CN208220632U - A kind of assembly type drilling tool - Google Patents
A kind of assembly type drilling tool Download PDFInfo
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- CN208220632U CN208220632U CN201820227903.7U CN201820227903U CN208220632U CN 208220632 U CN208220632 U CN 208220632U CN 201820227903 U CN201820227903 U CN 201820227903U CN 208220632 U CN208220632 U CN 208220632U
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Abstract
The utility model discloses a kind of assembly type drilling tools, including a drill bit fission drilling tool (1), the squeezed seperated drilling tool of at least one and at least one are without spiral fission drilling tool (7)；The drill bit fission drilling tool (1) and the core bar outer diameter without spiral fission drilling tool (7) are equal diameter or variable diameters；The top of the drill bit fission drilling tool (1) is six side's quick couplings in hollow；The squeezed seperated drilling tool and without being six side's quick couplings in hollow at the top of spiral fission drilling tool (7)；The squeezed seperated drilling tool and the bottom without spiral fission drilling tool (7) are hollow outer six side's quick couplings；All seperated drilling tools are connected by hollow six sides quick coupling.The assembly type drilling tool of the utility model is according to ground geological conditions and engine request, it can be by multiple seperated drilling tool Optional assemblings at the assembly type drilling tool for the optimum pattern for being suitable for different engineering methods, it is deeper to bore deep and bigger bearing capacity of single pile so as to realize thicker brill diameter.
Description
Technical field
The utility model relates to filling pile constructions, more particularly to a kind of bored concrete pile applied to civil construction project field
Construction drilling tool.
Background technique
In civil construction project field, modern concrete bored concrete pile is classified as according to the different form of construction drilling tool
Using the long screw auger drilling deposited pile of long spire drilling tool, with the short spiral extrusion soil filling pile using short helix extruding-enlarging drilling tool.This two
The construction drilling tool and construction method that kind bored concrete pile uses are entirely different, and also difference is huge for the pile-forming effect of generation.Wherein, long spire
The soil body in stake holes can be all discharged to earth's surface in the construction process by cast-in-situ bored pile；And short spiral extrusion soil filling pile then can
The soil body in stake holes is wholly or largely expressed in stake holes surrounding soil.By the bored pile for comparing above two pile-type
Mechanism is it is found that the technology of short spiral extrusion soil filling pile, cost, environment-friendly advantage are extremely obvious.
Currently, both at home and abroad during Concrete Grouting Pale, generally existing following problems:
(1) it uses integral type drilling tool: will lead to a kind of drilling tool and need to cope with a variety of different strata conditions, this is often difficult to
It is competent at short spiral extrusion soil filling pile construction；The method remedied usually requires to back up a fairly large number of different types of drilling tool；This compels
Make the design standard and performance requirement that improve drilling tool, increase the cost of integral type drilling tool, improves construction cost, while stratum is applied
Range is but greatly limited.In addition, each Construction of Engineering Projects scene generally requires to be equipped at least two sets of similar drilling tools to ensure work
Phase, this equipment cost for also resulting in construction party greatly increase.
(2) using single formula construction method: the otherness of formation condition is ignored, using integral type drilling tool similarly to construct
Method is constructed, although cope with it is soft modeling, it is slightly close or in thickly layer short spiral extrusion soil filling pile construction；But in face of closely knit
When sand, gumbo or full strong-weathered rock stratum, it is but often unable to complete the bore operation of short spiral extrusion soil filling pile.
To solve above-mentioned technical problem, needing to find a kind of can be suitble to the short spiral soil compaction of DIFFERENT SOIL formation condition to fill
Note pile construction method and cost performance are more preferably constructed drilling tool.
Utility model content
The purpose of this utility model is to provide a kind of assembly type drilling tools.
The short spiral extrusion soil filling pile combined type construction method that the way-type drilling unit of the utility model is applicable in is different from the country
Outer existing single formula construction method, the combined type construction method are composed of two parts construction method.Implementing short spiral
In extrusion soil filling pile base engineering construction, first have to be determined according to the hard compaction rate on ground stratum using combined type construction party
Corresponding engineering method in method.The Performance criteria of the hard compaction rate in ground stratum using Standard piercing in-situ test blow counts N value come
Determine: when N < 30~35 is hit, it is as slightly close, in close silt, sand or it is soft modeling, plastic cohesive soil when, using engineering method 1.Work as N
When > 30~35 is hit, when as closely knit silt, sand or hard plastic, hard cohesive soil and full strong-weathered rock, using engineering method 2.
