CN106812471B - Reducing rotary drill tools and construction method - Google Patents
Reducing rotary drill tools and construction method Download PDFInfo
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- CN106812471B CN106812471B CN201710183532.7A CN201710183532A CN106812471B CN 106812471 B CN106812471 B CN 106812471B CN 201710183532 A CN201710183532 A CN 201710183532A CN 106812471 B CN106812471 B CN 106812471B
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- bucket
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- 238000010276 construction Methods 0.000 title claims description 12
- 238000005553 drilling Methods 0.000 claims abstract description 132
- 239000002689 soil Substances 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 5
- 239000004035 construction material Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000009412 basement excavation Methods 0.000 abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000009411 base construction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 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
- 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
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- 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
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
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)
Abstract
The invention discloses reducing rotary drill tools, including drilling bucket, movable scraper device, wherein drilling bucket rotary digging stake holes and deslagging；Movable scraper device is set in drilling bucket, and is driven and rotated by drilling bucket；And when being exerted a force, movable scraper device can stretch out outside drilling bucket, to cut the ground of contact.Reducing rotary drill tools provided by the invention, hard waste and old construction materials various in stratum or the biggish ground of hardness can be cut into boring mud, so that casing is smoothly sunk and does not influence the excavation of casing or less stratum or rock stratum, also ensure that pile body diameter or more is almost the same, structure is simple simultaneously, and cost is cheap.
Description
Technical field
The present invention relates to building excavations and foundations rotary digging drilling hole bored concrete pile technical field of construction more particularly to reducing rotary diggings
Drilling tool and construction method.
Background technique
It constructs under loose sand, thin dust rock layers, drifting sand layer, the thick geological conditions such as Muddy Bottoms layer and karst landform
Cast-in-situ bored pile.Generally retaining wall is carried out using measures such as mud, steel pile castings.With the raising of environmental requirement, mud off drilling
It is limited.It therefore will be more more and more universal using the construction drill bored concrete pile of steel pile casting retaining wall method.Steel pile casting is squeezed at present,
Method for implantation is roughly divided into following two categories:
One kind is: the frictional force between making steel pile casting overcome each soil layer using Special rocking, vibratory equipment between casing makes casing
After the unfavorable stratum passed through in a machine drilling construction is until reach the good ground for not needing retaining wall, using taking slag equipment to empty shield
In cylinder after dregs, installation steel reinforcement cage and casting concrete pile.But the technique has the disadvantages that when encountering following scenario described, shield
Cylinder can not pass through: (1) having various waste and old construction materials in Modern landfill object stratum；(2) rigid piece stone, wind are locally contained in stratum
Change ball etc.；(3) fine and close sand pebble layer, medium weathering etc. is compared with hard formation.
Second is: being crept into using full casing with pipe drilling machine.The method is with pore-forming work efficiency is fast, quality is high, can be shortened the duration
The advantages that, but full casing used is with pipe drilling machine, expensive, use, the disadvantages of maintenance cost is higher.
Summary of the invention
Reducing rotary drill tools provided by the invention solve one or more in prior art problem.
Reducing rotary drill tools provided by the invention, including drilling bucket, movable scraper device, wherein
Drilling bucket rotary digging stake holes and deslagging；
Movable scraper device is set in drilling bucket, and is driven and rotated by drilling bucket；And when being exerted a force, movable scraper device energy
It stretches out outside drilling bucket, to cut the ground of contact.
Reducing rotary drill tools provided by the invention, can be by hard waste and old construction materials or hardness various in stratum
Biggish ground is cut into boring mud, so that casing is smoothly sunk and does not influence the excavation of casing or less stratum or rock stratum, moreover it is possible to
Guarantee that pile body diameter or more is almost the same, while structure is simple, cost is cheap.
In some embodiments, movable scraper device includes pedestal, scraper, limited post；
Pedestal is set to drilling bucket；
Scraper is articulated with pedestal, and can rotate around hinged place；
Limited post is set to pedestal and is located at the two sides of scraper, for limiting the slewing area of scraper；
Scraper drives scraper rotation by drilling bucket；And when being exerted a force, it can stretch out outside drilling bucket, to cut the ground of contact.
In this way, rotatable scraper is arranged on drilling bucket, using scraper and ground friction when scraper stretch out or withdraw,
It drives scraper rotation to realize to the expanding of stake by drilling bucket again, drilling bucket rotary digging stake holes is nor affected on when not needing be expanding, use
Simple design scheme had not only realized that stake holes was expanding, but also had saved cost.
