CN205743717U - Drilling rod diameter changeable drill bit mechanism - Google Patents
Drilling rod diameter changeable drill bit mechanism Download PDFInfo
- Publication number
- CN205743717U CN205743717U CN201620390805.6U CN201620390805U CN205743717U CN 205743717 U CN205743717 U CN 205743717U CN 201620390805 U CN201620390805 U CN 201620390805U CN 205743717 U CN205743717 U CN 205743717U
- Authority
- CN
- China
- Prior art keywords
- arm
- drilling rod
- rod assemblies
- drill rod
- drill
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
This utility model belongs to technical field of buildings, relates to a kind of drilling rod diameter changeable drill bit mechanism.Including drill rod assemblies; in described drill rod assemblies movable have one can be to the diameter changing mechanism drawn close or move away from the direction of axis line of drill rod assemblies; described diameter changing mechanism can under the dynamic action of drill rod assemblies circumferentially rotating along drill rod assemblies, thus change the aperture of drill rod assemblies boring and the slewing area of diameter changing mechanism is become larger to the direction at top by the bottom of drill rod assemblies.This utility model is simple and reliable for structure, in boring procedure can adjustment aperture at any time, thus reach effect and the uniform force of reducing.
Description
Technical field
This utility model belongs to technical field of buildings, relates to a kind of drilling rod diameter changeable drill bit machine
Structure, it is adaptable to is holed in ground thus make underground concrete structure.
Background technology
At building field, when making cement mixing method or drilled pile, it is required for first on ground
Getting a boring below face, the size of boring is directly related with the size of drill rod assemblies,
The size of drill rod assemblies is the biggest, and the boring obtained is the biggest.This just makes people make not
Needing to change different drill rod assemblies during with the boring in aperture, work efficiency seriously reduces.
People are through constantly exploring, it is proposed that various solutions, Chinese patent
Document discloses a kind of reaming bit [application number: 201410042392.8], including drilling rod,
Multiple cutter hubs, the reaming wing, lower blade, extension oil cylinder, blade, slurry pipe and hydraulic oil
Pipe assembly；Cutter hub is fixed on blade；Lower blade has with horizontal radiation solid in uniform way
It is scheduled on the outer peripheral face of drilling rod bottom；The reaming wing is positioned at the top of lower blade, along drilling rod radially
Being arranged symmetrically with, fork bearing pin is pivotally mounted on the key seat being positioned at drilling rod outer peripheral face, and
It is placed in the groove of cylinder barrel by its end；Slurry pipe is placed in piston and the piston of extension oil cylinder
In the hole of bar；Above-mentioned reaming bit uses combination type drilling structure, general with cutting except meeting
Outside the drilling function of face stake, when needs carry out base expanding and base expanding or ream operation, expanded by operation
Exhibition oil cylinder makes the reaming wing open, and increases stake end and the cross-sectional area of pile body of bearing pile, should
Drill bit is used for constructing various club-footed pile and Bottle gourd pile, has bearing capacity of single pile height, stake footpath chi
The features such as very little guarantee, easy construction, work stability and reliability and length in service life.
But such scheme structure is complicated, and the propagation direction bottom right of the reaming wing the most gradually becomes
Little, make reaming wing initial stressed relatively big, reaming wing discontinuity.
Utility model content
The purpose of this utility model is for the problems referred to above, it is provided that a kind of simple in construction, makes
With convenient drilling rod diameter changeable drill bit mechanism.
For reaching above-mentioned purpose, this utility model have employed following technical proposal: one is bored
Bar diameter changeable drill bit mechanism, including drill rod assemblies, in described drill rod assemblies, activity has one
Individual can to draw close or away from drill rod assemblies direction of axis line move diameter changing mechanism, described
Diameter changing mechanism can under the dynamic action of drill rod assemblies circumferentially rotating along drill rod assemblies,
Thus change the aperture of drill rod assemblies boring and the slewing area of diameter changing mechanism by drill rod assemblies
Bottom become larger to the direction at top.
In above-mentioned drilling rod diameter changeable drill bit mechanism, described diameter changing mechanism includes at least
A piece reducing arm, this reducing arm one end is hinged with drill rod assemblies, the other end and drive mechanism
Hinged, described drive mechanism can axially moving up and down thus drive along drill rod assemblies
Reducing arm rest is close or remote from drill rod assemblies.