Engineering method 1 and engineering method 2 use different assembly type drilling tools, are different from existing integral type drilling tool, separately below plus
To illustrate.
A kind of assembly type drilling tool, including the squeezed seperated drilling tool of a drill bit fission drilling tool, at least one and at least one without
Spiral fission drilling tool.
Assembly type drilling tool described in the utility model, wherein the drill bit fission drilling tool and the core without spiral fission drilling tool
Bar outer diameter is equal diameter or variable diameters.Preferably equal diameter.
Assembly type drilling tool described in the utility model, wherein the external spiral of the drill bit fission drilling tool is uniform pitch or change
Screw pitch；Preferably uniform pitch.The external spiral of the squeezed seperated drilling tool is uniform pitch or varying pitch；Preferably uniform pitch.It is all
The screw pitch of seperated drilling tool with external spiral is equal or unequal；Preferably screw pitch is equal.
Assembly type drilling tool described in the utility model, wherein all external spiral diameters of seperated drilling tool etc. with external spiral
In the pile diameter of design.
Assembly type drilling tool described in the utility model, wherein the top of the drill bit fission drilling tool is that six sides are fast in hollow
Quick coupling；The squeezed seperated drilling tool and without being six side's quick couplings in hollow at the top of spiral fission drilling tool；It is described squeezed
Seperated drilling tool and bottom without spiral fission drilling tool are hollow outer six side's quick couplings；All seperated drilling tools pass through hollow six
Square quick coupling connects.
Assembly type drilling tool described in the utility model, wherein the outer spiral shell of the drill bit fission drilling tool and squeezed seperated drilling tool
Rotation is left-handed.
Assembly type drilling tool described in the utility model, wherein the squeezed seperated drilling tool is squeezed seperated drilling tool A, squeezed
At least one of the seperated drilling tool C of seperated drilling tool B or squeezed.
Assembly type drilling tool described in the utility model, wherein under the squeezed fission drilling tool A and squeezed seperated drilling tool B
Portion is the hollow cone cylinder body with sinistral external thread, and the outer diameter of the hollow cone cylinder body is gradually increased from the bottom to top；
The top of the squeezed seperated drilling tool A is isodiametric hollow cylindrical extruding expanding body X；The squeezed seperated drilling tool B
Top be isodiametric hollow cylindrical extruding expanding body Y；
The lower part of the squeezed seperated drilling tool C is left-handed drilling rod, and top is periphery wall with the squeezed of oblique soil discharge channel
Body Z.
Assembly type drilling tool described in the utility model, wherein the bored concrete pile that the diameter of the extruding expanding body X is equal to design is straight
Diameter；The diameter of the extruding expanding body Y is less than the pile diameter of design, and is greater than the core bar diameter of drilling tool below；It is described to squeeze
The diameter for expanding body Z is less than or equal to the pile diameter of design.
Assembly type drilling tool described in the utility model, wherein the oblique soil discharge channel is uniformly distributed circumferentially, inclination
The angle of direction and drilling tool central axis is 5~15 °；Preferably 10 °.The quantity of the oblique soil discharge channel is 5~15；Phase
Oblique fin is equipped between adjacent two oblique soil discharge channels；The width of the oblique soil discharge channel is the 3~6 of oblique fin width
Times, preferably 4 times.
Any assembly type drilling tool of the utility model, wherein further include at least one dextrorotation fission drilling tool or a left side
Revolve seperated drilling tool.
Assembly type drilling tool described in the utility model, wherein the outer spiral shell of the dextrorotation fission drilling tool and left-handed seperated drilling tool
Rotation diameter is equal to the pile diameter of design；The external spiral of the dextrorotation fission drilling tool and left-handed seperated drilling tool be uniform pitch or
Varying pitch；Preferably uniform pitch.The screw pitch of all seperated drilling tools with external spiral is equal or unequal；Preferably screw pitch is equal.
