CN112813968A - Drilling tool capable of changing stirring angle - Google Patents
Drilling tool capable of changing stirring angle Download PDFInfo
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- CN112813968A CN112813968A CN202110282802.6A CN202110282802A CN112813968A CN 112813968 A CN112813968 A CN 112813968A CN 202110282802 A CN202110282802 A CN 202110282802A CN 112813968 A CN112813968 A CN 112813968A
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- drilling tool
- stirring
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A drilling tool with a changeable stirring angle comprises a drilling tool body with a male joint, a lower slurry spraying port, a second built-in pipeline and a gas spraying port, a plurality of groups of first stirring blades and cutting blades, wherein three male plate through holes of the male joint are symmetrically arranged in an equilateral triangle manner in the radial direction of a male fixing plate; the second built-in pipeline is erected in the inner cavity of the drilling tool pipe body through a plurality of second pipelines; the plurality of groups of first stirring blades are symmetrically arranged on the outer wall of the drilling tool pipe body at intervals from top to bottom, and each group of first stirring blades are arranged on the outer wall of the drilling tool pipe body in a mode of crossing up and down and being at intervals; the included angle delta 1 between the first blade seat and the axial center line of the drilling tool pipe body is = 45-55 degrees. The invention adapts to different geological conditions to change the angle of the stirring blade, ensures that the surrounding soil body is sprayed with slurry at different stages when the drill rod is drilled downwards and lifted upwards so as to promote the sufficient stirring of the surrounding soil body and the cement slurry, achieves the upper and lower homogeneity and the consistent strength of the pile body, effectively shortens the construction period and saves the construction cost.
Description
Technical Field
The invention relates to a drilling tool capable of changing a stirring angle, in particular to a cement mixing pile drilling machine for underground water-stop curtain wall construction, foundation pit excavation and enclosure, dam seepage-proofing treatment and foundation reinforcement improvement.
Background
At present, a cement mixing pile construction process is widely adopted in industrial construction and urban construction foundation construction, and a cement paste curing agent is sprayed from the front end of a drill bit through a special multi-shaft mixing soil drilling machine in the drilling and lifting processes of a drill rod and is forcibly mixed with loose soil, gravel and curing agent to construct a cement mixing reinforced foundation with integrity, water stability and certain strength. A large number of construction cases show that the internal homogeneity of the pile body is greatly different from top to bottom in the forming process, and the quality condition of the upper pile body of the cement-soil mixing pile is better than that of the lower pile body of the cement-soil mixing pile.
The cement soil mixing pile drilling machine in the prior art generally adopts a drill bit bottom guniting and air injection mode, and along with the continuous increase of the drilling depth, because the soil body confining pressure received by the drill bit is large, the slurry injection resistance is large, so that the cement slurry in the surrounding soil is insufficient, the uniform mixing of the cement slurry and the soil body is difficult to guarantee, and the homogeneity performance of a pile body is influenced. In order to improve the upper and lower homogeneity of the pile body after the cement soil mixing pile is drilled and mixed, ensure the upper and lower quality consistency of the pile body and improve the vertical precision requirement of the wall body after the pile is formed, necessary technical improvement needs to be carried out on the drill rod and the drill bit structure, a multi-channel pipeline is arranged in the drill rod and the drill bit inner cavity of the drill rod to ensure that the mud is sprayed and jetted to the surrounding soil body simultaneously in the mixing process, and the mud is sprayed to the surrounding soil body at different stages when the drill rod and the drill bit of the drill rod are drilled and lifted so as to promote the component mixing of the surrounding. When different conditions occur in geological and stratum conditions, the stirring angle of a drilling tool of a stirring pile drilling machine needs to be changed, further sufficient stirring of surrounding soil and cement paste is promoted, the up-and-down homogeneity of the wall body after the stirring pile is formed is ensured to be consistent, the quality requirement of the wall body is met, the construction efficiency is effectively improved, and the engineering cost of the stirring pile is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the existing stirring drilling machine and provide a drilling tool with a variable stirring angle, wherein mounting seats with different angles are arranged on the rod body of the existing drilling tool, so that the switching installation of different stirring blade angles can be conveniently carried out, the stirring requirement of the drilling tool under different stratum conditions can be further met, the drilling tool and the drilling tool thereof can be effectively sprayed to the surrounding soil body at different stages during the drilling and lifting, the sufficient stirring of the surrounding soil body and cement paste can be promoted, the pile body strength of the stirring pile drilling machine after pile forming is consistent from top to bottom, the construction period can be effectively shortened, and the construction cost can be effectively saved.
