CN106958419A - Mine anchor rod hole screw drive formula reaming drilling rod - Google Patents
Mine anchor rod hole screw drive formula reaming drilling rod Download PDFInfo
- Publication number
- CN106958419A CN106958419A CN201710389335.0A CN201710389335A CN106958419A CN 106958419 A CN106958419 A CN 106958419A CN 201710389335 A CN201710389335 A CN 201710389335A CN 106958419 A CN106958419 A CN 106958419A
- Authority
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- China
- Prior art keywords
- reaming
- sleeve pipe
- push
- pull
- reaming blade
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 11
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000725 suspension Substances 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
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/325—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being shifted by a spring mechanism
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Mine anchor rod hole screw drive formula reaming drilling rod, including broad, sleeve pipe, pull bar, rig connecting shaft and push-and-pull drive sleeve, pull bar is coaxial to be arranged in sleeve pipe, broad rear end is connected to pull bar front end, two elongated holes are offered on front side of sleeve pipe, sleeve pipe front end is provided with top pressure structure, push-and-pull drive sleeve is coaxial to be stretched into and is threaded in riffled tube, the rear end of push-and-pull drive sleeve is provided with handle, push-and-pull rod rear end with rig connecting shaft front end is coaxial is fixedly connected, rig connecting shaft excircle is provided with external thread structure；The driving guide block for being provided with riffled tube and coordinating with push-and-pull drive sleeve front end top pressure on pull bar.The present invention is simple to operate, and cost is relatively low, and reaming performance is stable, and cutter can actively open and effectively reclaim.The anchor pole Problem of Failure that the sliding unstability between anchor pole and hole wall is caused is can effectively solve the problem that, mine safety situation can be improved, shaft production efficiency is improved.
Description
Technical field
The invention belongs to Roadway Support Technology field, more particularly to mine anchor rod hole screw drive formula reaming drilling rod.
Background technology
The features such as anchor pole has simple in construction, easy construction, strong adaptability for underworkings supporting.Thus anchor in recent years
Bar supporting has become the major way of roadway support, but the failure mode of anchor pole is main in the engineer applied of suspension roof support
It is when running into the coal ash adhered on hole wall or broken soft country rock etc. in Bracing Process in anchoring procedure between anchor pole and hole wall
Sliding unstability.
In view of anchor pole slides destabilization problems, some scholars attempt to solve problems using bolthole reaming mode, but
Existing reaming equipment is generally that tool parts passively open cutting rock and cause reaming poor performance, and it is unstable to there is institute's reaming,
The problems such as cutter reclaims difficult.It is therefore proposed that a kind of easy to use, the stable reaming drilling rod of reaming performance turns into a new direction.
The content of the invention
There is provided a kind of mine anchor rod hole screw drive formula reamer in order to solve weak point of the prior art by the present invention
Bar, it is realized using mechanical whorl transmission principle carries out reaming by bolthole hole wall or bottom hole and makes institute's reaming in turbination
Device, it is possible to achieve the active of cutter is stretched out with reclaiming.It can realize during the anchoring support of tunnel to anchor-holding force of anchor bolt
Improve, so as to improve anchor rod anchored property, overcome anchor pole to slide unstable phenomenon, finally realize the efficient supporting of mine safety, improve
Mine safety production level.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：Mine anchor rod hole screw drive formula reamer
Bar, including broad, sleeve pipe, pull bar, rig connecting shaft and push-and-pull drive sleeve, pull bar is coaxial to be arranged on sleeve pipe
Interior, it is assumed that sleeve pipe and pull bar are horizontally disposed with along the longitudinal direction, broad rear end is connected on front side of pull bar front end, sleeve pipe
Central Symmetry offers two elongated holes opened up along sleeve pipe axial direction, and sleeve pipe front end is provided with for driving broad to stretch
Go out the top pressure structure that elongated hole is radially expanded, sleeve pipe rear end is coaxial to be fixedly connected with the riffled tube that internal diameter is more than sleeve pipe, push-and-pull
Drive sleeve is coaxial to be stretched into and is threaded in riffled tube, and the rear end of push-and-pull drive sleeve is provided with handle, pull bar
Rear end sequentially pass through after riffled tube and push-and-pull drive sleeve with rig connecting shaft front end is coaxial is fixedly connected, rig connecting shaft
Excircle is provided with external thread structure；It is provided with riffled tube and matches somebody with somebody with push-and-pull drive sleeve front end top pressure on pull bar
The driving guide block of conjunction, the Maximum turning radius of driving guide block is more than the internal diameter of push-and-pull drive sleeve and is less than the interior of riffled tube
Footpath, internal surface of sleeve pipe is fixedly installed at least two guide pin bushings being set in outside pull bar, the external diameter of pull bar and the internal diameter of guide pin bushing
It is equal.