More specifically, a kind of assembly type drilling tool described in the utility model, from bottom to up by a drill bit fission drilling tool,
A piece squeezed seperated drilling tool A, a dextrorotation fission drilling tool and several are connected in sequence without spiral fission drilling tool；
The drill bit fission drilling tool, dextrorotation fission drilling tool and the core bar outer diameter without spiral fission drilling tool are equal diameter；Often
A seperated drilling tool with external spiral is uniform pitch；The screw pitch of all seperated drilling tools with external spiral is equal；Outside all bands
The external spiral diameter of the seperated drilling tool of spiral is equal to the pile diameter of design；
All seperated drilling tools are connected by hollow six sides quick coupling；
The lower part of the squeezed seperated drilling tool A is the hollow cone cylinder body with sinistral external thread, the hollow cone cylinder body
Outer diameter is gradually increased from the bottom to top；The top of the squeezed seperated drilling tool A is isodiametric hollow cylindrical extruding expanding body X；It is described
The diameter of extruding expanding body X is equal to the pile diameter of design.As the Standard piercing blow counts N < 30~35 that geology exploration report provides
Engineering method 1 is used when hitting, that is, the assembly type drilling tool can be used and construct.
Alternatively, the dextrorotation fission drilling tool replaces with several left-handed fissions being sequentially connected in above-mentioned assembly type drilling tool
Drilling tool.When the Standard piercing blow counts N < 30~35 that geology exploration report provides is hit using engineering method 1, the assembling can also be used
Formula drilling tool is constructed.
Alternatively, another assembly type drilling tool described in the utility model, squeezed fission drilling tool A are replaced with from bottom to up successively
The squeezed fission drilling tool B of a connected one and squeezed seperated drilling tool C；
The lower part of squeezed fission drilling tool B is the hollow cone cylinder body with sinistral external thread, the outer diameter of the hollow cone cylinder body
It is gradually increased from the bottom to top；The top of the squeezed seperated drilling tool B is isodiametric hollow cylindrical extruding expanding body Y, and is greater than it
The core bar diameter of the drilling tool of lower section；The diameter of the extruding expanding body Y is less than the pile diameter of design；
The lower part of squeezed fission drilling tool C is left-handed drilling rod, and top is the extruding expanding body Z that periphery wall has oblique soil discharge channel；
The diameter of the extruding expanding body Z is less than or equal to the pile diameter of design；The oblique soil discharge channel is uniformly distributed circumferentially,
The angle of inclined direction and drilling tool central axis is 5~15 °；The quantity of the oblique soil discharge channel is 5~15；It is two neighboring
Oblique fin is equipped between oblique soil discharge channel；The width of the oblique soil discharge channel is 3~6 times of oblique fin width.When
The Standard piercing blow counts N > 30~35 that geological mapping report provides when hitting using engineering method 2, that is, can be used the assembly type drilling tool into
Row construction.
Alternatively, dextrorotation fission drilling tool replaces with several left-handed seperated drilling tools being sequentially connected in above-mentioned assembly type drilling tool.
When the Standard piercing blow counts N > 30~35 that geology exploration report provides is hit using engineering method 2, the assembly type drilling tool can also be used
It constructs.
Again alternatively, in above-mentioned assembly type drilling tool, several are connected between squeezed fission drilling tool B and squeezed seperated drilling tool C
The left-handed seperated drilling tool being sequentially connected.When the Standard piercing blow counts N > 30~35 that geology exploration report provides is hit using work
Method 2 can also be used the assembly type drilling tool and construct.
Alternatively, another assembly type drilling tool described in the utility model, squeezed fission drilling tool A replaces with a squeezed fission
Drilling tool C；
The lower part of squeezed fission drilling tool C is left-handed drilling rod, and top is the extruding expanding body Z that periphery wall has oblique soil discharge channel；
The diameter of extruding expanding body Z is less than or equal to the pile diameter of design；Oblique soil discharge channel is uniformly distributed circumferentially, inclined direction
Angle with drilling tool central axis is 5~15 °；The quantity of the oblique soil discharge channel is 5~15；Two neighboring oblique casting
Oblique fin is equipped between channel；The width of the oblique soil discharge channel is 3~6 times of oblique fin width.
Alternatively, dextrorotation fission drilling tool replaces with several left-handed seperated drilling tools being sequentially connected in above-mentioned assembly type drilling tool.
Compared with the existing technology, the protrusion effect of the utility model is:
(1) the utility model is used for the assembly type drilling tool of short spiral extrusion soil filling pile combined type construction method, with existing skill
The short augers design structure of the integral type of art is entirely different, can be by multiple according to ground geological conditions and engine request
Seperated drilling tool Optional assembling is bored at the assembly type for the optimum pattern for being suitable for combined type construction method 1 or combined type construction method 2
Tool, it is deeper to bore deep and bigger bearing capacity of single pile so as to realize thicker brill diameter.The assembly type drilling tool of the utility model
It is extensive to be applicable in stratum, pile work efficiency is high, greatlys save drilling tool cost.