The invention is realized by the following technical scheme:
a drilling tool capable of changing a stirring angle, comprising: drilling tool body, the first stirring leaf of multiunit and cutting blade with male joint, lower guniting mouth, the built-in pipeline of second and air jet, wherein:
the male connector comprises a male fixing plate which is positioned on the upper end surface and is provided with a male plate through hole;
the second built-in pipeline comprises a third pulp pipe, a second air pipe and a plurality of second pipeline frames;
each group of first stirring blades comprises a first blade and a first blade seat;
the method is characterized in that:
three male plate through holes of a male fixing plate of the male connector of the drilling tool pipe body are arranged in an equilateral triangle symmetrical mode in the radial direction of the male fixing plate;
the lower guniting port is arranged at the bottom end of the outer wall of the drilling tool pipe body;
the air jet is arranged at the bottom of the drilling tool pipe body;
the second built-in pipeline is erected in the inner cavity of the drilling tool pipe body through a plurality of second pipelines; the second pipeline frame is provided with three second pipe frame through holes which are symmetrically arranged in an equilateral triangle manner in the radial direction; a third slurry pipe and a second air pipe of the second built-in pipeline respectively penetrate through two second pipe frame through holes of the plurality of second pipeline frames and are fixed in the inner cavity of the stirring drilling tool; the upper ends of the third slurry pipe and the second air pipe are respectively arranged in the two male plate through holes of the male fixing plate and then are welded and fixed, and the male fixing plate is welded and fixed on the end surface of the male joint; the lower end of the third slurry pipe is connected with a lower slurry spraying port through a lower bent slurry pipe;
the multiple groups of first stirring blades are symmetrically arranged on the outer wall of the drilling tool pipe body in an up-down interval crossing manner; the first blades of each group of first stirring blades are arranged on the first blade seat through pin shafts; the first blade seat is obliquely arranged on the outer wall of the drilling tool pipe body, and the included angle delta 1 between the first blade seat and the axial center line of the drilling tool pipe body ranges from 45 degrees to 55 degrees;
the cutting blades are symmetrically arranged on the outer wall of the bottom of the drilling tool pipe body.
The perpendicularity deviation between the outer end face of the male fixing plate of the male connector and the axial center line of the drilling tool pipe body is less than or equal to 0.08-0.10 mm.
The plurality of groups of second stirring blades are crossed at intervals up and down and are symmetrically arranged on the outer wall of the drilling tool pipe body in a mode of staggering 90-degree included angles with the plurality of groups of first stirring blades in the horizontal section direction, and each group of second stirring blades comprises a second blade and a second blade seat; the first blades of each group of second stirring blades are arranged on the second blade seats through pin shafts; the second blade seat is obliquely arranged on the outer wall of the drilling tool pipe body, and the included angle delta 2 between the second blade seat and the axial center line of the drilling tool pipe body ranges from 34 degrees to 44 degrees.
Drawings
FIG. 1 is a schematic view of the construction of a drilling tool with variable stirring angle according to the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a bottom view of FIG. 1;
FIG. 5 is a sectional view taken along line H-H in FIG. 3;
FIG. 6 is a sectional view taken along line J-J of FIG. 2;
fig. 7 is a partial enlarged view of the portion S in fig. 3.
Detailed Description
The drilling tool with variable stirring angle of the present invention will be further described with reference to the accompanying drawings.
Example 1:
a drilling tool capable of changing a stirring angle, comprising: a drill pipe body 608 having a male connector 101, a lower slurry port 603, a second built-in conduit 605 and an air port 609, a plurality of sets of first stirring blades 606 and cutting blades 607, wherein:
the male connector 101 includes a male fixing plate 1011 having a male through-hole 1012 on an upper end surface thereof;
the second built-in piping 605 includes a third slurry pipe 6052, a second gas pipe 6053, and a plurality of second piping racks 6054;
each set of first stirring blades 606 comprises a first blade 6061 and a first blade seat 6062;
the method is characterized in that:
three male plate through holes 1012 of the male fixing plate 1011 of the male connector 101 of the drill pipe body 608 are arranged in an equilateral triangle symmetrical manner in the radial direction of the male fixing plate 1011;
the lower grout port 603 is arranged at the bottom end of the outer wall of the drilling tool pipe body 608;
the gas injection ports 609 are arranged at the bottom of the drilling tool pipe body 608;
the second built-in conduit 605 is disposed in the inner cavity of the drill pipe body 608 via a plurality of second conduit holders 6054; the second pipe frame 6054 is provided with three second pipe frame through holes 60541 which are symmetrically arranged in an equilateral triangle manner in the radial direction; the third slurry pipe 6052 and the second air pipe 6053 of the second built-in pipeline 605 respectively pass through two second pipe rack through holes 60541 of a plurality of second pipeline racks 6054 and are fixed in the inner cavity of the stirring drilling tool 60; the upper ends of the third slurry pipe 6052 and the second air pipe 6053 are respectively arranged in the two male plate through holes 1012 of the male fixing plate 1011 and then are welded and fixed, and the male fixing plate is welded and fixed on the end surface of the male connector 101; the lower end of the third slurry pipe 6052 is connected with a lower slurry spraying port 603 through a lower slurry bending pipe 60521, and the lower end of the second air pipe 6053 is connected with an air spraying port 609;
the multiple groups of first stirring blades 606 are symmetrically arranged on the outer wall of the drilling tool pipe body 608 in an up-down interval crossing manner; the first blades 6061 of each group of first stirring blades 606 are mounted on the first blade seat 6062 through a pin shaft; the first blade seat 6062 is obliquely arranged on the outer wall of the drill pipe body 608, and the included angle δ 1 between the first blade seat 6062 and the axial center line of the drill pipe body 608 is =45 ° -55 °;
the cutting blades 607 are symmetrically arranged on the bottom outer wall of the drill pipe body 608.
