CN208293568U - Extruding and removing soil complex superposition is nested drilling tool - Google Patents
Extruding and removing soil complex superposition is nested drilling tool Download PDFInfo
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- CN208293568U CN208293568U CN201820121816.3U CN201820121816U CN208293568U CN 208293568 U CN208293568 U CN 208293568U CN 201820121816 U CN201820121816 U CN 201820121816U CN 208293568 U CN208293568 U CN 208293568U
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Abstract
The utility model relates to technical field of buildings, it is nested drilling tool more particularly, to a kind of extruding and removing soil complex superposition.The drilling tool includes: the outer sleeve drilling tool, intermediate sleeve drilling tool and center drilling tool being sequentially coaxially arranged, and each drilling tool all has crowded, casting complex function；Each linkage of the drilling tool is superposition phase shell type, by matching with ancillary equipment hoisting mechanism, can finally form a kind of extruding and removing soil complex superposition and be nested the CFG variable diameter back taper stepped ramp type stake of drilling tool preparation.Therefore the optimization of pile-type, the improvement of drilling tool function, synthesis embody three high features of engineering method: high quality, high speed, high benefit.Energy saving, emission reduction green construction engineering method makes enterprise be benefited, and owner is benefited, and society is benefited.
Description
Technical field
The utility model relates to technical field of buildings, more particularly, to a kind of extruding and removing soil complex superposition be nested drilling tool and
CFG variable diameter back taper stepped ramp type stake.
Background technique
Existing pile-type defect: in the tide of reform and opening-up, construction industry has rapid development, and architectural engineering is to foundation
Design, construction requirement it is higher and higher, concrete stake and reinforced concrete pile basis and composite foundation are in works such as skyscraper, bridge, harbours
It is used widely in journey, in order to make concrete stake and reinforced concrete pile meet bending resistance, anti-shearing, improves bearing capacity and shockproof requirements etc. and set
Meter requires, and people constantly improve the shape of concrete stake and reinforced concrete pile.To further satisfaction design requirement, former material is saved
Expect dosage, improve construction quality and shortens construction speed.With traditional pile-type that existing equipment and technique are built, vertical and horizontal section is logical
It is often circle or barrette that be not long with stake and changing, bearing capacity is mainly by the frictional resistance of stake side and the end resistance group at stake end
At.
Existing engineering method defect: in building structure or railway, highway soft foundation processing, need to carry out the ground of disposal field soil
Soil from shallow to deep according to mean shear wave velocity value changing rule can generally be divided into Soft site soil, in soft Site Soil, in hard field
Ground soil, hard ground soil.It is (weak foundation soil can be simply divided into soil compaction area according to the soft or hard degree of Site Soil and soil depth
Site Soil, in soft Site Soil, wherein water content it is higher or saturation cohesive soil except)；Casting area (Moderate stiff soil sites soil, hard ground
Outside earth removal).
To improve the bearing capacity of foundation soil and improving the compression modulus of ground, generally take based on pile body displacement foundation soil
Long screw auger pressure deposited pile-CFG pile work method.A kind of novel engineering method-screw rod pile is developed again in recent years, which is to pass through improvement
Equipment increases self weight, increases power mechanism kinetic energy, is allowed to drilling tool torque and becomes larger.Using synchronous skill when the drilling tool pore-forming, pile
Art is crept into and after soil compaction to projected depth when pore-forming based on soil compaction, reversal synchronization technology mention brill simultaneously pressure concrete injecting pile to setting
Absolute altitude is counted, therefore is unearthed amount seldom, has encrypted soil around pile.
The above two engineering method bearing capacity for increasing foundation soil all different degrees of in suitable stratum.But for complexity
Foundation soil, drilling tool function used in two kinds of engineering methods is more single, shallow-layer can soil compaction area, CFG pile work method can only letter
Soil singly is replaced, the reduction of soil around pile side friction is caused；In the harder casting area of deep layer, the further high torque of screw rod pile work method
Go squeezed, cause drilling difficult, influence work efficiency, such as to closely knit sandy soil, attempt it is squeezed it, its structural strength can be destroyed, very
Swollen to cutting, side friction and end resistance reduce instead.The single-function of two kinds of engineering methods is unable to adaptation to local conditions Ground Treatment
Soil causes certain cost waste, affects bearing capacity of single pile and play effect.
Utility model content
It is nested brill the purpose of this utility model is to provide a kind of CFG variable diameter back taper stepped ramp type stake and extruding and removing soil complex superposition
Tool, the disadvantage of bad adaptability single with the engineering method for solving existing equipment, to solve cost waste, the not high skill of bearing capacity of single pile
Art problem.
In order to solve the above technical problems, in a first aspect, the utility model provides a kind of extruding and removing soil complex superposition is nested drilling tool,
Comprising: the outer sleeve drilling tool being sequentially coaxially arranged, intermediate sleeve drilling tool and center drilling tool；
Wherein, among the outer sleeve drilling tool, intermediate sleeve drilling tool and center drilling tool at least one by one have squeeze, casting
The tool body of complex function is constituted；The outer diameter of the core pipe of the tool body gradually increases from bottom to top, and according to predetermined
Soil compaction ratio be changed；The soil compaction ratio is defined as core pipe overall diameter and tool body diameter ratio；The drilling tool master
The width of the helical blade of body is gradually reduced from bottom to top, so that the outer profile of all helical blades is distributed in equal diameter；
The center drilling tool is provided with the first linkage；The intermediate sleeve drilling tool is provided with the second linkage；Institute
It states outer sleeve drilling tool and is provided with third linkage；When the outer sleeve drilling tool is moving upward, the third linkage
It can be arranged and be locked on second linkage, second linkage can be arranged and be locked in described first
On dynamic device.