(2) combined type construction method for using engineering method 1+ engineering method 2, passes through the divisions of different geological conditions and different assembly types
The application of drilling tool can increase substantially the construction efficiency of short spiral extrusion soil filling pile；Simultaneously also by short spiral extrusion soil filling pile
Ground stratum range of applicability is expanded to hard closely knit ground stratum N > 30~35 from N < 30~35, or even can be used for N value and be
60 or more stratum, to significantly expand the ground stratum use scope of the short spiral extrusion soil filling pile of the prior art.
Explanation and specific embodiment are described further the assembly type drilling tool of the utility model with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of drill bit fission drilling tool；
Fig. 2 is the structural schematic diagram of squeezed seperated drilling tool A；
Fig. 3 is the structural schematic diagram of squeezed seperated drilling tool B；
Fig. 4 is the structural schematic diagram of squeezed seperated drilling tool C；
Fig. 5 is the structural schematic diagram of dextrorotation fission drilling tool；
Fig. 6 is the structural schematic diagram of left-handed seperated drilling tool；
Fig. 7 for no spiral fission drilling tool structural schematic diagram；
Fig. 8 is the cross-sectional view of extruding expanding body Z in squeezed seperated drilling tool C；
Fig. 9 is a kind of connected mode schematic diagram of assembly type drilling tool 1.；
Figure 10 is a kind of connected mode schematic diagram of assembly type drilling tool 2.；
Figure 11 is another connected mode schematic diagram of assembly type drilling tool 2.；
Figure 12 is the construction process schematic diagram of engineering method 1 in short spiral extrusion soil filling pile combined type construction method；
Figure 13 is the construction process schematic diagram of engineering method 2 in short spiral extrusion soil filling pile combined type construction method.
Specific embodiment
Embodiment 1
Assembly type drilling tool is formed by 7 kinds of seperated drilling tool any combination.
As shown in figs. 1-7,7 kinds of seperated drilling tools are respectively as follows: drill bit fission drilling tool 1, squeezed seperated drilling tool A2, squeezed seperated brill
Have B3, squeezed seperated drilling tool C4, dextrorotation fission drilling tool 5, left-handed seperated drilling tool 6 and without spiral fission drilling tool 7.
1 bottom of drill bit fission drilling tool is equipped with apex point 11 and pick 12, and top is six side's quick couplings in hollow.
The lower part of squeezed fission drilling tool A2 is the hollow cone cylinder body 21 with sinistral external thread, the outer diameter of hollow cone cylinder body by
Under supreme be gradually increased；The top of squeezed fission drilling tool A2 is isodiametric hollow cylindrical extruding expanding body X22；Extruding expanding body X's is straight
Diameter is equal to the pile diameter of design；Top is six side's quick couplings in hollow；Bottom is hollow outer six side's quick couplings.
The lower part of squeezed fission drilling tool B3 is the hollow cone cylinder body 31 with sinistral external thread, the outer diameter of hollow cone cylinder body by
Under supreme be gradually increased；The top of squeezed fission drilling tool B3 is isodiametric hollow cylindrical extruding expanding body Y32；Extruding expanding body Y32's
Diameter is less than the pile diameter of design, and is greater than the core bar diameter of drilling tool below；Top is the fast quick access of six sides in hollow
Head；Bottom is hollow outer six side's quick couplings.
The lower part of squeezed fission drilling tool C4 is left-handed drilling rod 41, and top is periphery wall squeezing with oblique soil discharge channel 422
Expand body Z42；The diameter of extruding expanding body Z42 is less than or equal to the pile diameter of design；Oblique soil discharge channel 422 is circumferentially uniformly divided
The angle of cloth, inclined direction and drilling tool central axis is 10 °；The quantity of oblique soil discharge channel 422 is 8；It is two neighboring oblique
To between soil discharge channel 422 be equipped with oblique fin 421；The width of oblique soil discharge channel 422 is 4 times of oblique 421 width of fin；
Top is six side's quick couplings in hollow；Bottom is hollow outer six side's quick couplings.In other variant embodiments, oblique row
Native channel 422 and the angle of drilling tool central axis may be 5-15 °, and the quantity of oblique soil discharge channel 422 may be 5-15
A, the width of oblique soil discharge channel 422 may be 3-6 times of oblique 421 width of fin.