In above-mentioned drilling rod diameter changeable drill bit mechanism, described drive mechanism one end is fixed
In drill rod assemblies, the other end is hinged with travelling arm and travelling arm away from the one of drive mechanism
Holding hinged with reducing arm, described drive mechanism has can be the most reciprocating defeated
The axial line of shaft and drive mechanism and the axis parallel of drill rod assemblies, drive mechanism is leaned on
One end of nearly reducing arm can move up and down.
In above-mentioned drilling rod diameter changeable drill bit mechanism, described drive mechanism is set in brill
On bar assembly, this drive mechanism includes actuator body and driver output shaft, driver
Output shaft is fixing with drill rod assemblies to be connected, and actuator body can be along driver output shaft
Axially move up and down and actuator body is hinged with travelling arm.
In above-mentioned drilling rod diameter changeable drill bit mechanism, fixing in described actuator body
Connect and have an idler arm being set in drill rod assemblies, this idler arm one end and driver
Body is fixing to be connected, and the other end is hinged with travelling arm.
In above-mentioned drilling rod diameter changeable drill bit mechanism, when actuator body pulls idler arm
When moving upward, driver output shaft can be inserted in idler arm, described idler arm
Inwall has stage portion, and this stage portion matches with driver output shaft, when stage portion is leaned on
During nearly driver output shaft, the end of driver output shaft can be resisted against in stage portion.
In above-mentioned drilling rod diameter changeable drill bit mechanism, described idler arm is away from the machine of driving
One end of structure is fixedly connected with a first reducing arm mounting disc, the first described reducing arm
Mounting disc is set in drill rod assemblies, and described diameter changing mechanism includes some along drill rod assemblies
The reducing arm that is uniformly arranged of circumference, described reducing arm one end is hinged with drill rod assemblies,
The other end is hinged with travelling arm, travelling arm and reducing arm one_to_one corresponding and with the first reducing arm
Mounting disc is hinged.
In above-mentioned drilling rod diameter changeable drill bit mechanism, described drill rod assemblies includes drilling rod
And drill bit, described drilling rod is fixedly connected with the second reducing arm mounting disc, reducing arm
Two ends are hinged with travelling arm and the second reducing arm mounting disc respectively, the second reducing arm mounting disc
It is close to drill bit.
In above-mentioned drilling rod diameter changeable drill bit mechanism, described drill rod assemblies includes drilling rod
And drill bit, described drilling rod is hollow structure and drilling rod is provided with at least one grout outlet,
Plugging a feed pipe for mortar in drilling rod, the slurry of described feed pipe for mortar output can be from pulp
Mouth flows out.
In above-mentioned drilling rod diameter changeable drill bit mechanism, described drilling-rod external wall is provided with at least
One to drilling rod inner recess or the rabbling mechanism that protrudes from drilling rod, on drilling rod and drill bit point
It is not provided with shaggy tooth.
Compared with prior art, the utility model has the advantage of: simple and reliable for structure,
In boring procedure can adjustment aperture at any time, thus reach effect and the uniform force of reducing；
Distance Shortened between reducing arm, when earth is drilled loose by drill bit, reducing arm can rapidly by
Earth stirs, and further increases work efficiency；This utility model can also realize limit and bore
The operation of limit, hole whitewashing, and homogenization effect, especially suitable use can be reached by rabbling mechanism
In making cement mixing method or variable-diameter cement-soil stirring piles.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is working state figure of the present utility model；
Fig. 3 is the structural representation of drive mechanism.
In figure: drill rod assemblies 1, diameter changing mechanism 2, reducing arm 3, drive mechanism 4, cunning
Swing arm 5, actuator body 6, bearing block 6a, driver output shaft 7, idler arm 8,
Stage portion the 9, first reducing arm mounting disc 10, drilling rod 11, drill bit the 12, second reducing arm
Mounting disc 13, grout outlet 14, feed pipe for mortar 15, rabbling mechanism 16, stir bar 16a.
Detailed description of the invention
This utility model is done further details of with detailed description of the invention below in conjunction with the accompanying drawings
Explanation.