In some embodiments, pedestal is equipped with the first screw hole, the second screw hole, third screw hole；
Scraper one end is equipped with trapezoidal hole corresponding with third screw hole, and bolt passes through trapezoidal hole and matches with third screw hole
Scraper and pedestal are connected and fixed by merging, and scraper can be rotated around bolt；
Limit post part be equipped with the first screw hole, the matched screw thread of the second screw hole, if threaded part respectively with
First screw hole or the cooperation of the second screw hole, rest part protrude from base-plates surface；
Between the first screw hole and the second screw hole, the limited post of the wherein side rotation Shi Nengyu offsets scraper.
In this way, scraper, when rotating and reverse, limited post can resist scraper, limitation scraper continues to rotate, and satisfaction is set
Meter demand.
In some embodiments, the cut end of scraper is equipped with wear parts.
In this way, the wearability for improving scraper improves the service life of scraper for protecting scraper.
In some embodiments, wear parts use wear-resisting alloy steel.
In this way, wear-resisting alloy steel intensity with higher, hardness toughness and wearability.
The construction method of reducing rotary drill tools provided by the invention, comprising the following steps:
S1: rotary digging driver drilling rod driving drilling bucket, which rotates in the forward direction, to be excavated ground to projected depth downwards and forms stake holes, to drilling bucket
After built-in fully-jewelled slag, pressurization reversion drilling bucket is closed the hopper door of drilling bucket, while lifting drilling bucket makes movable scraper device be detached from stake
The friction of hole bottom rock-soil；
S2: boring mud is unloaded after drilling bucket is extracted ground by drilling rod and repeats S1 step, up to stake holes rotary digging to needs
Depth；
S3: when needing expanding when stake holes is excavated to projected depth, drilling bucket is sunk down into stake holes bottom, is driven by drilling rod
Drilling bucket reversion, at this time when the ground friction of the scraper of movable scraper device and stake holes bottom, scraper is stretched with the rotation of drilling bucket opposite direction
Out outside drilling bucket and abutting with the limited post of side makes scraper be in stretching state, scraper with drilling bucket during rotating, no
The side wall progress of disconnected cutting stake holes is expanding, while promoting drilling bucket, so that forming the stake holes that a diameter is greater than drilling bucket below drilling bucket；
S4: after the completion of drilling bucket is expanding from lower to upper, the boring mud of stake holes side wall cutting falls on stake holes bottom, drilling rod driving
Drilling bucket rotates in the forward direction and drilling bucket sinks, and when the movable scraper device on drilling bucket contacts friction with boring mud, scraper is anti-with drilling bucket
Direction rotates and withdraws drilling bucket, at this time repeatedly S1-S2 step, until boring mud is completely exhausted out；
S5: repetition S1-S4 can be segmented rotary digging stake holes and stake holes is expanding, until projected depth.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the reducing rotary drill tools of embodiment provided by the invention；
Fig. 2 is a kind of structural representation of the movable scraper harness of the reducing rotary drill tools of embodiment provided by the invention
Figure；
Fig. 3 is a kind of base construction schematic diagram of the reducing rotary drill tools of embodiment provided by the invention；
Fig. 4 is a kind of blade construction schematic diagram of the reducing rotary drill tools of embodiment provided by the invention；
Fig. 5 is that a kind of movable scraper device of the reducing rotary drill tools of embodiment provided by the invention is received in stake holes
The structural schematic diagram held together；
Fig. 6 is that a kind of movable scraper device of the reducing rotary drill tools of embodiment provided by the invention is stretched in stake holes
Structural schematic diagram out.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings of the specification.
As shown in figures 1 to 6, reducing rotary drill tools, including drilling bucket 1, movable scraper device 2, wherein
1 rotary digging stake holes 88 of drilling bucket and deslagging, movable scraper device 2 are set in drilling bucket 1, and are driven and rotated by drilling bucket 1；
And when being exerted a force, movable scraper device 2 can stretch out outside drilling bucket 1, to cut the ground of contact.
Reducing rotary drill tools provided by the invention, by further being reequiped in existing drilling bucket 1, by movable scraper device
2 are mounted on drilling bucket 1, and drilling bucket 1 is connected with rotary digging driver drilling rod and is rotated by drilling rod driving drilling bucket 1.When drilling bucket 1 inverts, drive
Movable scraper 2 is driven to rotate, while dynamic movable scraper device 2 stretches out outside drilling bucket and cut the ground of contact by force, then may be used
Realize the expanding of stake holes 88.Such mode solves casing 99 in the prior art and can not be passed through in bottom by vibration, the method shaken
Various hard waste and old construction materials or the biggish ground of hardness and reach retaining wall depth, also solved simultaneously using full casing
99 and pipe drilling machine drilling equipment price it is expensive, use, the problems such as maintenance cost is higher.