The external spiral diameter of dextrorotation fission drilling tool 5 is equal to the pile diameter of design；Top is the fast quick access of six sides in hollow
Head；Bottom is hollow outer six side's quick couplings.
The external spiral diameter of left-handed fission drilling tool 6 is equal to the pile diameter of design；Top is the fast quick access of six sides in hollow
Head；Bottom is hollow outer six side's quick couplings.
No spiral fission drilling tool 7 is hollow drill pipe, and drilling rod core bar outer diameter is less than the pile diameter of design；During top is
Six side's quick coupling in sky；Bottom is hollow outer six side's quick couplings.
Above-mentioned all seperated drilling tools, drill bit fission drilling tool 1, dextrorotation fission drilling tool 5, left-handed seperated drilling tool 6 and without spiral
The core bar outer diameter of seperated drilling tool 7 is equal diameter；Each seperated drilling tool with external spiral is uniform pitch；All band external spirals
The screw pitch of seperated drilling tool be equal；The bored concrete pile that the external spiral diameter of all seperated drilling tools with external spiral is equal to design is straight
Diameter.In other variant embodiments, the core bar that may be designed in any seperated drilling tool is variable diameters, any to have external spiral
Seperated drilling tool be varying pitch；The screw pitch of seperated drilling tool of any two with external spiral is unequal.
Assembly type drilling tool is 1.:
1st kind of combining form, as shown in figure 9, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool
A2, a dextrorotation fission drilling tool 5 and several are connected in sequence without spiral fission drilling tool 7.
2nd kind of combining form, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool A2, one it is left-handed
Seperated drilling tool 6 and several are connected in sequence without spiral fission drilling tool 7.
3rd kind of combining form, from bottom to up by one drill bit fission drilling tool 1, one squeezed fission drilling tool A2 and several
No spiral fission drilling tool 7 is connected in sequence.
Assembly type drilling tool is 2.:
1st kind of combining form, as shown in Figure 10, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool
B3, a squeezed seperated drilling tool C4, a dextrorotation fission drilling tool 5 and several are connected in sequence without spiral fission drilling tool 7.
2nd kind of combining form, as shown in figure 11, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool
B3, a squeezed seperated drilling tool C4, a left-handed seperated drilling tool 6 and several are connected in sequence without spiral fission drilling tool 7.
3rd kind of combining form, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool B3, a several left sides
The squeezed seperated drilling tool C4 of the seperated drilling tool 6, one of rotation, a dextrorotation fission drilling tool 5 and several successively connect without spiral fission drilling tool 7
It connects.
4th kind of combining form, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool B3, a several left sides
The squeezed seperated drilling tool C4 of the seperated drilling tool 6, one of rotation, a left-handed seperated drilling tool 6 and several successively connect without spiral fission drilling tool 7
It connects.
Assembly type drilling tool is 3.:
1st kind of combining form, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool C4, a dextrorotation
Seperated drilling tool 5 and several are connected in sequence without spiral fission drilling tool 7.
2nd kind of combining form, from bottom to up by one drill bit fission drilling tool 1, one squeezed seperated drilling tool C4, one it is left-handed
Seperated drilling tool 6 and several are connected in sequence without spiral fission drilling tool 7.
Embodiment 2
As shown in figure 12, the short spiral extrusion soil filling pile combined type construction method of the utility model, including construction site
Matter condition analysis, construction method are determining, construction drilling tool selects and construction technology process application.
1) engineering project is Pile of Deep Foundation Pit, is determined using Standard piercing in-situ test blow counts N value, N=23 is applied
Workshop Rock Conditions be it is loose in close medium-fine sand soil layer, engineering design useDeposited reinforced concrete pile,
To improve single pile horizontal resist forces, therefore engineering method 1 is used, assembly type drilling tool uses drilling tool shown in Fig. 9, i.e. combined type in embodiment 1
The 1st kind of form of drilling tool 1..