As a kind of further technical solution, the center drilling tool includes: hollow drill, openable and closable drill bit and first
Helical blade；First helical blade is axially set on the outer wall of the hollow drill along the hollow drill, described
Drill bit is connected to the lower end of the hollow drill, the first linkage coaxial arrangement in the upper end of the hollow drill,
First flange disk is provided on first linkage；
Wherein, the top of the hollow drill is the soil compaction drilling tool of center drilling tool, centered on the lower part of the hollow drill
The casting drilling tool of drilling tool；The numberical range of the soil compaction ratio of the soil compaction drilling tool is in 0.6-1.0, the soil compaction ratio of the soil compaction drilling tool
Gradually ascending gradual change from the bottom to top；
Wherein, the numberical range of the soil compaction ratio of the casting drilling tool is less than 0.6；Wherein, the soil compaction ratio of the casting drilling tool
From the bottom to top gradually ascending gradual change or be certain value.
As a kind of further technical solution, the intermediate sleeve drilling tool includes: first sleeve drilling tool and the second spiral
Blade, second helical blade are axially set on the outer wall of the first sleeve drilling tool along the first sleeve drilling tool,
The second linkage coaxial arrangement is arranged in the upper end of the first sleeve drilling tool in the upper end of second linkage
There is second flange disk, wherein the first sleeve drilling tool uses soil compaction ratio not less than 0.6 and the drilling tool master based on soil compaction
Body.
As a kind of further technical solution, the outer sleeve drilling tool includes: second sleeve drilling tool, third helical blade
And casing, the outer wall that is axially set in the second sleeve drilling tool of the third helical blade along the second sleeve drilling tool
On, the third linkage is set to the upper end of the second sleeve drilling tool, and the casing is set to the outer sleeve drilling tool
Upper end, and it is provided on the casing spring arrangement for being connected with hoisting mechanism wirerope, it links and fills in the third
The upper end set is provided with third ring flange.Wherein, the second sleeve drilling tool uses soil compaction ratio to be not less than 0.6 and be with soil compaction
Main tool body.
As a kind of further technical solution, first linkage includes the first cubic cylinder, and the described 1st
It is circular first sets of holes that square body, which is coaxially arranged with section, and first sets of holes are for being fixed on the center drilling tool
End；
Second linkage includes the second cubic cylinder, and it is rectangular that the described second cubic cylinder, which is coaxially arranged with section,
The second sets of holes, second sets of holes are for being inserted in first linkage；
The third linkage includes cylinder, and it is rectangular third sets of holes that the cylinder, which is coaxially arranged with section,
The third sets of holes are for being inserted in second linkage.
In order to solve the above technical problems, second aspect, the utility model provides a kind of extruding and removing soil complex superposition and is nested
Drilling tool preparation CFG variable diameter back taper stepped ramp type stake, which is characterized in that including main body pile body, be provided on the main body pile body to
Few two back taper stepped ramp type bodies, the main body pile body can be inserted with steel reinforcement cage according in design requirement pile body.
As a kind of further technical solution, the cross section of the back taper stepped ramp type body is circle, and vertical section is terraced
Type；The inverted cone disk inclined-plane extended line of the back taper stepped ramp type body and the included angle range of main body pile body central axis are as follows: 300
~450.
In order to solve the above technical problems, the third aspect, the utility model provides extruding and removing soil complex superposition phase described in one kind
Cover method of the drilling tool to prepare CFG variable diameter back taper stepped ramp type stake, which comprises the steps of:
Center drilling tool clockwise/counterclockwise is rotated by power device, is moved down simultaneously；
First linkage of center drilling tool close to intermediate sleeve drilling tool the second linkage when, promoted by ancillary equipment
Mechanism lifts outer sleeve drilling tool and intermediate sleeve drilling tool, contact them with each drilling tool linkage, and each linkage is logical
The default stress automatic lifting movement for crossing the rotation of center drilling tool, hoisting mechanism, realizes and is superimposed the locking that is nested automatically, so that each
Dynamic device locks mutually；
Make the clockwise/counterclockwise rotation simultaneously of each drilling tool by power device, and moves down；
It when each drilling tool is drilled into respective projected depth, stops operating, drilling machine master winch promotes center drilling tool, by center drilling tool
Lower end drill bit open, starting concrete pump, start pressure concrete injecting, in pressure concrete injecting, promotion center drilling tool, successively promotes intermediate sleeve later
Cylinder drilling tool, outer sleeve drilling tool, until outer sleeve drilling tool is mentioned aperture absolute altitude, while concrete also presses and fills pile to designed elevation.
It include as follows as a kind of further technical solution, when the ancillary equipment lift mechanism lifts outer sleeve drilling tool
Step:
One casing is installed on outer sleeve drilling tool, spring arrangement is provided on casing, ancillary equipment hoisting mechanism is logical
It crosses wirerope, spring arrangement and casing to connect, presets stress automatic lifting using hoisting mechanism and act, drilling tool rotation is matched at center
Under conjunction, make the first linkage of the third linkage of outer sleeve drilling tool, the second linkage of intermediate sleeve drilling tool, center drilling tool
Device is superimposed the locking that is nested automatically；And it realizes that hoisting mechanism presets stress by preset function on hoisting mechanism, passes through steel
Cord, spring arrangement realize that each linkage is superimposed the automatic work for the locking that is nested automatically.
By adopting the above technical scheme, the utility model has the following beneficial effects:
The utility model provides a kind of extruding and removing soil complex superposition and is nested drilling tool, and each linkage on the drilling tool is folded
Add phase shell type, matched with ancillary equipment hoisting mechanism, so as to form multiple back taper stepped ramp type drillings, successively promotes drilling tool
Pressure concrete injecting is achieved a kind of CFG variable diameter back taper stepped ramp type stake simultaneously.