In practice, movable scraper device 2 can be a set of, or more sets, according to the diameter and reality of drilling bucket 1
Border needs situation to determine.
Specifically, movable scraper device 2 includes pedestal 21, scraper 22, limited post 23.Wherein, pedestal 21 is set to drilling bucket 1,
Scraper 22 is articulated with pedestal 21, and can rotate around hinged place, and limited post 23 is set to pedestal 21 and is located at the two sides of scraper 22,
For limiting the slewing area of scraper 22, scraper 22 drives scraper 22 to rotate by drilling bucket 1；And when being exerted a force, it can stretch out outside drilling bucket
Portion, to cut the ground of contact.
In this way, scraper 22 can be rotated forward or be inverted along hinged place, when rotation, offsets with side limited post 23 therein, limit
Position column 23 limit continuing to rotate for scraper 22 so that scraper 22 can stretch out when be in stretching state, to 88 side wall of stake holes into
Row cutting, and rounding state is in when collapsing, avoiding scraper 22, transition rotates in a rotational direction.
Further, pedestal 21 is equipped with the first screw hole 211, the second screw hole 212, third screw hole 213.Scraper 22 1
End is equipped with trapezoidal hole 221 corresponding with third screw hole 213, and bolt passes through trapezoidal hole 221 and cooperates with third screw hole 213
Scraper and pedestal 21 are connected and fixed, scraper 22 can be rotated around bolt, and 23 part of limited post is equipped with and the first screw hole 211, the
The matched screw thread in two-screw hole 212, if threaded part cooperates with the first screw hole 211 or the second screw hole 212 respectively,
Rest part protrudes from 21 surface of pedestal, and scraper 22 is between the first screw hole 211 and the second screw hole 212, energy when rotation
It offsets with the limited post 23 of wherein side.
At work, drilling bucket 1 rotates forward rotary digging stake holes 88, while movable scraper device 2 being driven to turn along the same direction
It is dynamic, and the friction of scraper 22 and bottom rock-soil drives scraper 22 to rotate backward around bolt, when scraper 22 turns to the limit with side
Position column 23 then stops operating when offseting, and scraper 22 is in rounding state at this time, so that movable scraper device 2 does not interfere drilling bucket
1 rotary digging stake holes, 88 operation；When needing expanding to stake holes 88, drilling bucket 1, which is placed in 88 bottom of stake holes, makes movable scraper device 2 and rock
Soil contact makes ground exert a force scraper 22, and driving drilling bucket 1 rotates backward and movable scraper device 2 is driven to turn along the same direction
It is dynamic, and the friction of scraper 22 and bottom rock-soil is so that scraper 22 is rotated forward around bolt, when scraper 22 turns to and the other side
Limited post 23 then stop operating when supporting, and scraper 22 be in stretching state at this time, at the same scraper 22 with drilling bucket 1 ceaselessly reversely
Ground side wall is cut in rotation, realizes that stake holes 88 is expanding.
In order to protect scraper 22, wear parts 3 can be equipped in the cut end of scraper 22, the materials of wear parts 3 can be with
Using wear-resisting alloy steel.The wearability of scraper 22 can be improved in this way, improve the service life of scraper 22.
The present invention also provides reducing rotary drill tools construction methods, the specific steps are as follows:
S1: the drilling rod driving drilling bucket 1 of Spiral digging machine, which rotates in the forward direction, to be excavated ground to projected depth downwards and forms stake holes 88, to
After the built-in fully-jewelled slag of drilling bucket 1, pressurization reversion drilling bucket 1 is closed the hopper door of drilling bucket 1, while lifting drilling bucket 1 fills movable scraper
Set the friction of 2 disengaging stake holes, 88 bottom rock-soil；
S2: boring mud and repeatedly S1 step are unloaded after drilling bucket 1 is extracted ground by drilling rod, up to 88 rotary digging of stake holes to need
The depth wanted；
S3: when needing expanding when stake holes 88 is excavated to projected depth, drilling bucket 1 is sunk down into 88 bottom of stake holes, passes through brill
Bar drives drilling bucket 1 to invert, at this time when the ground friction of the scraper 22 of movable scraper device 2 and 88 bottom of stake holes, scraper 22 and brill
1 outside of drilling bucket is stretched out in 1 opposite direction that struggles against rotation and abutting with the limited post of side 23 makes scraper 22 be in stretching state, and scraper 22 exists
During rotating with drilling bucket 1, the side wall progress for constantly cutting stake holes 88 is expanding, while promoting drilling bucket 1, so that 1 lower section of drilling bucket
Form the stake holes 88 that a diameter is greater than drilling bucket 1；
S4: after the completion of drilling bucket 1 is expanding from lower to upper, the boring mud of 88 side wall of stake holes cutting falls on 88 bottom of stake holes, bores
Bar driving drilling bucket 1 rotates in the forward direction and drilling bucket 1 sinks, and when the movable scraper device 2 on drilling bucket 1 contacts friction with boring mud, scrapes
Knife 22 and 1 opposite direction of drilling bucket rotates and withdraw drilling bucket 1, at this time repeatedly S1-S2 step, up to boring mud is completely exhausted out；
S5: repetition S1-S4 can be segmented rotary digging stake holes 88 and stake holes 88 is expanding, until projected depth.
