) | 2015-12-24 | 2015-12-24 | A kind of tunnel anchor hole bottom hole Counterboring apparatus |
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| CN (1) | CN105401882B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105952380B (en) * | 2016-06-17 | 2018-06-29 | 四川众基精锚工程技术有限公司 | A kind of mould broaching equipment and its expanding method |
| CN107034879B (en) * | 2017-05-07 | 2018-09-07 | 周庆川 | The anchor pole of Telescopic strut for construction structure |
| CN106968604B (en) | 2017-05-27 | 2018-11-23 | 河南理工大学 | Reamer inside mine anchor rod hole |
| CN108756759A (en) * | 2018-07-16 | 2018-11-06 | 中铁四院集团西南勘察设计有限公司 | A kind of bottom expanding drill |
| CN110847825B (en) * | 2019-10-31 | 2021-02-26 | 山东科技大学 | Advancing type full-automatic controllable reducing pressure relief connecting rod drill bit device and using method thereof |
| CN111648736B (en) * | 2020-06-03 | 2023-05-12 | 中国石油化工股份有限公司 | Reducing mill shoe for well repair and tubular column assembly using same |
| CN111457159B (en) * | 2020-06-22 | 2020-09-15 | 浙江万华建设有限公司 | Jacking pipe jacking equipment |
| CN113958327B (en) * | 2021-10-20 | 2024-03-29 | 中铁六局集团有限公司 | Construction device and construction method for shield tunneling machine underground diaphragm wall |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829445B2 (en) * | 1986-12-16 | 1996-03-27 | 株式会社ミヤナガ | Upward expansion hole drilling device |
| CN1851147A (en) * | 2005-04-22 | 2006-10-25 | 上海电力设计院有限公司 | Anti-pull pile for underground converting station and its use for underground converting station engineering |
| CN202031482U (en) * | 2011-05-13 | 2011-11-09 | 乔国华 | Square piston type anchoring and chambering drilling rig |
| CN205206743U (en) * | 2015-12-24 | 2016-05-04 | 张伟光 | Tunnel anchorage holes hole bottom reaming device |
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- 2015-12-24 CN CN201510978860.7A patent/CN105401882B/en not_active Expired - Fee Related
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| CN105401882A (en) | 2016-03-16 |
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180511 Address after: 830091 Xinjiang Institute of engineering, 1350 Jinqiao Road, Toutun River District, Urumqi, the Xinjiang Uygur Autonomous Region Applicant after: Xinjiang Institute of Engineering Address before: 830052 Xinjiang road engineering college, 236 Nanchang Road, Sha Sha, Urumqi, the Xinjiang Uygur Autonomous Region Applicant before: Zhang Weiguang |
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Granted publication date: 20180615 Termination date: 20201224 |