The utility model provides a kind of CFG variable diameter back taper stepped ramp type stake and preparation method and extruding and removing soil complex superposition is nested
Drilling tool, bearing capacity not only include the pile side friction and stake end bottom bearing of traditional pile body, and the back taper of back taper stepped ramp type body
Disk inclined-plane, can be decomposed into the vertical power vertically downwards in part the tangential force and normal force of the conical surface, soil around pile formed passively by
Compressive stress state and squeezed state, increase pile perimeter resistance, improve the bearing capacity of single pile, can reduce settling amount.Stake cone
The shallow water oil field formula of platform part bearing capacity Ke Yong Tai Shaji (Terzaghi) calculates.The utility model is to solve simultaneously
Adverse effect caused by traditional drilling tool single-function and propose, and it is an object of the present invention to provide it is a kind of for compound foundation pile squeeze,
Casting combination drill tool.It is nested combination construction by combination drill tool superposition, soil compaction, casting are simultaneously all into and can disposably completing
Pore-forming and concrete pressure fill pile, realize the raising of work efficiency, and bearing capacity of single pile further improves, and reduces costs simultaneously, contract
The short duration.
The utility model provides a kind of preparation method, and this method is by the way that extruding and removing soil complex superposition to be nested drilling tool and auxiliary
Equipment lifting mechanism combines, to form the CFG variable diameter back taper stepped ramp type stake with above structure and function.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 a, Fig. 1 b are the structural schematic diagram that the utility model two types drilling tool is in original state；
Fig. 2 a, Fig. 2 b are the structural schematic diagram that the utility model two types drilling tool is in promotion state；
Fig. 3 a, Fig. 3 b are the structural schematic diagram of the utility model two types center drilling tool；
Fig. 4 is the structural schematic diagram of the first linkage of the utility model；
Fig. 5 a, Fig. 5 b are the structural schematic diagram of the utility model two types intermediate sleeve drilling tool；
Fig. 6 is the structural schematic diagram of the second linkage of the utility model；
Fig. 7 a, Fig. 7 b are the structural schematic diagram of the utility model two types outer sleeve drilling tool；
Fig. 8 is the structural schematic diagram of the utility model third linkage；
Fig. 9 a, Fig. 9 b are the structural schematic diagram of the utility model two types CFG variable diameter back taper stepped ramp type stake；
Figure 10 a to Figure 16 a and Figure 10 b to Figure 17 b is that the construction procedure of two kinds of different function drilling tools of the utility model is illustrated
Figure.
In figure, 1 is hoisting mechanism, and 2 be wirerope, and 3 be center drilling tool, and 31 be first flange disk, and 32 be the first linkage dress
It sets, 33 be hollow drill, and 34 be the first helical blade, and 35 be drill bit, and 4 be intermediate sleeve drilling tool, and 41 be second flange disk, 42
It is first sleeve drilling tool for the second linkage, 43,44 be the second helical blade, and 45 be earth discharging hole, and 46 is bore tooth, and 5 be outer
Sleeve drilling tool, 51 be third ring flange, 52 be third linkage, 53 be second sleeve drilling tool, 54 be third helical blade, 55
For earth discharging hole, 56 is bore tooth, and 57 be casing, pile body based on 71, and 72 be back taper stepped ramp type body；8 pump for concrete.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
Embodiment one
In conjunction with shown in Fig. 1 a, Fig. 1 b to Fig. 2 a, Fig. 2 b, the present embodiment provides two kinds of extruding and removing soil complex superpositions to be nested
Drilling tool, Fig. 1 a, Fig. 2 a are that row master squeezes auxiliary drilling tool；Fig. 1 b, Fig. 2 b are to squeeze the auxiliary drilling tool of main row.The extruding and removing soil complex superposition is nested drilling tool
Comprising: the outer sleeve drilling tool 5 being sequentially coaxially arranged, intermediate sleeve drilling tool 4 and center drilling tool 3；The center drilling tool 3 is provided with
First linkage 32；The intermediate sleeve drilling tool 4 is provided with the second linkage 42；The outer sleeve drilling tool 5 is provided with
Three linkages 52；When the outer sleeve drilling tool 5 is moving upward, the third linkage 52 can be arranged and be locked in
On second linkage 42, second linkage 42 can be arranged and be locked on first linkage 32；
Wherein, the outer sleeve drilling tool 5, intermediate sleeve drilling tool 4 and center drilling tool 3 at least one of by one have squeeze, casting it is compound
The tool body of function is constituted, it is preferred that the outer sleeve drilling tool 5, intermediate sleeve drilling tool 4,3 three of center drilling tool all have it is crowded,
Casting complex function can also have crowded, casting complex function etc. with outer sleeve drilling tool 5, intermediate sleeve drilling tool 4.It is each described
The outer diameter of the core pipe of tool body gradually increases from bottom to top, and is changed according to scheduled soil compaction ratio, the soil compaction ratio
It is defined as core pipe overall diameter and tool body diameter ratio；The width of the helical blade of the tool body from bottom to top by
It is decrescence small, so that the outer profile of all helical blades is in equal diameter distribution (outer profile size its be tool body diameter).It is worth
Illustrate, for the design of the tool body helical blade, those skilled in the art can according to actual needs into
Row flexible setting.Wherein, it shall be understood in a broad sense herein.Such as: it is squeezed when outer sleeve drilling tool 5, intermediate sleeve drilling tool 4 have, casting
When complex function, the helical blade of corresponding tool body the lowermost frustum structure is then not necessarily to meet outer profile in equal diameter distribution
Rule because this frustum structure can approximation serve as " drill bit " effect use, those are set to the spiral shell on " drill bit "
Vane piece is not necessarily to be arranged according to outer profile in the requirement of equal diameter distribution.Certainly, frustum structure can satisfy spiral shell with upper bit
Vane piece outer profile is in the rule of equal diameter distribution.As it can be seen that extruding and removing soil complex superposition is nested each of drilling tool in the present embodiment
Dynamic device is superposition phase shell type, and each linkage on the drilling tool can be matched with ancillary equipment hoisting mechanism 1, so as to
Multiple back taper stepped ramp type drillings are enough formed, successively promoting drilling tool, pressure concrete injecting is achieved a kind of CFG variable diameter back taper stepped ramp type simultaneously
Stake.
