CN209523708U - A kind of positive-circulation drilling device - Google Patents
A kind of positive-circulation drilling device Download PDFInfo
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- CN209523708U CN209523708U CN201920107458.5U CN201920107458U CN209523708U CN 209523708 U CN209523708 U CN 209523708U CN 201920107458 U CN201920107458 U CN 201920107458U CN 209523708 U CN209523708 U CN 209523708U
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Abstract
The utility model discloses a kind of positive-circulation drilling devices, including drilling rod, drilling rod includes internal layer drilling rod, internal layer drilling rod is supported in outer layer auger stem by bearing, internal layer drilling rod is hollow structure, internal layer drilling rod lower part is fixed with augers, and internal layer drilling rod is mounted on the power output shaft of the second drilling machine, and outer layer auger stem is mounted on the power output shaft of the first drilling machine.Using double-layer spiral drilling rod, boring mud rises along the helical blade of auger stem, and deslagging speed is fast, high-efficient, and is not influenced by bore diameter.
Description
Technical field
The utility model belongs to cast-in-situ bored pile drilling technique field, and in particular to a kind of positive-circulation drilling device.
Background technique
Cast-in-situ bored pile refers to be crept into soil with the machinery such as drilling machine, is unearthed slag in the broken soil body and pore-forming, then
Framework of steel reinforcement is put into hole, then concrete perfusion and form pile body.The characteristics of cast-in-situ bored pile, is that construction equipment is simple, grasps
Facilitate, is suitable for a variety of sandy soils, cohesive soil, is also applied for the soil layers such as rubble, cobble and rock stratum.Therefore, cast-in-situ bored pile
It is widely used in engineering.
Currently, the common boring method in China mainly has Drilling by inverse circulation and auger stem pore-forming etc..Wherein, direct circulation at
Hole is while drilling, and mud is pressed into mud halter by slush pump, is sprayed into drilling by drilling rod center from drill bit, mud is taken
Band boring mud rises along drilling, is expelled to sedimentation basin from casing top plasma discharge hole, boring mud precipitates herein and mud enters mud pit and follows
Ring uses.Drilling by inverse circulation equipment is simple, easy to operate, technical maturity, and when hole depth is less deep, aperture is crept into when being less than 800mm
It is high-efficient.But when stake diameter is larger, the annular section between drilling rod and hole wall is larger, speed of backflowing is low when mud recycles, deslagging
Ability is weak.Mud speed of backflowing such as is set to increase to 0.20~0.35m/s, then the discharge rate of slush pump needs very big, is difficult to reach sometimes
It arrives, have to the at this time relative density for improving mud and viscosity.But if mud density is excessive, consistency is big, then is difficult to that boring mud is discharged,
Mud cake on the wall of borehole thickness is big, influences pore-forming and borehole cleaning, can be very good to solve this using the auger stem in dry method forming hole method
Problem.Auger stem pore-forming principle is when being drilled, and auger stem rotates in the borehole, and auger stem and hole wall constitute one
A auger conveyor, bottom hole boring mud are just gradually conveyed by the helical blade on drilling rod backward, until being easily discharged out of the hole.Drill bit is constantly broken
Rock, drilling rod can obtain higher drilling efficiency with regard to continuous discharging slag, using auger stem deslagging.But auger stem subject it is larger
Axis pressure, rotary torque, drilling process resistance is big, and power hungry is more, and helical blade abrasion is severe, above-mentioned in cohesive soil to ask
Topic is more prominent.
Summary of the invention
In view of the deficiencies in the prior art with deficiency, the purpose of this utility model is to provide a kind of positive-circulation drillings
Device, present apparatus drilling efficiency when stake diameter is larger is high, and mud consumption is few, and rotary torque is small, and the helical blade degree of wear is low
Drilling by inverse circulation device.
In order to solve the above-mentioned technical problem, the application, which adopts the following technical scheme that, is achieved:
A kind of positive-circulation drilling device, including drilling rod, drilling rod include internal layer drilling rod, and internal layer drilling rod is supported on outer by bearing
In layer auger stem, internal layer drilling rod is hollow structure, and internal layer drilling rod is mounted on the power output end of the second drilling machine, and internal layer drilling rod
End augers is installed, outer layer auger stem is mounted on the defeated end of power of the first drilling machine.