Embodiment 1
As it is shown in figure 1, a kind of drilling rod diameter changeable drill bit mechanism, including drill rod assemblies 1,
Drill rod assemblies 1 includes drilling rod 11 and drill bit 12, and in described drill rod assemblies 1, activity has
One can to draw close or away from drill rod assemblies 1 direction of axis line move diameter changing mechanism 2,
Described diameter changing mechanism 2 can be along drill rod assemblies 1 under the dynamic action of drill rod assemblies 1
Circumferentially rotate, thus change aperture and the rotation of diameter changing mechanism 2 of drill rod assemblies 1 boring
Scope is become larger to the direction at top by the bottom of drill rod assemblies 1, and this structure can be direct
Earth drill rod assemblies being drilled loose stirs rapidly.When earth is not stirred pine completely, reducing
The resistance that mechanism 2 is subject to is relatively big, and the stirring scope of diameter changing mechanism 2 is the biggest, is subject to
Resistance is the biggest, the slewing area of diameter changing mechanism 2 by the bottom of drill rod assemblies 1 to top
Direction become larger this structure and make earth gradually be stirred pine, in the process gradually stirring pine
The resistance that middle diameter changing mechanism 2 is subject to tapers into, and just offsets diameter changing mechanism 2 owing to turning
Dynamic scope become big and by resistance become big impact, make whole diameter changing mechanism 2 stress equal
Even, stirring is the most evenly.
It will be appreciated by those skilled in the art that diameter changing mechanism 2 can be same with drill rod assemblies 1
Step rotates, it is also possible to by the decelerators such as gear box structure and asynchronous turn of drill rod assemblies 1
Dynamic, say, that diameter changing mechanism 2 can be connected with drill rod assemblies 1 by variator.
In the present embodiment, as it is shown in figure 1, when diameter changing mechanism 2 is drawn close to drill rod assemblies 1,
Slewing area diminishes, and the aperture got out diminishes naturally, as in figure 2 it is shown, work as diameter changing mechanism
2 in time expanding away from drill rod assemblies 1 direction, and slewing area becomes big, and the aperture got out is certainly
So become big, thus realize the purpose of reducing boring.
Specifically, as it is shown in figure 1, diameter changing mechanism 2 includes at least reducing arm 3,
This reducing arm 3 one end is hinged with drill rod assemblies 1, preferably hinged with drilling rod 11, the other end
Hinged with drive mechanism 4, described drive mechanism 4 can axial along drill rod assemblies 1
Move up and down thus drive reducing arm 3 closer or far from drill rod assemblies 1.
In particular, drive mechanism 4 one end is fixed in drill rod assemblies 1, the other end
It is hinged with travelling arm 5 and travelling arm 5 to cut with scissors with reducing arm 3 away from one end of drive mechanism 4
Connect, described drive mechanism 4 have can the most reciprocating output shaft, drive
Mechanism 4 can be cylinder, oil cylinder or worm and gear assembly, the axial line of drive mechanism 4
Axis parallel with drill rod assemblies 1, it is preferable that drive mechanism 4 is near reducing arm 3
One end can move up and down.
Drive mechanism 4 is set in drill rod assemblies 1, is namely set on drilling rod 11,
Shown in Fig. 2 and Fig. 3, this drive mechanism 4 includes actuator body 6 and driver
Output shaft 7, it will be appreciated by those skilled in the art that actuator body 6 or driver are defeated
Shaft 7 one of them must fixing with drill rod assemblies 1 be connected, in this embodiment, work
For the preferred scheme of one, driver output shaft 7 is fixing with drill rod assemblies 1 to be connected, and drives
Dynamic device body 6 can axially moving up and down and actuator body along driver output shaft 7
6 is hinged with travelling arm 5, namely actuator body 6 drive travelling arm 5 to lift thus
Reducing arm 3 is driven to draw close or away from drilling rod 11.Actuator body 6 may be also secured at axle
In bearing 6a, bearing block 6a is set in outside driver output shaft 7 and and actuator body
6 are slidably connected, and it is internal that bearing block 6a is positioned at actuator body 6, makes actuator body 6
Move up and down smooth.
A pull bar being set in drill rod assemblies 1 it is fixedly connected with in actuator body 6
Part 8, this idler arm 8 one end is fixing with actuator body 6 to be connected, the other end and slip
Arm 5 is hinged.When actuator body 6 pulls idler arm 8 to move upward, driver is defeated
Shaft 7 can be inserted in idler arm 8, and driver output shaft 7 is positioned at idler arm 8 and bores
Between bar 11, the inwall of described idler arm 8 has stage portion 9, this stage portion 9 with
Driver output shaft 7 matches, and when stage portion 9 is near driver output shaft 7, drives
The end of dynamic device output shaft 7 can be resisted against in stage portion 9, and stage portion 9 only plays location
Gear effect.