In conjunction with shown in Fig. 3 a, Fig. 3 b to Fig. 4, Fig. 3 a is casting center drilling tool；Fig. 3 b is to squeeze the auxiliary center drilling tool of main row.This
Center drilling tool described in embodiment 3 includes: hollow drill 33, openable and closable drill bit 35 and the first helical blade 34；Described first
Helical blade 34 is axially set on the outer wall of the hollow drill 33 along the hollow drill 33, and the drill bit 35 connects
In the lower end of the hollow drill 33, the coaxial arrangement of the first linkage 32 is in the upper end of the hollow drill 33, in institute
State be provided on the first linkage 32 first flange disk 31 (or first flange disk take suitable size be set to linkage with
Drilling tool junction).Wherein, the top of the hollow drill 33 is the soil compaction drilling tool of center drilling tool, the lower part of the hollow drill
For the casting drilling tool of center drilling tool；Core pipe overall diameter in the soil compaction drilling tool and tool body diameter ratio from the bottom to top by
Gradual change is big, wherein defines the soil compaction ratio that the ratio is the soil compaction drilling tool, the numberical range of the soil compaction ratio of the soil compaction drilling tool exists
0.6-1.0, the soil compaction of the soil compaction drilling tool is than gradually ascending gradual change from the bottom to top；Outside core pipe in the casting drilling tool
Diameter becomes larger from the bottom to top with tool body diameter ratio, and defines the soil compaction ratio that the ratio is the casting drilling tool, institute
The numberical range of soil compaction ratio of casting drilling tool is stated less than 0.6；Wherein, the soil compaction of the casting drilling tool is than from the bottom to top gradually by small
It to big gradual change or is certain value (the soil compaction ratio of the casting drilling tool is certain value).
Preferably, specifically, extruding and removing soil combination drill tool main body is made of core pipe, helical blade, drill bit.The drilling tool
The outer diameter of the core pipe of main body gradually increases from bottom to top, and the width of the helical blade of the tool body gradually subtracts from bottom to top
It is small, so that the outer profile of all helical blades is distributed in equal diameter.Drilling tool is from bottom to top divided into two parts according to function, and lower part is row
Earth boring auger tool, casting drilling tool lower end are equipped with drill bit, and drill bit is responsible for breaking ground, creep into, and drill bit can be open when pressure concrete injecting；Casting drilling tool is negative
Duty: casting is revolved toward top；Casting drilling tool soil compaction ratio is less than 0.6.(soil compaction ratio: drilling tool core pipe overall diameter and drilling tool diameter it
Than soil compaction ratio is casting drilling tool less than 0.6, is soil compaction drilling tool not less than 0.6).Top is soil compaction drilling tool, is responsible for: rotation
Soil in exclusion pressure, squeezed casting drilling tool rotary row.The gradually ascending gradual change from the bottom to top of soil compaction drilling tool soil compaction ratio, is up to
1.0 (as light bar segments), prolonged action soil compaction drilling tool, supported hole side wall prevent hole wall from relaxation effect occur.Helical blade is thick
Degree, intensity, geometry and spiral shell diameter are than meeting crowded, casting combination drill tool functional requirement.
The soil compaction score that extruding and removing soil combination drill tool is selected according to the soft or hard degree of Site Soil is two kinds: the first, Site Soil with
Based on Moderate stiff soil sites soil, engineering method is used based on casting, the principle supplemented by soil compaction.Combination drill tool matching is based on casting drilling tool
It leads, the cooperation of soil compaction drilling tool.
The length of casting drilling tool is to handle Moderate stiff soil sites soil thickness, and soil compaction ratio preferably selects certain value.The length of soil compaction drilling tool
Degree or soil compaction ratio variation degree, depending on to handle it is weak, in soft place soil compactness and drilling machine power mechanism output torque size
Depending on.Drilling tool soil compaction than being light bar segment for 1.0, light bar segment and soil compaction drilling tool have helical blade length itself and should be greater than handling
It is weak, in soft place soil thickness.
Pore-forming is taken to be crept into substitute mode, and casting drilling tool is bored at soil compaction area (Soft site soil, in soft Site Soil) in advance
Into pore-forming, a part of row of piles soil drains into aperture by the rotation of casting drilling tool helical blade, but as soil compaction drilling tool follows up, soil discharge quantity is gradually
Become smaller to aperture and sealed, casting drilling tool helical blade continues soil in Moderate stiff soil sites soil hole toward hole top soil compaction area rotation row at this time.
Soil during soil compaction area revolves and arranges with soil compaction drilling tool helical blade from large to small, core drilling rod overall diameter by it is thin it is thicker during,
By uniformly and it is again targetedly appropriate squeeze, squeezed consumption is in (Soft site soil, in soft Site Soil) hole wall, so that hole wall side is rubbed
Resistance enhancing.After soil compaction drilling tool, casting drilling tool all reach projected depth, then stop to bore, on one side the pressure concrete injecting into core pipe, one
Side lifting power machine structure drives combination drill tool Synchronous lifting, until pressure concrete injecting pile to designed elevation.