Top pressure structure includes baffle plate and addendum cone, and baffle plate is fixedly installed on the front end of sleeve pipe, addendum cone rearward end and baffle plate front side
Face is fixedly connected, and broad includes the first reaming blade and the second cornish bit for radially corresponding to an elongated hole respectively
The rear end of piece, the first reaming blade and the second reaming blade is by hinge in pull bar front end, and addendum cone is in preceding thick metacone
Pyramidal structure, the first reaming blade and the second reaming blade constitute scissors shape, addendum cone rear portion extend into the first reaming blade and
Between second reaming blade, torsion spring is arranged with bearing pin, two spring arms difference top pressure the first reaming blade of torsion spring and second are expanded
Hole blade, in the presence of torsion spring, addendum cone respectively with the first reaming blade and the second reaming blade press fit, the first cornish bit
The outside of piece and the second reaming blade is provided with stair-stepping diamond cutter tooth, the first reaming blade and second along its length
The width adaptation of the equal elongated hole of thickness of reaming blade.
One of guide pin bushing is arranged on rear side of elongated hole, and another guide pin bushing is arranged on front side of riffled tube.
Replaceable axle sleeve is provided between push-and-pull drive sleeve inwall and pull bar outer wall.
Using above-mentioned technical proposal, the present invention operationally, first the dynamic of the rig connecting shaft in the present invention and rig
Power output shaft is threadedly coupled.Then sleeve pipe is pushed into the bolthole accomplished fluently in advance, stirs handle rotation, drive push-and-pull actuating sleeve
Cylinder rotates and moved forward along riffled tube, and push-and-pull drive sleeve promotes driving guide block to march forward, and driving guide block drives pull bar
Reach, the first reaming blade and the second reaming blade that pull bar front end is hinged is moved forward, because sleeve pipe is motionless, with first
Reaming blade and the second reaming blade are moved forward, and the addendum cone of sleeve pipe front end opens the first reaming blade and the second reaming blade top
And stretch out two elongated holes stretchings, the first reaming blade and the second reaming blade incision rock stratum.Then rig is started, is connected by rig
Spindle rotates at a high speed, and rig connecting shaft drives pull bar rotation, the first reaming blade and the second reaming blade on pull bar with
Rotation and drive sleeve rotating, the diamond cutter tooth on the first reaming blade and the second reaming blade expands foot of hole to one
Individual conical tank.In addition, in the case of really up to the mark in rock stratum, can first by pull bar be pressed onto resistance it is larger when just start rig reaming, so
After stop rig, being then rotated further by handle makes the first reaming blade and the second reaming blade continue to open, repeat this process two arrive
Three i.e. achievable reamings.Finally stop rig, opposite direction rotates handle, the first reaming blade and the second reaming blade are being turned round
It is retracted into the presence of spring along elongated hole in sleeve pipe, the work of ream operation can be completed by finally extracting sleeve pipe.
Torsion spring in the present invention plays a part of resetting the first reaming blade and the second reaming blade in sleeve pipe.Guide pin bushing and
Axle sleeve, which is played, is oriented to the movable effect of pull bar.Guide block wherein on rear side of elongated hole is played stops coal petrography in reaming procedure
The effect that chip is entered in sleeve pipe.
The Maximum turning radius of guide block is driven to be more than the internal diameter of push-and-pull drive sleeve and be less than the internal diameter of riffled tube, so
The position of forward movement can be limited, i.e., when driving guide block with end in contact after sleeve pipe, cannot be moved further along.
In summary, the present invention is provided a kind of realized using mechanical whorl transmission principle and carries out bolthole hole wall or bottom hole
The drilling rod of reaming, the present invention is simple to operate, and cost is relatively low, and reaming performance is stable, and cutter can actively open and effectively reclaim.Energy
It is enough effectively to solve the anchor pole Problem of Failure that the sliding unstability between anchor pole and hole wall is caused, mine safety situation can be improved, carried
High shaft production efficiency, realizes that safety and high efficiency is significant with supporting to mine.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the state diagram before bolthole reaming；
Fig. 3 is the state diagram after bolthole reaming；
Fig. 4 is state diagram after being anchored after reaming.