Further, outer layer auger stem includes the blade of the body of rod and screw arrangement on the body of rod.
Further, augers includes drill body, and drill body is hollow structure, is fixed at least on drill body
Two blades, blade are screw blade, offer grout outlet on drill body.
Further, it is fixed with cutter on blade, the cut direction of cutter and blade is vertical.
Further, if being provided with dry bearing between internal layer drilling rod and outer layer auger stem, the spacing between adjacent bearing
For 1m~1.5m.
Further, internal layer drilling rod is connected to mud halter, and mud halter is connected by pipeline with slush pump.
Further, casing is provided in the drilling of drilling rod upper end, casing top offers plasma discharge hole.
It further, further include drilling cramp, the first drilling machine, the second drilling machine and mud halter are installed on drilling cramp.
Compared with prior art, the utility model at least has technical effect beneficial below:
Using double-layer spiral drilling rod, mud lubrication, internal layer drills, outer layer deslagging, and torque and resistance reduce in boring procedure,
Power is reduced, boring mud rises along the helical blade of auger stem, and deslagging speed is fast, and it is high-efficient, and do not influenced by bore diameter.
Using two bench drill machines, power is more sufficient, inside and outside two layers of drilling rod, and internal layer drilling, outer layer deslagging is not interfere with each other, outer layer spiral shell
Rotary drill bar only plays deslagging, and more traditional auger stem rotary torque reduces.
Traditional direct circulation deslagging leans on mud completely, and mud carries channel of the boring mud between drilling rod and hole wall and rises, and this
The helicla flute that utility model deslagging is formed by auger stem carries out, and mud, which only rises, cuts native lubrication, reduce helical blade abrasion and
Heat spreading function, consumption mud is few, mitigates pollution of the mud to environment, secondly, auger stem edge is in drilling while pruning hole wall
Blocked up mudcake increases pile body side friction, improves the bearing capacity of stake.
Using the augers for having screw blade, under the lubricating action of mud, boring mud is along smooth screw blade
It rises, and then enters auger stem, avoid the embarrassment that drill bit is easily buried by boring mud in drill bit drilling process, simultaneously because mud moistens
It is sliding, cohesive soil is also used.Blade strip has the cutter of gear-like, and it is more convenient to cut soil.
Detailed description of the invention
Fig. 1 is direct circulation boring rod set scheme of installation；
Fig. 2 is thin portion enlarged diagram；
Drilling rod connection figure inside and outside Fig. 3；
Fig. 4 is augers；
In attached drawing: the first drilling machine of 101-, the second drilling machine of 102-, 2- drilling cramp, 3- mud halter, 4- casing, 5- drilling rod, 6- spiral shell
Rotary drill, 7- sedimentation basin, 8- mud pit, 9- slush pump, 10- pipeline, 51- helical blade, 52- internal layer drilling rod, 53- bearing, 54-
Outer layer auger stem；61- grout outlet, 62- blade, 64- cutter.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The orientation or position of the instructions such as term " on ", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.
In compliance with the above technical solution, as shown in Figures 1 to 4, the present embodiment provides a kind of positive-circulation drilling device, including
One drilling machine 101, the second drilling machine 102, drilling cramp 2, mud halter 3, hollow drilling rod 5 and augers 6, slush pump 9 and pipeline 10.