The verticality deviation between the outer end surface of the male fixing plate 1011 of the male connector 101 and the axial center line of the drilling tool pipe body 608 is less than or equal to 0.08-0.10 mm. Therefore, when the drilling tool is in butt joint with an external drilling rod from the upper part, the sealing gasket between the male joint of the drilling tool and the female joint of the external drilling rod is effectively ensured to be stressed uniformly and effectively sealed, the problems of slurry mixing and gas mixing are avoided, the drilling tool is favorably communicated with a slurry pipe and a gas pipe arranged in the inner cavity of the external drilling rod, and the stable and reliable work of the stirring pile drilling machine is ensured.
When the drilling tool is in butt joint with an external drill rod, the male joint 101 of the drilling tool pipe body 608 enters the female joint 102 of the external drill rod, a sealing gasket is arranged between the male joint and the female joint, the third grout pipe 6052 and the second air pipe 6053 of the second built-in pipeline 605 are respectively communicated with the corresponding grout pipe and air pipe of the external drill rod, and the female joint of the external drill rod and the male joint 101 of the drilling tool pipe body 60 are locked through an external pin shaft to complete the butt joint between the female joint and the male joint. When the drilling tool drills downwards, drills and lifts and stirs, an operator can control the grout spraying port and the grout spraying port at the external drill bit connected with the lower part of the grout spraying port to spray grout up and down simultaneously through a construction control system of the stirring pile drilling machine, and jet compressed air through the air jet port at the external drill bit, so that the drill rod, soil around the drill bit and cement grout are fully and uniformly stirred, the integral homogeneity and strength of a pile body are consistent up and down, and the construction quality of the stirring pile is greatly improved.
The drilling tool with the changeable stirring angle can realize the guniting to the surrounding soil body in different stages when the drill rod of the stirring pile drilling machine and the drilling tool thereof drill downwards and lift upwards, and the stirring blades effectively promote the sufficient stirring of the surrounding soil body and cement paste, so that the homogeneity and the strength of the pile body after the stirring pile forming are kept consistent from top to bottom, the construction quality and the engineering progress of the stirring pile are effectively improved, the construction efficiency is improved, and the construction cost is reduced.
Example 2:
unlike embodiment 1, when the angle of the drill stirring blade needs to be changed, the sets of first stirring blades 606 on the outer wall of the drill pipe 608 can be removed, and the sets of second stirring blades 606' can be reinstalled. The multiple groups of second stirring blades 606 'are crossed at intervals up and down and are symmetrically arranged on the outer wall of the drilling tool pipe body 608 with the multiple groups of first stirring blades 606 in a mode that the included angles of the multiple groups of second stirring blades and the horizontal section direction are staggered by 90 degrees, and each group of second stirring blades 606' comprises a second blade 6061 'and a second blade seat 6062'; the first blades 6061 ' of each group of second stirring blades 606 ' are mounted on the second blade seats 6062 ' through pin shafts; the second vane seats 6062' are disposed on the outer wall of the drill tube 608 in an angled manner at an angle δ 2=34 ° -44 ° to the axial centerline of the drill tube 608. Therefore, the existing drilling tool pipe body can be fully utilized, the multiple groups of first stirring blades 606 are disassembled, the multiple groups of second stirring blades 606' are conveniently installed, the conversion of the stirring angles of the stirring blades on the drilling tool is completed, the drilling and stirring construction of the stirring pile drilling machine under different stratum conditions is adapted, the stirring blades are ensured to effectively promote the sufficient stirring of the surrounding soil body and cement paste, and the pile body is uniform in upper and lower parts and consistent in strength after the pile is formed by stirring. In addition, the use requirements of two different stirring angles of one drilling tool are met, the equipment purchase cost is effectively reduced, and the equipment utilization rate is improved.