Embodiment
As shown in Figure 1-Figure 3, mine anchor rod hole screw drive formula reaming drilling rod of the invention, including broad, sleeve pipe
1st, pull bar 2, rig connecting shaft 3 and push-and-pull drive sleeve 4, pull bar 2 is coaxial to be arranged in sleeve pipe 1, it is assumed that sleeve pipe 1 and pushed away
Pull bar 2 is horizontally disposed with along the longitudinal direction, and broad rear end is connected to the front end of pull bar 2, and the front side Central Symmetry of sleeve pipe 1 is opened up
There are two elongated holes 5 opened up along the axial direction of sleeve pipe 1, the front end of sleeve pipe 1 is provided with for driving broad to stretch out the footpath of elongated hole 5
To the top pressure structure opened, the rear end of sleeve pipe 1 is coaxial to be fixedly connected with the riffled tube 6 that internal diameter is more than sleeve pipe 1, push-and-pull actuating sleeve
Cylinder 4 is coaxial to be stretched into and is threaded in riffled tube 6, and the rear end of push-and-pull drive sleeve 4 is provided with after handle 7, pull bar 2
End sequentially pass through after riffled tube 6 and push-and-pull drive sleeve 4 with the front end of rig connecting shaft 3 is coaxial is fixedly connected, rig connection
The excircle of axle 3 is provided with external thread structure；Be provided with pull bar 2 in the riffled tube 6 and with the front end of push-and-pull drive sleeve 4
The driving guide block 8 that top pressure coordinates, the Maximum turning radius of driving guide block 8 is more than the internal diameter of push-and-pull drive sleeve 4 and less than interior spiral shell
The internal diameter of line pipe 6, the inwall of sleeve pipe 1 is fixedly installed at least two guide pin bushings 9 being set in outside pull bar 2, the external diameter of pull bar 2
It is equal with the internal diameter of guide pin bushing 9.
Top pressure structure includes baffle plate 10 and addendum cone 11, and baffle plate 10 is fixedly installed on the front end of sleeve pipe 1, the rearward end of addendum cone 11 with
The leading flank of baffle plate 10 is fixedly connected, and broad includes the first reaming blade for radially corresponding to an elongated hole 5 respectively
12 and the second reaming blade 13, the rear end of the first reaming blade 12 and the second reaming blade 13 is hinged on pull bar by bearing pin 14
2 front ends, the pyramidal structure of the thick metacone before of addendum cone 11, the first reaming blade 12 and the second reaming blade 13 constitute scissors shape,
The rear portion of addendum cone 11 is extend between the first reaming blade 12 and the second reaming blade 13, and torsion spring 15, torsion spring are arranged with bearing pin 14
15 two spring arms difference the first reaming of top pressure blade 12 and the second reaming blade 13, in the presence of torsion spring 15,11 points of addendum cone
Not with the first reaming blade 12 and the press fit of the second reaming blade 13, the first reaming blade 12 and the second reaming blade 13 it is outer
Side is provided with the thickness of stair-stepping diamond cutter tooth 16, the first reaming blade 12 and the second reaming blade 13 along its length
The width adaptation of equal elongated hole 5.
One of guide pin bushing 9 is arranged on the rear side of elongated hole 5, and another guide pin bushing 9 is arranged on the front side of riffled tube 6.
Replaceable axle sleeve 17 is provided between the inwall of push-and-pull drive sleeve 4 and the outer wall of pull bar 2.
The present invention operationally, is threadedly coupled the rig connecting shaft 3 in the present invention with the power output shaft of rig first.
Then sleeve pipe 1 is pushed into the bolthole 18 accomplished fluently in advance, stirs handle 7 and rotate, drive push-and-pull drive sleeve 4 to rotate and along interior
Screwed pipe 6 is moved forward, and push-and-pull drive sleeve 4 promotes driving guide block 8 to march forward, and driving guide block 8 drives pull bar 2 to move forward, and pushes away
The the first reaming blade 12 and the second reaming blade 13 that the front end of pull bar 2 is hinged are moved forward, because sleeve pipe 1 is motionless, with first
The reaming blade 13 of reaming blade 12 and second is moved forward, and the addendum cone 11 of the front end of sleeve pipe 1 expands the first reaming blade 12 and second
The top of hole blade 13, which is opened and stretches out two elongated holes 5, to be stretched out, the first reaming blade 12 and the second reaming blade 13 incision rock stratum.Then open
Dynamic rig, is rotated at a high speed by rig connecting shaft 3, and rig connecting shaft 3 drives pull bar 2 to rotate, the first reaming on pull bar 2
The reaming blade 13 of blade 12 and second rotates with and drives sleeve pipe 1 to rotate, the first reaming blade 12 and the second reaming blade 13
On diamond cutter tooth 16 foot of hole is expanded to a conical tank 19.In addition, in the case of really up to the mark in rock stratum, can be first by push-and-pull
Bar 2 be pressed onto resistance it is larger when just start rig reaming, then stop rig, being then rotated further by handle 7 makes the first reaming blade 12
Continue to open with the second reaming blade 13, repetition two to three i.e. achievable reamings of this process.Finally stop rig, opposite direction turns
Fixed handle 7, the first reaming blade 12 and the second reaming blade 13 are retracted into sleeve pipe 1 in the presence of torsion spring 15 along elongated hole 5,
The work of ream operation can be completed by finally extracting sleeve pipe 1.