Construction method according to the present invention, below by way of for for assisting casing 99 to squeeze into stratum to construction of the invention
Method is further described.
S1: casing 99 is screwed in into stratum until casing 99 screws in underground, or encounters using the casing driver of Spiral digging machine
Barrier can not backspin it is fashionable, use reducing rotary drill tools according to the present invention instead；
S2: after Spiral digging machine replacement is with the drilling bucket 1 of movable scraper device 2, routinely rotating forward the ground in cutting casing 99,
After the built-in fully-jewelled slag of drilling bucket 1, pressurization reversion drilling bucket 1 is closed hopper door, while lifting drilling bucket 1 keeps movable scraper device 2 de-
Friction from 88 bottom rock-soil of stake holes；
S3: unloading boring mud after drilling bucket 1 is extracted ground by drilling rod, repeats step 1-2 until by the rock in casing 99
It is native all to take out；
S4: it continues through rotary digging driver drilling rod driving drilling bucket 1 and rotates in the forward direction the ground excavated under 99 internal diameter of casing downwards and arrive
Projected depth；
S5: after the ground rotary digging under 99 internal diameter of casing is to projected depth, drilling bucket 1 is driven to invert by drilling rod, at this point, living
Scraper 22 and the bottom rock-soil friction of dynamic scraper device 2 reversely rotate stretch out outside drilling bucket 1 and with 23 phase of the limited post of side
To preventing scraper 22 from continuing to rotate so that scraper 22 is maintained at stretching state, scraper 22 during drilling bucket 1 drives and rotates,
Ground constantly between cutting 88 lower inner wall of casing and outer wall, promotes drilling bucket 1 while cutting ground, so that 1 lower section of drilling bucket
The stake holes 88 that a diameter is slightly larger than casing 99 is formed in scope of design, continues to sink convenient for casing 99；
S6: using the casing driver of Spiral digging machine, casing 99 is screwed in into underground；
S7: repeating step 4-6 until casing 99 sinks to the top of good ground or the lower part of instable layer.So far complete
At the embedded of casing 99.
It should be noted that in the present embodiment, in order to enable drilling bucket 1 can pass through 99 rotary digging stake holes 88 of casing and row
Ground in casing 99 out, the movable scraper dress that the diameter of drilling bucket 1 is selected the internal diameter for being less than casing 99, and is mounted on drilling bucket 1
Set 2 scraper 22 rotation stretch out drilling bucket 1 it is outer when, the motion profile diameter of rotation is slightly larger than casing 99, so just can be by stake
Hole 88 expands to meet the embedment of casing 99.
It should be noted that " rotating forward " mentioned in the present invention and " rotating backward " are only to combine reducing churning driven
The working condition description of the invention of tool, and further limited not as of the invention.