Crowded, casting combination drill tool is in drilling process, and the rotation of stake spoir a part invests in drilling rod helical blade after pore-forming, and one
Part rotation row is in aperture side, and a part is extruded, squeezed consumption is in soil compaction area hole wall.
Second, Site Soil with Soft site soil, in based on soft Site Soil, engineering method all uses soil compaction, and casting is also crowded
The principle of soil service.Combination drill tool matching is that soil compaction drilling tool is leading, casting drilling tool cooperation.
The length of casting drilling tool is to handle Moderate stiff soil sites soil thickness, and soil compaction ratio preferably selects gradual change value.The length of soil compaction drilling tool
Degree or soil compaction ratio variation degree, depending on to handle it is weak, in soft place soil compactness and drilling machine power mechanism output torque size
Depending on.Drilling tool soil compaction than being light bar segment for 1.0, light bar segment and soil compaction drilling tool have helical blade length itself and should be greater than handling
It is weak, in soft place soil thickness.
Pore-forming drilling takes large torque, slowly lower brill mode, drilling tool in advance soil compaction area (Soft site soil, in soft place
Soil) drilling is screwed, before drill bit does not enter Moderate stiff soil sites soil, drilling tool rotary is squeezed in soil, and drilling tool periphery soil is extruded, is squeezed, is bored
Have light bar segment access aperture in it is several after, aperture is sealed, aperture cannot be unearthed.Drilling tool revolving speed becomes faster at this time, and drill bit breaks ground drilling,
Casting drilling tool rotary casting, while rotation casting is carried out rotation and squeezed by soil compaction drilling tool.After drill bit enters Moderate stiff soil sites soil, casting drilling tool
Soil in Moderate stiff soil sites soil hole toward hole top rotation row, with helical blade from large to small to nothing during revolving row, core drilling rod is straight
Diameter by it is thin it is thicker during, rotation casting by uniformly and it is again targetedly appropriate squeeze, squeezed consumption in (Soft site soil, in it is soft
Site Soil) in hole wall, enhance hole wall side friction.After soil compaction drilling tool, casting drilling tool all reach projected depth, then stop
Bore, the pressure concrete injecting into core pipe on one side, one side lifting power machine structure drives combination drill tool Synchronous lifting, until pressure concrete injecting pile extremely
Designed elevation.
Crowded, casting combination drill tool is in drilling process, and the rotation of stake spoir a part invests in drilling rod helical blade after pore-forming, greatly
Part is extruded, squeezed consumption is in hole wall.
In conjunction with shown in Fig. 5 a, Fig. 5 b to Fig. 6, Fig. 5 a is to squeeze the auxiliary intermediate sleeve drilling tool of main row, the centre drill of it and casting
Tool combination；Fig. 5 b is to squeeze the auxiliary intermediate sleeve drilling tool of main row, it and squeeze the auxiliary center drill assembly of main row.In described in the present embodiment
Between sleeve drilling tool 4 include: first sleeve drilling tool 43 and the second helical blade 44, second helical blade 44 is along the first set
Being axially set on the outer wall of the first sleeve drilling tool 43 for cylinder drilling tool 43, is provided with multiple on the first sleeve drilling tool 43
Earth discharging hole 45, (center drilling tool soil compaction ratio with soil compaction be it is main when, do not set earth discharging hole.) second linkage 42 coaxial arrangement in
The upper end of the first sleeve drilling tool 43 is provided with second flange disk 41 (or second in the upper end of second linkage 42
Ring flange takes suitable size to be set to linkage and sleeve drilling tool junction), wherein the first sleeve drilling tool is using crowded
Soil is than being not less than 0.6 and the tool body based on soil compaction, it is preferred that the lower end of the first sleeve drilling tool 43 is provided with brill
Tooth 46.
It is formed it is worth noting that intermediate sleeve drilling tool 4 can be nested according to design requirement by multiple superpositions.Intermediate sleeve bores
When tool 4 is nested by multiple superpositions, in addition to sleeve diameter and length are different, structure is all the same.
In conjunction with shown in Fig. 7 a, Fig. 7 b to Fig. 8, Fig. 7 a is to squeeze the auxiliary outer sleeve drilling tool of main row, it and casting center drill set
It closes；Fig. 7 b is to squeeze the auxiliary outer sleeve drilling tool of main row, it and squeeze the auxiliary center drill assembly of main row.Outer sleeve described in the present embodiment bores
Tool 5 includes: second sleeve drilling tool 53, third helical blade 54 and casing 57, and the third helical blade 54 is along described second set
Being axially set on the outer wall of the second sleeve drilling tool 53 for cylinder drilling tool 53, is provided with multiple on the second sleeve drilling tool 53
Earth discharging hole 55 (when center drilling tool soil compaction ratio to squeeze is main, does not set earth discharging hole.) the third linkage 52 is set to described
On the inside of the upper end of two sleeve drilling tools 53, the casing 57 is set on the outside of the upper end of the second sleeve drilling tool 53, and described
It is provided with the spring arrangement for being connected with 1 wirerope 2 of hoisting mechanism on casing 57, passes through preset function reality on hoisting mechanism 1
Existing hoisting mechanism presets stress, realizes that each linkage is superimposed the automatic of the locking that is nested automatically by wirerope 2, spring arrangement
Work.
The upper end of the third linkage 52 is provided with third ring flange 51, and (or third ring flange takes suitable size
It is set to linkage and sleeve drilling tool junction), outer sleeve drilling tool uses soil compaction ratio crowded based on soil compaction not less than 0.6
Casting combination drill tool.Preferably, it is provided in the lower end of the second sleeve drilling tool 53 and bores tooth 56.