The outlet of slush pump 9 is connected to by pipeline 10 with mud halter 3, and mud halter 3 is hollow structure, mud halter 3
It is connected to internal layer drilling rod 52, drilling rod 5 includes coaxial mounted internal layer drilling rod 52 and outer layer auger stem 54, during internal layer drilling rod 52 is
Hollow structure, 52 lower part of internal layer drilling rod is fixedly connected with augers 6, and 52 lower part of internal layer drilling rod is connected to augers 6, and internal layer bores
The power of bar 52 is provided by the second drilling machine 102, and the power of outer layer auger stem 54 is provided by the first drilling machine 101.5 upper end of drilling rod
Casing 4 is provided in drilling, 4 top of casing offers plasma discharge hole.Mud halter 3 is connected by pipeline 10 with slush pump 9, mud
Stock pump 9 is connected by pipeline with mud pit 8.Mud pit 8 is used to store mud, and sedimentation basin 7 precipitates boring mud, sedimentation basin 7, mud
Pond 8 and drilling form fluid circulation.Slush pump 9 refers in drilling process to the conveying flushing liquors such as mud or water in drilling
It is mechanical.
Referring to Fig. 2, outer layer auger stem 54 includes the blade 542 of the body of rod 541 and screw arrangement on the body of rod 541.
Referring to Fig. 3, internal layer drilling rod 52 and outer layer auger stem 54 are connected by bearing 53, internal layer drilling rod 52 and outer layer spiral
Arrange that a bearing 53, internal layer drilling rod 52 and outer layer auger stem 54 work independently, do not do mutually every 1-1.5m between drilling rod 54
It disturbs.
Referring to Fig. 4, augers 6 includes drill body 64, and drill body 64 is hollow structure, is fixed on drill body 64
There are at least two blades 62, blade 62 is screw blade, and cutter 63 is fixed on blade 62, and cutter 63 is gear or blade, knife
Tool 63 is vertical with the upper surface of blade 62, improves drilling efficiency；Grout outlet 61 is offered on augers 6.
Drilling rod 5 is fixed on workbench by drilling cramp 2, and the first drilling machine 101 and the second drilling machine 102 are fixed on workbench
On.Internal layer drilling rod 52 is mounted on the power output shaft of the second drilling machine 102, and the second drilling machine 102 is internal layer drilling rod 52 and auger
First 6 rotation and mobile power, drive internal layer drilling rod 52 and the augers 6 of providing keep internal layer drilling rod 52 defeated to underground drilling
Send mud；Outer layer auger stem 54 is mounted on the power output shaft of the first drilling machine 101, and the first drilling machine 101 is outer layer auger
Bar 54 provides power, makes 54 Auger drilling of outer drill rod and deslagging.
The device of the present embodiment when in use, assembles internal layer drilling rod 52, outer layer auger stem 54 first as shown in Figure 1:.It is interior
Layer 52 lower end of drilling rod connects augers 6, and upper end connects mud halter 3；Assembled drilling rod 5 is fixed on work by drilling cramp 2
On platform, mud halter 3 is connected by pipeline 10 with slush pump 9, and slush pump 9 is connected by pipeline 10 with mud pit 8.
The work course of the present apparatus is as follows:
Under the premise of the second drilling machine 102 provides power, internal layer drilling rod 52 drives augers 6 to carry out high-speed rotation,
First drilling machine 101 is provided under power, and outer layer auger stem 54 rotates, and slush pump 9 passes through pipeline 10 for mud while drilling
Mud in pond 8 is pressed into mud halter 3, is sprayed by drilling rod center from 6 grout outlet 61 of drill bit, mud carries boring mud along outer layer spiral shell
The helical blade 542 of rotary drill bar 54 rises, and is expelled to sedimentation basin 7, boring mud by pipeline or irrigation canals and ditches from the plasma discharge hole at 4 top of casing
It is precipitated in sedimentation basin 7, sedimentation basin 7 is connected to mud pit 8, and mud enters the recycling of mud pit 8.
Since 54 deslagging speed of outer layer auger stem is fast, deslagging speed is significantly larger than rate of penetration, therefore the first drilling machine 101
Because using the slower drilling machine of revolving speed, to reduce power.
Claims (8)
1. a kind of positive-circulation drilling device, which is characterized in that including drilling rod (5), the drilling rod (5) includes internal layer drilling rod (52),
Internal layer drilling rod (52) is supported in outer layer auger stem (54) by bearing (53), and internal layer drilling rod (52) is hollow structure, described
Internal layer drilling rod (52) is mounted on the power output end of the second drilling machine (102), and the end of internal layer drilling rod (52) is equipped with auger
Head (6), the outer layer auger stem (54) are mounted on the defeated end of power of the first drilling machine (101).