When carrying out anchoring operation, anchor pole 20 is inserted into bolthole 18, injection Anchor Agent 21, reaming in bolthole 18
Also it is full of afterwards in conical tank 19 by Anchor Agent 21, the anchoring status such as Fig. 4 is finally realized by Stirring Anchor Agent 21.Anchor
Reinforce rearward, upper padding plate 22 is covered on anchor pole 20 and is threaded in using nut 23 on anchor pole 20 backing plate 22 is pressed onto tunnel
On wall.Thus make between anchor pole 20 and the inwall of bolthole 18 with reference to even closer firm, it is to avoid the activity of anchor pole 20 is even taken out
Go out outside bolthole 18, the Problem of Failure of anchor pole 20 caused.
The present embodiment not makees any formal limitation to shape, material, structure of the present invention etc., every according to this hair
Any simple modification, equivalent variations and modification that bright technical spirit is made to above example, belong to the technology of the present invention side
The protection domain of case.
Claims (4)
1. mine anchor rod hole screw drive formula reaming drilling rod, it is characterised in that：Connect including broad, sleeve pipe, pull bar, rig
Spindle and push-and-pull drive sleeve, pull bar is coaxial to be arranged in sleeve pipe, it is assumed that sleeve pipe and pull bar level along the longitudinal direction
Set, broad rear end is connected to Central Symmetry on front side of pull bar front end, sleeve pipe and offers two along sleeve pipe axial direction
The elongated hole opened up, sleeve pipe front end is provided with for driving broad to stretch out the top pressure structure that elongated hole is radially expanded, sleeve pipe rear end
Coaxial to be fixedly connected with the riffled tube that internal diameter is more than sleeve pipe, push-and-pull drive sleeve is coaxial to be stretched into and is threadedly coupled in interior spiral shell
In line pipe, the rear end of push-and-pull drive sleeve is provided with handle, and push-and-pull rod rear end sequentially passes through riffled tube and push-and-pull drive sleeve
Afterwards with rig connecting shaft front end is coaxial is fixedly connected, rig connecting shaft excircle is provided with external thread structure；Set on pull bar
The driving guide block for being equipped with riffled tube and coordinating with push-and-pull drive sleeve front end top pressure, the maximum revolution half of driving guide block
Footpath is more than the internal diameter of push-and-pull drive sleeve and less than the internal diameter of riffled tube, and internal surface of sleeve pipe is fixedly installed at least two and is arranged
Guide pin bushing outside pull bar, the external diameter of pull bar is equal with the internal diameter of guide pin bushing.
2. screw drive formula reaming drilling rod in mine anchor rod hole according to claim 1, it is characterised in that：Top pressure structure includes
Baffle plate and addendum cone, baffle plate are fixedly installed on the front end of sleeve pipe, and addendum cone rearward end is fixedly connected with baffle plate leading flank, broad bag
Include the first reaming blade and the second reaming blade for radially corresponding to an elongated hole respectively, the first reaming blade and second
The rear end of reaming blade is by hinge in pull bar front end, and addendum cone is in the pyramidal structure of preceding thick metacone, the first reaming blade
Scissors shape is constituted with the second reaming blade, addendum cone rear portion is extend between the first reaming blade and the second reaming blade, bearing pin
On be arranged with torsion spring, two spring arms difference top pressure the first reaming blade of torsion spring and the second reaming blade, in the presence of torsion spring,
Addendum cone respectively with the first reaming blade and the second reaming blade press fit, the outside of the first reaming blade and the second reaming blade
It is provided with stair-stepping diamond cutter tooth along its length, the equal elongated hole of thickness of the first reaming blade and the second reaming blade
Width is adapted to.
3. screw drive formula reaming drilling rod in mine anchor rod hole according to claim 1, it is characterised in that：One of guide pin bushing
It is arranged on rear side of elongated hole, another guide pin bushing is arranged on front side of riffled tube.