2) the drilling machine align piles position of combined drilling tool will be installed, after the verticality for adjusting drilling machine mainmast, starting is bored
Mechanomotive force head applies left-hand torque, and it is squeezed up to apex point is drilled into design stake holes depth that stake holes drilling is 1. carried out using combined drilling tool
Degree, in this stake holes drilling squeezing process, by 1 drilling of drill bit fission drilling tool come out the soil body, by expand body fission drilling tool A2 by
Step is expressed in stake holes surrounding soil.
3) it keeps drill power head to continue to left-hand torque to drilling tool, while applying upper lifting force, it will be on drilling tool extruding expanding body X
The collapsing and the undergauge soil body of side, are expressed in stake holes wall using the reverse acting spiral of dextrorotation fission drilling tool 5, start left-handed squeeze in drilling tool
While expanding promotion, start concrete pump, carries out the filling of coagulation soil pressure to the squeezed stake holes of drilling is completed, this drilling tool is left-handed to be squeezed
Expand to be promoted and continues to that drilling tool mentions until designing the above 0.3m of stake top absolute altitude, for there are top emptying aperture feelings with piling pressure filling process
Condition, continues to keep that drilling tool is left-handed above mentions, until drilling tool lift-off earth's surface.
4) it utilizes drilling machine pair hoist engine and vibrator by reinforcement cage immersion into cast-in-place concrete pile, forms cylindrical reinforcing steel
Concrete extrusion soil filling pile.
It, can also be using combined drilling tool in embodiment 1 1. the according to construction requirement in other variant embodiments
2 or the 3rd kind of form.
Embodiment 3
As shown in figure 13, the short spiral extrusion soil filling pile combined type construction method of the utility model, including construction site
Matter condition analysis, construction method are determining, construction drilling tool selects and construction technology process application.
1) 26 layers of residential building are engineered to, composite foundation treatment uses 400 plain concrete extrusion soil filling pile of φ, field of constructing
Ground geological mapping report display, the place be double-layered ground, upper formation be in close silt, understratum is for deep completely decomposed
Layer, SPT blow count hit for N=62, therefore, select engineering method 2, use assembly type drilling tool shown in Fig. 10 to improve construction efficiency, i.e.,
The 1st kind of form of combined drilling tool 2. in embodiment 1.
2) the drilling machine align piles position of combined drilling tool will be installed, the verticality of drilling machine mainmast is adjusted, start drilling machine
Power head applies left-hand torque and lower pressure, and it is squeezed up to apex point is drilled into design stake that stake holes drilling is 2. carried out using combined drilling tool
Hole depth, in this drilling squeezing process, the soil body come out by 1 drilling of drill bit fission drilling tool first passes through squeezed seperated drilling tool B3
The soil body that a part of drilling comes out gradually is squeezed into stake holes side wall, another part soil body is squeezed via squeezed seperated drilling tool B3's
The gap expanded between body Y and stake holes side wall moves upward to squeezed seperated drilling tool C4, and is continued by squeezed fission drilling tool C4
Go upward to the extruding expanding body Z equipped with oblique soil discharge channel, under the thrust of lower part soil body uplink, a part of quilt of the uplink soil body
Extruding expanding body Z is squeezed into stake holes side wall, and another part soil body can continue up rotating operation via oblique soil discharge channel and enter the right side
Seperated drilling tool 5 is revolved, until this squeezed work progress of stake holes drilling continues to that drilling tool reaches stake holes projected depth.
3) continue to apply left-hand torque to assembly type drilling tool, while being applied with and dialling power, make the left-handed uplink of drilling tool until drilling tool
Lift-off stake holes, in this work progress, the reverse acting spiral of dextrorotation fission drilling tool 5 can will enter the soil in dextrorotation fission drilling tool 5
Body implements reverse extrusion, to complete for whole soil bodys in stake holes to be squeezed into pile peripheral earth.
4) it above mentions simultaneously assembly type drilling tool is left-handed, starts concrete pump, filled to the squeezed stake holes internal pressure of drilling is completed
Concrete completes the single pile construction of 400 plain concrete pile of φ until the above 0.4m of stake top absolute altitude.
It, can also be using combined type in embodiment 1 according to construction requirement and depth of stratum in other variant embodiments
Any form in the 2-4 of drilling tool 2..
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various changes and improvements that the technical solution of utility model is made should all fall into the protection that the utility model claims book determines
In range.
Claims (15)
1. a kind of assembly type drilling tool, it is characterised in that: including a drill bit fission drilling tool (1), the squeezed seperated drilling tool of at least one
With at least one without spiral fission drilling tool (7)；The drill bit fission drilling tool (1) and the core bar outer diameter without spiral fission drilling tool (7)
It is equal diameter or variable diameters；The external spiral of the drill bit fission drilling tool (1) is uniform pitch or varying pitch；The squeezed seperated brill
The external spiral of tool is uniform pitch or varying pitch；The screw pitch of all seperated drilling tools with external spiral is equal or unequal；Outside all bands
The external spiral diameter of the seperated drilling tool of spiral is equal to the pile diameter of design；During the top of the drill bit fission drilling tool (1) is
Six side's quick coupling in sky；The squeezed seperated drilling tool and without be at the top of spiral fission drilling tool (7) in hollow six sides it is quick
Connector；The squeezed seperated drilling tool and the bottom without spiral fission drilling tool (7) are hollow outer six side's quick couplings；All points
Body drilling tool is connected by hollow six sides quick coupling.
2. assembly type drilling tool according to claim 1, it is characterised in that: the drill bit fission drilling tool (1) and squeezed fission
The external spiral of drilling tool is left-handed.
3. assembly type drilling tool according to claim 1 or 2, it is characterised in that: the squeezed seperated drilling tool is squeezed fission
Drilling tool A (2), squeezed fission drilling tool B (3) or squeezed fission drilling tool C (4) at least one；
The lower part of the squeezed fission drilling tool A (2) and squeezed fission drilling tool B (3) is the hollow round table with sinistral external thread
Body (21,31), the outer diameter of the hollow cone cylinder body is gradually increased from the bottom to top；
The top of the squeezed fission drilling tool A (2) is isodiametric hollow cylindrical extruding expanding body X (22)；The squeezed seperated brill
The top for having B (3) is isodiametric hollow cylindrical extruding expanding body Y (32)；
The lower part of the squeezed fission drilling tool C (4) is left-handed drilling rod (41), and top is that periphery wall has oblique soil discharge channel
(422) extruding expanding body Z (42)；
The diameter of the extruding expanding body X (22) is equal to the pile diameter of design；The diameter of the extruding expanding body Y (32) is less than design
Pile diameter, and it is greater than the core bar diameter of drilling tool below；The diameter of the extruding expanding body Z (42) is less than or equal to design
Pile diameter.
4. assembly type drilling tool according to claim 3, it is characterised in that: the oblique soil discharge channel (422) is circumferentially equal
The angle of even distribution, inclined direction and drilling tool central axis is 5~15 °；The quantity of the oblique soil discharge channel (422) is 5
~15；Oblique fin (421) are equipped between two neighboring oblique soil discharge channel (422)；The oblique soil discharge channel (422)
Width is 3~6 times of oblique fin (421) width.
5. -2 or 4 any assembly type drilling tool according to claim 1, it is characterised in that: further include at least one dextrorotation point
Body drilling tool (5) or left-handed seperated drilling tool (6).
6. assembly type drilling tool according to claim 3, it is characterised in that: further include at least one dextrorotation fission drilling tool (5)
Or left-handed seperated drilling tool (6).
7. assembly type drilling tool according to claim 5, it is characterised in that: the dextrorotation fission drilling tool (5) and left-handed fission
The external spiral diameter of drilling tool (6) is equal to the pile diameter of design；The dextrorotation fission drilling tool (5) and left-handed seperated drilling tool
(6) external spiral is uniform pitch or varying pitch；The screw pitch of all seperated drilling tools with external spiral is equal or unequal.
8. assembly type drilling tool according to claim 6, it is characterised in that: the dextrorotation fission drilling tool (5) and left-handed fission
The external spiral diameter of drilling tool (6) is equal to the pile diameter of design；The dextrorotation fission drilling tool (5) and left-handed seperated drilling tool
(6) external spiral is uniform pitch or varying pitch；The screw pitch of all seperated drilling tools with external spiral is equal or unequal.
9. assembly type drilling tool according to claim 7 or 8, it is characterised in that: the assembly type drilling tool is from bottom to up by one
Root drill bit fission drilling tool (1), a squeezed fission drilling tool A (2), a dextrorotation fission drilling tool (5) and several are without spiral fission
Drilling tool (7) is connected in sequence；
The drill bit fission drilling tool (1), dextrorotation fission drilling tool (5) and the core bar outer diameter without spiral fission drilling tool (7) are etc. straight
Diameter；Each seperated drilling tool with external spiral is uniform pitch；The screw pitch of all seperated drilling tools with external spiral is equal；It is all
The external spiral diameter of seperated drilling tool with external spiral is equal to the pile diameter of design；
All seperated drilling tools are connected by hollow six sides quick coupling；
The lower part of the squeezed fission drilling tool A (2) is the hollow cone cylinder body (21) with sinistral external thread, the hollow cone cylinder body
Outer diameter be gradually increased from the bottom to top；The top of the squeezed fission drilling tool A (2) is isodiametric hollow cylindrical extruding expanding body X
(22)；The diameter of the extruding expanding body X is equal to the pile diameter of design.
10. assembly type drilling tool according to claim 9, it is characterised in that: the dextrorotation fission drilling tool (5) replaces with several
The left-handed seperated drilling tool (6) that root is sequentially connected.
11. assembly type drilling tool according to claim 9, it is characterised in that: the squeezed fission drilling tool A (2) replace with from
Under the supreme squeezed fission drilling tool B (3) of be sequentially connected and a squeezed fission drilling tool C (4)；
The lower part of the squeezed fission drilling tool B (3) is the hollow cone cylinder body (31) with sinistral external thread, the hollow cone cylinder body
Outer diameter be gradually increased from the bottom to top；The top of the squeezed fission drilling tool B (3) is isodiametric hollow cylindrical extruding expanding body Y
(32)；The diameter of the extruding expanding body Y (32) is less than the pile diameter of design, and is greater than the core bar diameter of drilling tool below；
The lower part of the squeezed fission drilling tool C (4) is left-handed drilling rod (41), and top is that periphery wall has oblique soil discharge channel
(422) extruding expanding body Z (42)；The diameter of the extruding expanding body Z (42) is less than or equal to the pile diameter of design；The oblique row
Native channel (422) is uniformly distributed circumferentially, and the angle of inclined direction and drilling tool central axis is 5~15 °；The oblique casting
The quantity in channel (422) is 5~15；Oblique fin (421) are equipped between two neighboring oblique soil discharge channel (422)；It is described
The width of oblique soil discharge channel (422) is 3~6 times of oblique fin (421) width.
12. assembly type drilling tool according to claim 11, it is characterised in that: the dextrorotation fission drilling tool (5) is if replace with
The left-handed seperated drilling tool (6) that dry root is sequentially connected.
13. assembly type drilling tool according to claim 11 or 12, it is characterised in that: the squeezed fission drilling tool B (3) and squeeze
Expand and is connected with several left-handed seperated drilling tools (6) being sequentially connected between fission drilling tool C (4).
14. assembly type drilling tool according to claim 9, it is characterised in that: the squeezed fission drilling tool A (2) replaces with one
The squeezed fission drilling tool C (4) of root；
The lower part of the squeezed fission drilling tool C (4) is left-handed drilling rod (41), and top is that periphery wall has oblique soil discharge channel
(422) extruding expanding body Z (42)；The diameter of the extruding expanding body Z (42) is less than or equal to the pile diameter of design；The oblique row
Native channel (422) is uniformly distributed circumferentially, and the angle of inclined direction and drilling tool central axis is 5~15 °；The oblique casting
The quantity in channel (422) is 5~15；Oblique fin (421) are equipped between two neighboring oblique soil discharge channel (422)；It is described
The width of oblique soil discharge channel (422) is 3~6 times of oblique fin (421) width.
15. assembly type drilling tool according to claim 14, it is characterised in that: the dextrorotation fission drilling tool (5) is if replace with
The left-handed seperated drilling tool (6) that dry root is sequentially connected.
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| CN201820227903.7U CN208220632U (en) | 2018-02-08 | 2018-02-08 | A kind of assembly type drilling tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360978A (en) * | 2018-02-08 | 2018-08-03 | 中国京冶工程技术有限公司 | A kind of short spiral extrusion soil filling pile combined type construction method and assembly type drilling tool |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360978A (en) * | 2018-02-08 | 2018-08-03 | 中国京冶工程技术有限公司 | A kind of short spiral extrusion soil filling pile combined type construction method and assembly type drilling tool |
| CN108360978B (en) * | 2018-02-08 | 2024-02-13 | 中国京冶工程技术有限公司 | Combined construction method of short spiral soil-squeezing bored concrete pile and assembled drilling tool |
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