Various changes and modifications may be made without departing from the general inventive concept, but they are within the scope of the present invention as long as they are equivalent or similar to the present invention.
Claims (3)
1. A drilling tool capable of changing a stirring angle, comprising: a drill pipe body (608) having a male connector (101), a lower slurry injection port (603), a second built-in pipe (605) and an air injection port (609), a plurality of sets of first stirring blades (606) and cutting blades (607), wherein:
the male connector (101) comprises a male fixing plate (1011) which is positioned on the upper end surface and is provided with a male plate through hole (1012);
the second built-in pipeline (605) comprises a third slurry pipe (6052), a second air pipe (6053) and a plurality of second pipeline racks (6054);
each group of first stirring blades (606) comprises a first blade (6061) and a first blade seat (6062);
the method is characterized in that:
three male plate through holes (1012) of a male fixing plate (1011) of a male connector (101) of the drilling tool pipe body (608) are arranged, and the three male plate through holes are symmetrically arranged in an equilateral triangle manner in the radial direction of the male fixing plate (1011);
the lower grout spraying port (603) is arranged at the bottom end of the outer wall of the drilling tool pipe body (608);
the gas nozzle (609) is arranged at the bottom of the drilling tool pipe body (608);
the second built-in pipeline (605) is arranged in the inner cavity of the drilling tool pipe body (608) through a plurality of second pipeline brackets (6054); the second pipeline frame (6054) is provided with three second pipe frame through holes (60541) which are symmetrically arranged in an equilateral triangle manner in the radial direction; a third slurry pipe (6052) and a second air pipe (6053) of the second built-in pipeline (605) respectively penetrate through two second pipe frame through holes (60541) of a plurality of second pipeline frames (6054) and are fixed in the inner cavity of the stirring drilling tool (60); the upper ends of the third slurry pipe (6052) and the second air pipe (6053) are respectively arranged in the two male plate through holes (1012) of the male fixing plate (1011) and then are welded and fixed, and the male fixing plate is welded and fixed on the end surface of the male connector (101); the lower end of the third slurry pipe (6052) is connected with a lower slurry spraying port (603) through a lower slurry bending pipe (60521), and the lower end of the second air pipe (6053) is connected with an air spraying port (609);
the multiple groups of first stirring blades (606) are symmetrically arranged on the outer wall of the drilling tool pipe body (608) in an up-down interval crossing mode; the first blades (6061) of each group of first stirring blades (606) are arranged on a first blade seat (6062) through pin shafts; the first blade seat (6062) is obliquely arranged on the outer wall of the drilling tool pipe body (608), and the included angle delta 1 between the first blade seat and the axial center line of the drilling tool pipe body (608) is 45-55 degrees;
the cutting blades (607) are symmetrically arranged on the outer wall of the bottom of the drilling tool tube body (608).
2. The drilling tool with variable stirring angle according to claim 1, wherein the outer end surface of the male fixing plate (1011) of the male connector (101) has a verticality deviation with the axial center line of the drilling tool pipe body (608) of 0.08-0.10mm or less.
3. The drilling tool with variable stirring angles according to claim 1, wherein the multiple groups of second stirring blades (606 ') are crossed at intervals up and down and symmetrically arranged on the outer wall of the drilling tool pipe body (608) in a way of being staggered from the multiple groups of first stirring blades (606) by an included angle of 90 degrees in the horizontal cross section direction, and each group of second stirring blades (606') comprises a second blade (6061 ') and a second blade seat (6062'); the first blades (6061 ') of each group of second stirring blades (606 ') are arranged on the second blade seats (6062 ') through pin shafts; the second vane seat (6062') is arranged on the outer wall of the drill pipe body (608) in an oblique mode, and the included angle delta 2 of the second vane seat and the axial center line of the drill pipe body (608) is larger than 34 degrees to 44 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282802.6A CN112813968A (en) | 2021-03-16 | 2021-03-16 | Drilling tool capable of changing stirring angle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282802.6A CN112813968A (en) | 2021-03-16 | 2021-03-16 | Drilling tool capable of changing stirring angle |
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| CN112813968A true CN112813968A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110282802.6A Pending CN112813968A (en) | 2021-03-16 | 2021-03-16 | Drilling tool capable of changing stirring angle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046136A (en) * | 2021-12-01 | 2022-02-15 | 上海工程机械厂有限公司 | Stirring drilling tool with differential blades |
-
2021
- 2021-03-16 CN CN202110282802.6A patent/CN112813968A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046136A (en) * | 2021-12-01 | 2022-02-15 | 上海工程机械厂有限公司 | Stirring drilling tool with differential blades |
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