Idler arm 8 is fixedly connected with a first reducing arm away from one end of drive mechanism 4
Mounting disc 10, the first described reducing arm mounting disc 10 is set in drill rod assemblies 1,
I.e. first reducing arm mounting disc 10 is set on drilling rod 11, and described diameter changing mechanism 2 wraps
Include some reducing arms 3 being uniformly arranged along the circumference of drill rod assemblies 1, described reducing arm 3
One end is hinged with drill rod assemblies 1, and the other end is hinged with travelling arm 5, travelling arm 5 and change
Footpath arm 3 one_to_one corresponding and hinged with the first reducing arm mounting disc 10.Described drilling rod 11
On be fixedly connected with the second reducing arm mounting disc 13, the two ends of reducing arm 3 respectively with slip
Arm 5 and the second reducing arm mounting disc 13 are hinged, and the second reducing arm mounting disc 13 is close to bore
12, the earth that drill bit 12 is drilled loose directly is stirred dispersion by reducing arm 3, carries further
High work efficiency, the two ends of travelling arm 5 respectively with the first reducing arm mounting disc 10 and becoming
Footpath arm 3 is hinged.
Operation principle of the present utility model is: when people are at bore operation, need to obtain
During the less boring in aperture, actuator body 6 works, and rises along driver output shaft 7,
Pulling travelling arm 5 to rise, travelling arm 5 pulls reducing arm 3 near drilling rod 11, reducing arm
The slewing area of 3 diminishes, and obtains small-bore boring；When needing to obtain the brill that aperture is bigger
Kong Shi, actuator body 6 works, and declines along driver output shaft 7, promotes travelling arm
5 decline, and travelling arm 5 promotes reducing arm 3 away from drilling rod 11, the rotation model of reducing arm 3
Enclose change big, obtain large-diameter borehole.It should also be appreciated by one skilled in the art that in boring
During can also regulate the aperture of boring at any time, namely bored by actuator body 6
Raising and lowering during hole obtains the reducing boring that pore size is different.
Embodiment 2
The present embodiment is essentially identical with the structure of embodiment 1 and operation principle, difference
It is, as it is shown in figure 1, drilling rod 11 is provided with at least one for hollow structure and drilling rod 11
Individual grout outlet 14, plugs a feed pipe for mortar 15, described feed pipe for mortar 15 in drilling rod 11
The slurry of output can flow out from grout outlet 14.Drilling rod 11 outer wall be provided with at least one to
Drilling rod 11 inner recess or protrude from the rabbling mechanism 16 of drilling rod 11, rabbling mechanism 16
Primarily serving the effect of stirring slurry, when slurry flows out from grout outlet 14, slurry is positioned at
Drilling rod 11 is outside, and rabbling mechanism 16 stirs slurry makes slurry be evenly distributed on drilling rod 11
Around, it will be appreciated by those skilled in the art that the shape of rabbling mechanism 16, size not
Limit, can be strip, column or poroid etc., it is preferable that rabbling mechanism 16
For being fixed on the stirring bar on drilling rod 11 outer wall by welding or the mode of removably connecting
16a, stirring bar 16a are inclined on drilling rod 11.It is highly preferred that drilling rod 11 and brill
Being respectively equipped with shaggy tooth on 12, the size of shaggy tooth, shape do not limit, in order to increase
Add frictional force and mixing power, play the effect of homogenate.The another of shaggy tooth is set on drill bit 12
One purpose is for breaking up rock.
Preferred version, grout outlet 14 is positioned at the first reducing arm mounting disc 10 and the second reducing
Between arm mounting disc 13, when slurry flows out from grout outlet 14, can be directly by reducing
The reducing arm 3 of mechanism 2 stirs when rotating, thus mixes with earth, especially rapidly
It is when making cement mixing method, plays the whole uniform effect of pile body materials, carries
The fastness that high cement mixing method is overall.
Specific embodiment described herein is only for example to this utility model spirit
Explanation.This utility model person of ordinary skill in the field can be to described concrete
Embodiment is made various amendment or supplements or use similar mode to substitute, but not
Spirit of the present utility model can be deviateed or surmount model defined in appended claims
Enclose.