4. screw drive formula reaming drilling rod in mine anchor rod hole according to claim 1, it is characterised in that：Push-and-pull drive sleeve
Replaceable axle sleeve is provided between inwall and pull bar outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389335.0A CN106958419B (en) | 2017-05-27 | 2017-05-27 | Mine anchor rod hole screw drive formula reaming drilling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389335.0A CN106958419B (en) | 2017-05-27 | 2017-05-27 | Mine anchor rod hole screw drive formula reaming drilling rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106958419A true CN106958419A (en) | 2017-07-18 |
| CN106958419B CN106958419B (en) | 2018-08-17 |
Family
ID=59482870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389335.0A Active CN106958419B (en) | 2017-05-27 | 2017-05-27 | Mine anchor rod hole screw drive formula reaming drilling rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106958419B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518192A (en) * | 2018-06-15 | 2018-09-11 | 焦作市恒利水文地质工程有限责任公司 | A kind of cannula cavity cuts milling device |
| WO2018218900A1 (en) * | 2017-05-27 | 2018-12-06 | 河南理工大学 | Anchor-bolt hole interior reamer used for mining |
| CN109184567A (en) * | 2018-11-19 | 2019-01-11 | 河南理工大学 | A kind of anchor hole multistage countersinking device and control method |
| CN109702248A (en) * | 2019-03-04 | 2019-05-03 | 李吴军 | A kind of reaming bit of workpiece blind hole |
| CN111456639A (en) * | 2020-04-30 | 2020-07-28 | 山东建筑大学 | Adjustable soil body enlarged head anchor rod drill bit and using method thereof |
| CN113006846A (en) * | 2021-03-24 | 2021-06-22 | 江苏麦廊新材料科技有限公司 | Recyclable anchor rod device and using method thereof |
| CN114892672A (en) * | 2022-05-10 | 2022-08-12 | 北京市机械施工集团有限公司 | Foundation pit support construction process method |
| CN116607553A (en) * | 2023-06-27 | 2023-08-18 | 中国科学院西北生态环境资源研究院 | Rod type pile foundation capable of preventing pile body from being pulled out and working method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018218900A1 (en) * | 2017-05-27 | 2018-12-06 | 河南理工大学 | Anchor-bolt hole interior reamer used for mining |
| CN108518192A (en) * | 2018-06-15 | 2018-09-11 | 焦作市恒利水文地质工程有限责任公司 | A kind of cannula cavity cuts milling device |
| CN109184567B (en) * | 2018-11-19 | 2023-10-20 | 河南理工大学 | Anchoring Kong Duoduan conical reaming device and control method |
| CN109184567A (en) * | 2018-11-19 | 2019-01-11 | 河南理工大学 | A kind of anchor hole multistage countersinking device and control method |
| CN109702248A (en) * | 2019-03-04 | 2019-05-03 | 李吴军 | A kind of reaming bit of workpiece blind hole |
| CN111456639A (en) * | 2020-04-30 | 2020-07-28 | 山东建筑大学 | Adjustable soil body enlarged head anchor rod drill bit and using method thereof |
| CN111456639B (en) * | 2020-04-30 | 2024-06-04 | 山东建筑大学 | Adjustable soil body expansion head anchor rod drill bit and use method thereof |
| CN113006846A (en) * | 2021-03-24 | 2021-06-22 | 江苏麦廊新材料科技有限公司 | Recyclable anchor rod device and using method thereof |
| CN113006846B (en) * | 2021-03-24 | 2023-08-18 | 江苏麦廊新材料科技有限公司 | Recoverable anchor rod device and using method thereof |
| CN114892672A (en) * | 2022-05-10 | 2022-08-12 | 北京市机械施工集团有限公司 | Foundation pit support construction process method |
| CN114892672B (en) * | 2022-05-10 | 2023-09-26 | 北京市机械施工集团有限公司 | Foundation pit supporting construction process method |
| CN116607553B (en) * | 2023-06-27 | 2023-09-26 | 中国科学院西北生态环境资源研究院 | Rod type pile foundation capable of preventing pile body from being pulled out and working method |
| CN116607553A (en) * | 2023-06-27 | 2023-08-18 | 中国科学院西北生态环境资源研究院 | Rod type pile foundation capable of preventing pile body from being pulled out and working method |
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| CN106958419B (en) | 2018-08-17 |
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Effective date of registration: 20190722 Address after: 839099 No. 17, Bayi Road, Hami City, Hami District, Xinjiang Uygur Autonomous Region (2nd Floor, Hami Vocational and Technical School Complex Building) Patentee after: Hami Yuxin energy industry research institute limited liability company Address before: 454000 Century Avenue, Jiaozuo high tech Zone, Henan, No. 2001 Patentee before: Henan Polytechnic University |