2. a kind of positive-circulation drilling device according to claim 1, which is characterized in that outer layer auger stem (54) includes bar
The blade (542) of body (541) and screw arrangement on the body of rod (541).
3. a kind of positive-circulation drilling device according to claim 1, which is characterized in that augers (6) includes drill bit sheet
Body (64), drill body (64) are hollow structure, are fixed at least two blades (62) on drill body (64), blade (62) is
Screw blade offers grout outlet (61) on drill body (64).
4. a kind of positive-circulation drilling device according to claim 3, which is characterized in that blade is fixed with cutter on (62)
(63), the cut direction of cutter (63) and blade (62) is vertical.
5. a kind of positive-circulation drilling device according to claim 1, which is characterized in that internal layer drilling rod (52) and outer layer spiral
Drilling rod (54) if between be provided with dry bearing (53), the spacing between adjacent bearing (53) be 1m~1.5m.
6. a kind of positive-circulation drilling device according to claim 1, which is characterized in that internal layer drilling rod (52) and mud halter
(3) it is connected to, mud halter (3) is connected by pipeline (10) and slush pump (9).
7. a kind of positive-circulation drilling device according to claim 1, which is characterized in that set in the drilling of drilling rod (5) upper end
It is equipped with casing (4), casing (4) top offers plasma discharge hole.
8. a kind of positive-circulation drilling device according to claim 1, which is characterized in that further include drilling cramp (2), the first drilling machine
(101), the second drilling machine (102) and mud halter (3) are installed on drilling cramp (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920107458.5U CN209523708U (en) | 2019-01-21 | 2019-01-21 | A kind of positive-circulation drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920107458.5U CN209523708U (en) | 2019-01-21 | 2019-01-21 | A kind of positive-circulation drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209523708U true CN209523708U (en) | 2019-10-22 |
Family
ID=68229853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920107458.5U Expired - Fee Related CN209523708U (en) | 2019-01-21 | 2019-01-21 | A kind of positive-circulation drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209523708U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877986A (en) * | 2020-07-01 | 2020-11-03 | 中煤科工集团西安研究院有限公司 | Coal mine underground broken soft coal seam bedding drilling rotary jet type composite drilling tool and slag discharging method |
| CN111911149A (en) * | 2020-08-31 | 2020-11-10 | 中国科学院空间应用工程与技术中心 | Separated inner rod type deep lunar soil drilling device based on bionic technology |
| CN112081544A (en) * | 2020-09-02 | 2020-12-15 | 临沂市政集团有限公司 | Pile hole slag removal equipment |
| CN113404432A (en) * | 2021-06-29 | 2021-09-17 | 山西天地王坡煤业有限公司 | Double-row slag function drilling tool |
-
2019
- 2019-01-21 CN CN201920107458.5U patent/CN209523708U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877986A (en) * | 2020-07-01 | 2020-11-03 | 中煤科工集团西安研究院有限公司 | Coal mine underground broken soft coal seam bedding drilling rotary jet type composite drilling tool and slag discharging method |
| CN111877986B (en) * | 2020-07-01 | 2022-03-15 | 中煤科工集团西安研究院有限公司 | Coal mine underground broken soft coal seam bedding drilling rotary jet type composite drilling tool and slag discharging method |
| CN111911149A (en) * | 2020-08-31 | 2020-11-10 | 中国科学院空间应用工程与技术中心 | Separated inner rod type deep lunar soil drilling device based on bionic technology |
| CN111911149B (en) * | 2020-08-31 | 2021-08-24 | 中国科学院空间应用工程与技术中心 | Separated inner rod type deep lunar soil drilling device based on bionic technology |
| CN112081544A (en) * | 2020-09-02 | 2020-12-15 | 临沂市政集团有限公司 | Pile hole slag removal equipment |
| CN113404432A (en) * | 2021-06-29 | 2021-09-17 | 山西天地王坡煤业有限公司 | Double-row slag function drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191022 Termination date: 20210121 |