Although the most more employ drill rod assemblies 1, diameter changing mechanism 2, reducing arm 3,
Drive mechanism 4, travelling arm 5, actuator body 6, bearing block 6a, driver output shaft
7, idler arm 8, stage portion the 9, first reducing arm mounting disc 10, drilling rod 11, drill bit
12, the second reducing arm mounting disc 13, grout outlet 14, feed pipe for mortar 15, rabbling mechanism 16,
The terms such as stirring bar 16a, but it is not precluded from using the probability of other term.Use this
A little terms are only used to describe and explain essence of the present utility model more easily；It
To be construed to any additional restriction be all contrary with this utility model spirit.
Claims (10)
1. a drilling rod diameter changeable drill bit mechanism, including drill rod assemblies (1), its feature exists
In the upper activity of, described drill rod assemblies (1) have one can be to drawing close or away from drill rod assemblies
(1) diameter changing mechanism (2) of direction of axis line motion, described diameter changing mechanism (2)
Can under the dynamic action of drill rod assemblies (1) circumferentially rotating along drill rod assemblies (1),
Thus change aperture and the slewing area of diameter changing mechanism (2) that drill rod assemblies (1) is holed
Become larger to the direction at top by the bottom of drill rod assemblies (1).
Drilling rod the most according to claim 1 diameter changeable drill bit mechanism, it is characterised in that
Described diameter changing mechanism (2) includes at least reducing arm (3), this reducing arm (3)
One end is hinged with drill rod assemblies (1), and the other end is hinged with drive mechanism (4), described
Drive mechanism (4) can axially moving up and down thus drive along drill rod assemblies (1)
Reducing arm (3) is closer or far from drill rod assemblies (1).
Drilling rod the most according to claim 2 diameter changeable drill bit mechanism, it is characterised in that
Described drive mechanism (4) one end is fixed in drill rod assemblies (1), and the other end is hinged
There is travelling arm (5) and travelling arm (5) one end and the reducing arm away from drive mechanism (4)
(3) hinged, described drive mechanism (4) has can be the most reciprocating defeated
The axial line of shaft and drive mechanism (4) and the axis parallel of drill rod assemblies (1),
Drive mechanism (4) can move up and down near one end of reducing arm (3).
Drilling rod the most according to claim 3 diameter changeable drill bit mechanism, it is characterised in that
Described drive mechanism (4) is set in drill rod assemblies (1), this drive mechanism (4)
Including actuator body (6) and driver output shaft (7), driver output shaft (7)
Fixing with drill rod assemblies (1) and be connected, actuator body (6) can export along driver
Axially up and down motion and the actuator body (6) of axle (7) are hinged with travelling arm (5).
Drilling rod the most according to claim 4 diameter changeable drill bit mechanism, it is characterised in that
It is fixedly connected with one in described actuator body (6) and is set in drill rod assemblies (1)
On idler arm (8), this idler arm (8) one end and actuator body (6) are fixing even
Connecing, the other end is hinged with travelling arm (5).
Drilling rod the most according to claim 5 diameter changeable drill bit mechanism, it is characterised in that
When actuator body (6) pulls idler arm (8) to move upward, driver output shaft
(7) can be inserted in idler arm (8), the inwall of described idler arm (8) has platform
Rank portion (9), this stage portion (9) matches with driver output shaft (7), works as step
During close driver output shaft (7), portion (9), the end energy of driver output shaft (7)
It is resisted against in stage portion (9).
Drilling rod the most according to claim 5 diameter changeable drill bit mechanism, it is characterised in that
Described idler arm (8) is fixedly connected with one away from one end of drive mechanism (4)
One reducing arm mounting disc (10), the first described reducing arm mounting disc (10) is set in brill
On bar assembly (1), described diameter changing mechanism (2) includes some along drill rod assemblies (1)
The reducing arm (3) that is uniformly arranged of circumference, described reducing arm (3) one end and drilling rod group
Part (1) is hinged, and the other end is hinged with travelling arm (5), travelling arm (5) and reducing arm
(3) one_to_one corresponding and hinged with the first reducing arm mounting disc (10).
Drilling rod the most according to claim 7 diameter changeable drill bit mechanism, it is characterised in that
Described drill rod assemblies (1) includes drilling rod (11) and drill bit (12), described drilling rod
(11) the second reducing arm mounting disc (13), the two of reducing arm (3) it are fixedly connected with on
Hold hinged with travelling arm (5) and the second reducing arm mounting disc (13) respectively, the second reducing
Drill bit (12) is close in arm mounting disc (13).