It is worth noting that the first helical blade 34, the second helical blade 44 and third helical blade 54 can both be positive
Spirally, or backpitch formula is no longer limited to herein.
The geometry of linkage in the present embodiment can also flexible setting according to actual needs, with following a kind of excellent
Select mode for example:
First linkage 32 includes the first cubic cylinder, and the described first cubic cylinder is coaxially arranged with section as circle
First sets of holes of shape, first sets of holes are used to be fixed on the upper end of the hollow drill 33；Second linkage 42 wraps
The second cubic cylinder is included, it is the second rectangular sets of holes that the described second cubic cylinder, which is coaxially arranged with section, and second sets of holes are used
In being inserted in first linkage 32；The third linkage 52 includes cylinder, and the cylinder, which is coaxially arranged with, to be cut
Face is rectangular third sets of holes, and the third sets of holes are for being inserted in second linkage 42.
Wherein, the linkage upper end of each drilling tool is provided with the flange that diameter is greater than square column type cross section diagonal
Disk.Wherein, or each linkage and (sleeve) drilling tool junction are provided with diameter and are equal to square column type cross section side length
Its function of ring flange: promote corresponding linkage interlocking in place；Drilling tool 3 vertical pressure in center is passed to other sleeves to bore
Tool.The ring flange that each linkage and (sleeve) drilling tool junction is arranged also has connection, fixes linkage and (sleeve)
It is whole to make one for the effect of drilling tool.Drilling tool 3 vertical pressure in center is passed into other sleeve drilling tools.
To sum up, the drilling tool in the present embodiment can cooperate ancillary equipment to use, and ancillary equipment is by hoisting mechanism 1, wirerope
2, casing 57 forms.The connection of this kind of drilling tool is mainly realized by the linkage that can be unlocked on drilling tool with combining.Specifically, it is boring
Hoisting mechanism 1 is arranged in mechanomotive force head lower end, and hoisting mechanism 1 connects the casing 57 slided up and down by wirerope 2.The ancillary equipment
Service is provided for linkage interaction.Ancillary equipment, linkage make more sleeve extruding and removing soil complex superpositions be nested drilling tool pore-forming
For the drilling of multiple back taper stepped ramp types, successively pressure concrete injecting is achieved a kind of CFG variable diameter back taper stepped ramp type stake to promotion drilling tool simultaneously.
Embodiment two
In conjunction with shown in Fig. 9 a, Fig. 9 b, Fig. 9 a pile-type foundation soil with Moderate stiff soil sites soil based on, the row of taking lead squeeze auxiliary drilling tool at
Hole；Fig. 9 b pile-type foundation soil with it is weak and in based on soft Site Soil, take and squeeze the auxiliary drilling tool pore-forming of main row.The present embodiment two is being implemented
The CFG variable diameter back taper that a kind of extruding and removing soil complex superposition according to embodiment one is nested drilling tool preparation is also provided on the basis of example one
Stepped ramp type stake comprising main body pile body 71 is provided at least two back taper stepped ramp type bodies 72 on the main body pile body 71.
Further, the cross section of the back taper stepped ramp type body 72 is circle, and vertical section is inverted ladder type.Back taper stepped ramp type body
72 inverted cone disk inclined-plane can be decomposed into the vertical power vertically downwards in part the tangential force and normal force of the conical surface.
Wherein, the angle of 71 side of main body pile body and horizontal plane is 900.
Preferably, the angle of the inverted cone disk inclined-plane extended line of the back taper stepped ramp type body 72 and main body pile body central axis
Angular range is preferably: 300~450.
Preferably, the main body pile body 71 can be inserted with steel reinforcement cage according in design requirement pile body.
To sum up, CFG variable diameter back taper stepped ramp type stake provided in this embodiment includes main body pile body 71, on the main body pile body 71
At least two back taper stepped ramp type bodies 72 are provided with, bearing capacity not only has the pile side friction and stake end bottom bearing of traditional pile body,
And the back taper disk inclined-plane of back taper stepped ramp type body 72, the vertical power vertically downwards in part can be decomposed into the conical surface tangential force and
Normal force, soil around pile form passive compression chord state and squeezed state, and pile peripheral friction force increases, and synthesis improves holding for single pile
Power is carried, settling amount is reduced.Be nested combination construction by extruding and removing soil combination drill tool superposition simultaneously, soil compaction, casting simultaneously all into,
And pore-forming and concrete pressure filling pile can be disposably completed, the raising of work efficiency is realized, bearing capacity of single pile further improves, simultaneously
It reduces costs, shortens the duration.
As it can be seen that the CFG variable diameter back taper stepped ramp type pile bearing capacity not only has the pile side friction of traditional pile body and stake end end to hold
Power, and the back taper disk inclined-plane of back taper stepped ramp type body can be decomposed into the vertical power vertically downwards in part the tangential force of the conical surface
And normal force, soil around pile form passive compression chord state and squeezed state, pile peripheral friction force increases；Again since each drilling tool is equal
With squeeze, casting complex function, extruding and removing soil combination drill tool superposition is nested combination construction, and soil compaction, casting are simultaneously all into and can one
Secondary property completes pore-forming and concrete pressure fills pile, realizes the raising of work efficiency, bearing capacity of single pile further improves, and reduces sedimentation
Amount, reduces costs simultaneously, shortens the duration.Therefore the optimization of pile-type, the improvement of drilling tool function, synthesis embody the three of engineering method
High feature: high quality, high speed, high benefit.Energy conservation, emission reduction green construction engineering method make enterprise be benefited, owner be benefited, society by
Benefit.
Embodiment three
In conjunction with shown in Figure 10 a to Figure 16 a and Figure 10 b to Figure 17 b, the present embodiment three also provides a kind of according to one institute of embodiment
The extruding and removing soil complex superposition stated is nested drilling tool in the method for preparing CFG variable diameter back taper stepped ramp type stake comprising following steps:
3 clockwise/counterclockwise of center drilling tool is rotated by power device (such as: power motor), is moved down simultaneously；
First linkage 32 of center drilling tool 3 close to intermediate sleeve drilling tool 4 the second linkage 42 when, set by auxiliary
Standby hoisting mechanism 1 promotes outer sleeve drilling tool 5, and (specifically, hoisting mechanism 1 promotes casing 57 by wirerope 2, and the drive of casing 57 mentions
Rise outer sleeve drilling tool 5), the third linkage 52 of outer sleeve drilling tool 5 is arranged and is locked in the second linkage of intermediate sleeve drilling tool 4
On device 42,4 Synchronous lifting of intermediate sleeve drilling tool is then driven, the second linkage 42 of intermediate sleeve drilling tool 4 is finally arranged
And be locked on the first linkage 32 of center drilling tool 3, each linkage locks mutually that (interlocking here is at least at this time
It can be understood as radial limit, also there is corresponding position-limiting action under the action of hoisting mechanism 1 in axial direction certainly)；
Make the clockwise/counterclockwise rotation simultaneously of each drilling tool by power device (such as: power motor), and to moving down
It is dynamic；
It when each drilling tool is drilled into respective projected depth, stops operating, drilling machine master winch promotes center drilling tool 3, center drilling tool 3
Lower end drill bit 35 open (expose discharge port), 8 starting of concrete pump starts pressure concrete injecting, the promotion center drilling tool 3 in pressure concrete injecting, it
Intermediate sleeve drilling tool 4, outer sleeve drilling tool 5 are successively promoted afterwards.(center drilling tool interacts Lifting scheme with two kinds of intermediate sleeve drilling tool:
First, the horizontal interface dimensions of drill bit 35 are slightly larger than 4 bottom size of intermediate sleeve drilling tool；Second, power device lower end and intermediate sleeve
4 upper end of drilling tool is limited with wirerope and is controlled, locating dimension are as follows: drilling tool 3 length in center cuts 4 length of intermediate sleeve drilling tool.Center
3 bottom end of drilling tool, 4 bottom end Synchronous lifting of intermediate sleeve drilling tool to 5 bottom end of outer sleeve drilling tool, when flat mouth, ancillary equipment hoisting mechanism 1
5 height of limit outer sleeve drilling tool is controlled by wirerope, three kinds of drilling tool synchronizations are mentioned by master winch to outside aperture at this time), until outer
Sleeve drilling tool 5 proposes aperture absolute altitude, while concrete also presses and fills pile to designed elevation.
Further, include the following steps: when the ancillary equipment hoisting mechanism 1 promotes outer sleeve drilling tool 5 in outer sleeve
One casing 57 is installed on drilling tool 5, is provided with spring arrangement on casing 57, ancillary equipment hoisting mechanism 1 by wirerope 2,
Spring arrangement is connect with casing 57, is preset stress automatic lifting using hoisting mechanism 1 and is acted, in the case where center drilling tool 3 is rotatably assorted,
Make the third linkage 52 of outer sleeve drilling tool 5, the second linkage 42 of intermediate sleeve drilling tool 4, center drilling tool 3 first
Dynamic device 32 is superimposed the locking that is nested automatically；And it realizes that hoisting mechanism presets stress by preset function on hoisting mechanism 1, leads to
Cross wirerope, spring arrangement realizes automatic work.
The third linkage 52 of outer sleeve drilling tool 5 is enable certainly by wirerope 2, spring arrangement using hoisting mechanism 1
It is dynamic to be set on the second linkage 42 of intermediate sleeve drilling tool 4；Similarly the second linkage of intermediate sleeve drilling tool can be certainly
It is dynamic to be set on the first linkage of center drilling tool.
Back taper stepped ramp type body 72 is set and is nested the principle of drilling tool using different types of extruding and removing soil complex superposition:
Pile foundation or basement process range internal upper part are stable in the presence of (more than level of ground water) earth formation, compressibility is smaller, holds
Carry power is higher, thickness biggish stratum when settable two or more back taper stepped ramp type bodies 72.
With squeeze based on extruding and removing soil drilling tool be suitable for water content it is higher or saturation cohesive soil except with weakness, soft place
Ground base based on soil.
Note: during drilling machine master winch promotes drilling tool, ancillary equipment hoisting mechanism 1 accordingly cooperates.Intermediate sleeve drilling tool 4 is
When most, such linkage is stackable to be nested interlocking in place, forms the stepped ramp type stake of inverted ladder type multi-step back taper.
To sum up, which not only has the pile side friction of traditional pile body and stake end end to hold
Power, and the back taper disk inclined-plane of back taper stepped ramp type body can be decomposed into the vertical power vertically downwards in part the tangential force of the conical surface
And normal force, soil around pile form passive compression chord state and squeezed state, pile peripheral friction force increases；Again since each drilling tool is equal
With squeeze, casting complex function, extruding and removing soil combination drill tool superposition is nested combination construction, and soil compaction, casting are simultaneously all into and can one
Secondary property completes pore-forming and concrete pressure fills pile, realizes the raising of work efficiency, bearing capacity of single pile further improves, and reduces sedimentation
Amount, reduces costs simultaneously, shortens the duration.Therefore the optimization of pile-type, the improvement of drilling tool function, synthesis embody the three of engineering method
High feature: high quality, high speed, high benefit.Energy conservation, emission reduction green construction engineering method make enterprise be benefited, owner be benefited, society by
Benefit.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (5)
- The drilling tool 1. a kind of extruding and removing soil complex superposition is nested characterized by comprising the outer sleeve drilling tool that is sequentially coaxially arranged, in Between sleeve drilling tool and center drilling tool；Wherein, among the outer sleeve drilling tool, intermediate sleeve drilling tool and center drilling tool at least one by one have squeeze, casting it is compound The tool body of function is constituted；The outer diameter of the core pipe of the tool body gradually increases from bottom to top, and squeezes according to scheduled Native ratio is changed；The soil compaction ratio is defined as core pipe overall diameter and tool body diameter ratio；The tool body The width of helical blade is gradually reduced from bottom to top, so that the outer profile of all helical blades is distributed in equal diameter；The center drilling tool is provided with the first linkage；The intermediate sleeve drilling tool is provided with the second linkage；It is described outer Sleeve drilling tool is provided with third linkage；When the outer sleeve drilling tool is moving upward, the third linkage can It is arranged and is locked on second linkage, second linkage can be arranged and be locked in the first linkage dress It sets.
- 2. drilling tool according to claim 1, which is characterized in thatThe center drilling tool includes: hollow drill, openable and closable drill bit and the first helical blade；First helical blade is along institute Being axially set on the outer wall of the hollow drill for hollow drill is stated, the drill bit is connected to the lower end of the hollow drill, The first linkage coaxial arrangement is provided with the first method on first linkage in the upper end of the hollow drill Blue disk；Wherein, the top of the hollow drill is the soil compaction drilling tool of center drilling tool, and the lower part of the hollow drill is center drilling tool Casting drilling tool；The numberical range of the soil compaction ratio of the soil compaction drilling tool in 0.6-1.0, the soil compaction ratio of the soil compaction drilling tool by down toward On gradually ascending gradual change；Wherein, the numberical range of the soil compaction ratio of the casting drilling tool is less than 0.6；Wherein, the soil compaction ratio of the casting drilling tool is under Supreme gradually ascending gradual change is certain value.
- 3. drilling tool according to claim 2, which is characterized in thatThe intermediate sleeve drilling tool includes: first sleeve drilling tool and the second helical blade, and second helical blade is along described One sleeve drilling tool is axially set on the outer wall of the first sleeve drilling tool, and the second linkage coaxial arrangement is in described The upper end of first sleeve drilling tool is provided with second flange disk in the upper end of second linkage, wherein the first sleeve Drilling tool uses soil compaction than not less than 0.6 and the tool body based on soil compaction.
- 4. drilling tool according to claim 3, which is characterized in thatThe outer sleeve drilling tool includes: second sleeve drilling tool, third helical blade and casing, and the third helical blade is described in Second sleeve drilling tool is axially set on the outer wall of the second sleeve drilling tool, and the third linkage is set to described The upper end of two sleeve drilling tools, the casing are set to outer sleeve drilling tool upper end, and be provided on the casing for The connected spring arrangement of hoisting mechanism wirerope, is provided with third ring flange in the upper end of the third linkage, wherein institute Stating second sleeve drilling tool uses soil compaction than not less than 0.6 and the tool body based on soil compaction.
- 5. drilling tool according to claim 2, which is characterized in thatFirst linkage includes the first cubic cylinder, and it is circular that the described first cubic cylinder, which is coaxially arranged with section, One sets of holes, first sets of holes are used to be fixed on the upper end of the center drilling tool；Second linkage includes the second cubic cylinder, and it is rectangular that the described second cubic cylinder, which is coaxially arranged with section, Two sets of holes, second sets of holes are for being inserted in first linkage；The third linkage includes cylinder, and it is rectangular third sets of holes that the cylinder, which is coaxially arranged with section, described Third sets of holes are for being inserted in second linkage.
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| CN201820121816.3U CN208293568U (en) | 2018-01-24 | 2018-01-24 | Extruding and removing soil complex superposition is nested drilling tool |
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| CN201820121816.3U CN208293568U (en) | 2018-01-24 | 2018-01-24 | Extruding and removing soil complex superposition is nested drilling tool |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035341A (en) * | 2018-01-24 | 2018-05-15 | 李广信 | Extruding and removing soil complex superposition is nested drilling tool, the back taper stepped ramp type stake of CFG reducings and method |
| CN109837888A (en) * | 2019-01-04 | 2019-06-04 | 刘录怀 | A kind of pile foundation enlarged footing operational method |
| CN110424386A (en) * | 2019-07-15 | 2019-11-08 | 李承涛 | A kind of high tensile steel tube concrete-pile |
| CN112554174A (en) * | 2020-12-30 | 2021-03-26 | 阳光学院 | Crowded ware that expands of cylindric for civil engineering |
-
2018
- 2018-01-24 CN CN201820121816.3U patent/CN208293568U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035341A (en) * | 2018-01-24 | 2018-05-15 | 李广信 | Extruding and removing soil complex superposition is nested drilling tool, the back taper stepped ramp type stake of CFG reducings and method |
| CN109837888A (en) * | 2019-01-04 | 2019-06-04 | 刘录怀 | A kind of pile foundation enlarged footing operational method |
| CN110424386A (en) * | 2019-07-15 | 2019-11-08 | 李承涛 | A kind of high tensile steel tube concrete-pile |
| CN110424386B (en) * | 2019-07-15 | 2021-08-13 | 浙江乐科建设有限公司 | High-strength steel pipe concrete pile |
| CN112554174A (en) * | 2020-12-30 | 2021-03-26 | 阳光学院 | Crowded ware that expands of cylindric for civil engineering |
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