The above are merely some embodiments of the present invention.For those of ordinary skill in the art, it is not departing from
Under the premise of the invention is conceived, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (1)
1. the construction method of reducing rotary drill tools, which comprises the following steps:
S1: rotary digging driver drilling rod driving drilling bucket (1), which rotates in the forward direction, excavates ground to projected depth downwards and is formed stake holes (88), to be drilled
It struggles against after (1) built-in fully-jewelled slag, pressurization reversion drilling bucket (1) is closed the hopper door of drilling bucket (1), while lifting drilling bucket (1) and make activity
The friction of scraper device (2) disengaging stake holes (88) bottom rock-soil；
S2: boring mud and repeatedly S1 step are unloaded after drilling bucket (1) is extracted ground by drilling rod, up to stake holes (88) rotary digging to need
The depth wanted；
S3: when needing expanding when stake holes (88) are excavated to projected depth, drilling bucket (1) is sunk down into stake holes bottom, passes through drilling rod
Drilling bucket (1) reversion is driven, at this time when the scraper (22) of movable scraper device (2) and the ground friction of stake holes (88) bottom, scraper
(22) stretching drilling bucket (1) outside is rotated with drilling bucket (1) opposite direction and abutting with the limited post of side (23) is in scraper (22)
Stretching state, during rotating with drilling bucket (1), constantly the side wall of cutting stake holes (88) carries out expanding scraper (22), simultaneously
It is promoted drilling bucket (1), so that forming the stake holes (88) that a diameter is greater than drilling bucket (1) below drilling bucket (1)；
S4: after the completion of drilling bucket (1) is expanding from lower to upper, the boring mud of stake holes (88) side wall cutting falls on stake holes (88) bottom,
Drilling rod driving drilling bucket (1) rotates in the forward direction and drilling bucket (1) sinks, and contacts to the movable scraper device (2) on drilling bucket (1) with boring mud
When friction, scraper (22) and drilling bucket (1) opposite direction rotates and withdraw drilling bucket (1), at this time repeatedly S1-S2 step, up to boring mud is complete
Full discharge；
S5: repeating S1-S4 segmentation rotary digging stake holes (88) and stake holes (88) is expanding, until projected depth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710183532.7A CN106812471B (en) | 2017-03-24 | 2017-03-24 | Reducing rotary drill tools and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710183532.7A CN106812471B (en) | 2017-03-24 | 2017-03-24 | Reducing rotary drill tools and construction method |
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| CN109707332B (en) * | 2018-12-08 | 2023-08-29 | 深圳市勘察研究院有限公司 | Rotary drilling coring device and drilling method using same |
| CN111706263A (en) * | 2020-07-20 | 2020-09-25 | 北京三一智造科技有限公司 | Pipe following drilling tool and rotary drilling rig |
| CN113445933A (en) * | 2021-07-01 | 2021-09-28 | 山东省建筑科学研究院有限公司 | Combined pile drill rod, drilling tool and combined pile manufacturing method |
| CN113982488B (en) * | 2021-09-10 | 2024-03-26 | 浙江天弘机器人科技有限公司 | Deep foundation pit tunneling robot and operation method thereof |
| CN115464729B (en) * | 2022-08-08 | 2023-05-26 | 会同汇达竹业有限公司 | Broken powder process equipment of bamboo |
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|---|---|---|---|---|
| CN1779209A (en) * | 2004-11-17 | 2006-05-31 | 陈理新 | Special drilling tool of extendable columnar stairstep |
| CN201031622Y (en) * | 2007-04-19 | 2008-03-05 | 刘国宇 | Drill of rotary dig/drill machine |
| US7686103B2 (en) * | 2007-06-06 | 2010-03-30 | San Juan Coal Company | Drill bit with radially expandable cutter, and method of using same |
| CN103114805B (en) * | 2013-03-19 | 2014-10-29 | 天津开发区三友新科技开发有限公司 | Drilling and reaming dual-purpose drilling tool and construction method thereof |
| CN203488103U (en) * | 2013-09-03 | 2014-03-19 | 北京市三一重机有限公司 | Rotary drilling tool and rotary drilling machine provided with same |
| CN203701991U (en) * | 2013-10-31 | 2014-07-09 | 北京市三一重机有限公司 | Drilling bucket and rotary drilling rig |
| CN104711973A (en) * | 2015-01-07 | 2015-06-17 | 朱奎 | Construction method for small-diameter pile composite foundation |
| CN105064985B (en) * | 2015-07-20 | 2018-02-16 | 中铁十七局集团第四工程有限公司 | The decision method for carrying out the dynamic adjustment of vertical shaft drilling process is analyzed based on slag charge |
| CN205100879U (en) * | 2015-10-25 | 2016-03-23 | 湖北中阔岩土机械化工程有限公司 | Crowded counterboring machine is dug soon to sickleleaf style |
| CN105298499A (en) * | 2015-11-12 | 2016-02-03 | 中国水利水电第七工程局有限公司 | Excavation deviation processing method of raise-boring machine for deep vertical shaft |
| CN205778653U (en) * | 2016-05-26 | 2016-12-07 | 中铁三局集团有限公司 | Two-door the bottom of a pan drilling bucket |
| CN206625788U (en) * | 2017-03-24 | 2017-11-10 | 深圳市盛业地下工程有限公司 | Reducing rotary drill tools |
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