Drilling rod the most according to claim 1 diameter changeable drill bit mechanism, it is characterised in that
Described drill rod assemblies (1) includes drilling rod (11) and drill bit (12), described drilling rod
(11) it is hollow structure and drilling rod (11) is provided with at least one grout outlet (14),
Plugging a feed pipe for mortar (15) in drilling rod (11), described feed pipe for mortar (15) exports
Slurry can flow out from grout outlet (14).
Drilling rod the most according to claim 9 diameter changeable drill bit mechanism, its feature exists
In, described drilling rod (11) outer wall is provided with at least one to drilling rod (11) inner recess
Or protrude from the rabbling mechanism (16) of drilling rod (11), drilling rod (11) and drill bit (12)
On be respectively equipped with shaggy tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390805.6U CN205743717U (en) | 2016-05-03 | 2016-05-03 | Drilling rod diameter changeable drill bit mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390805.6U CN205743717U (en) | 2016-05-03 | 2016-05-03 | Drilling rod diameter changeable drill bit mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205743717U true CN205743717U (en) | 2016-11-30 |
Family
ID=57372325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620390805.6U Active CN205743717U (en) | 2016-05-03 | 2016-05-03 | Drilling rod diameter changeable drill bit mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205743717U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781424A (en) * | 2016-05-03 | 2016-07-20 | 周兆弟 | Variable-diameter drilling bit mechanism for drill stem |
| CN110695410A (en) * | 2019-09-30 | 2020-01-17 | 达英科(南京)设备有限公司 | Diameter-variable hand-held electric drill |
-
2016
- 2016-05-03 CN CN201620390805.6U patent/CN205743717U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781424A (en) * | 2016-05-03 | 2016-07-20 | 周兆弟 | Variable-diameter drilling bit mechanism for drill stem |
| CN110695410A (en) * | 2019-09-30 | 2020-01-17 | 达英科(南京)设备有限公司 | Diameter-variable hand-held electric drill |
| CN110695410B (en) * | 2019-09-30 | 2020-12-08 | 武义锐鹰工具制造有限公司 | Diameter-variable hand-held electric drill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105781424A (en) | Variable-diameter drilling bit mechanism for drill stem | |
| CN1944939B (en) | Separable driving type sleeve screw drilling rig and its construction method | |
| CN200975217Y (en) | Canula drilling machine | |
| CN201106404Y (en) | Reaming machine special for casing tube welldrilling | |
| CN104453717B (en) | Long auger drilling and bottom expanding device and expanded anchor rod construction method | |
| WO2016150113A1 (en) | Positive displacement motor drill and rock breaking well drilling method therefor | |
| US10633927B2 (en) | Internal reamer for anchor shaft hole for mining | |
| CN102505919A (en) | Bearizing drilling bit | |
| CN102002941B (en) | Large-aperture long screw rig, reinforcement cage concreting device and fabricating method of large-aperture deep pile | |
| CN205743733U (en) | Drill rod assemblies for the bored enlarged footing of stake machine | |
| CN105822234B (en) | For the drill rod assemblies for boring enlarged footing of stake machine | |
| CN104594801B (en) | Rock drilling tool and disturbance rock-breaking and well-drilling method are broken in disturbance | |
| CN104404951B (en) | Long spire stake machine with expander and pile making method | |
| CN106522843B (en) | A kind of drilling well hydro powered oscillator and application method | |
| CN205743717U (en) | Drilling rod diameter changeable drill bit mechanism | |
| CN104963626A (en) | Long spiral drilling machine used for forming long spiral broaching pile and pile forming method | |
| CN201843132U (en) | Large-aperture deep-pile long-auger drilling rig | |
| CN202451059U (en) | Hole dilating drill bit | |
| CN219061519U (en) | Anchor rod pore-forming enlarged bit device | |
| CN208089226U (en) | A kind of extruding and removing soil combination drill tool and CFG extruding and removing soil stakes | |
| CN114753773A (en) | Helical drill bit with cutting teeth with adjustable inclination angle | |
| CN205387906U (en) | Torsion impact dynamic instrument | |
| CN210067974U (en) | Pile hole bottom expanding device | |
| CN108035680A (en) | A kind of extruding and removing soil combination drill tool, the stake of CFG extruding and removing soils and preparation method | |
| CN109779534A (en) | One kind taking native Screw Pile drilling tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |