CN106948762A - The stake of CFG reducing back tapers stepped ramp type and preparation method and drilling tool - Google Patents
The stake of CFG reducing back tapers stepped ramp type and preparation method and drilling tool Download PDFInfo
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- CN106948762A CN106948762A CN201710333352.2A CN201710333352A CN106948762A CN 106948762 A CN106948762 A CN 106948762A CN 201710333352 A CN201710333352 A CN 201710333352A CN 106948762 A CN106948762 A CN 106948762A
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- drilling tool
- linkage
- sleeve drilling
- stepped ramp
- ramp type
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- 238000005553 drilling Methods 0.000 title claims abstract description 193
- 230000001603 reducing effect Effects 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000004567 concrete Substances 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
Abstract
The present invention relates to technical field of buildings, more particularly, to a kind of stake of CFG reducings back taper stepped ramp type and preparation method and drilling tool.The drilling tool includes：Outer sleeve drilling tool, intermediate sleeve drilling tool and the center drilling tool being sequentially coaxially arranged；The center drilling tool is provided with the first linkage；The intermediate sleeve drilling tool is provided with the second linkage；The outer sleeve drilling tool is provided with the 3rd linkage；Each linkage on the drilling tool is superposition phase shell type, by being engaged with auxiliary equipment hoist engine, can finally form a kind of CFG reducings back taper stepped ramp type stake.The CFG reducing back taper stepped ramp type pile bearing capacitys not only have 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, the vertical power vertically downwards in part can be decomposed into the tangential force and normal force of the conical surface, soil around pile forms passive compression chord state and squeezed state, pile peripheral friction force increases, the bearing capacity of single pile is comprehensively improved, settling amount is reduced.
Description
Technical field
The present invention relates to technical field of buildings, more particularly, to a kind of stake of CFG reducings back taper stepped ramp type and preparation method
And drilling tool.
Background technology
In the tide of reform and opening-up, construction industry, which has, to be developed rapidly, and architectural engineering is got over to the design of ground, construction requirement
Come higher, concrete stake and reinforced concrete pile are used widely in the engineerings such as skyscraper, bridge, harbour, in order that concrete stake and steel
The stake of muscle concrete meets bending resistance, anti-shearing, improves the design requirement such as bearing capacity and shockproof requirements, the shape to concrete stake and reinforced concrete pile is entered
Row changes.Design requirement can be not only met, save material consumption, moreover it is possible to improve construction quality and shorten construction speed.
The traditional pile-type built with existing equipment, its vertical and horizontal section be typically not with stake it is long and change it is circular or square
Stake, its bearing capacity is mainly made up of the frictional resistance of stake side and the bottom bearing at stake end.
The content of the invention
It is an object of the invention to provide a kind of stake of CFG reducings back taper stepped ramp type and preparation method and drilling tool, to solve
Traditional pile-type structure type that existing equipment is built is single, the not high technical problem of bearing capacity.
In order to solve the above technical problems, in a first aspect, the present invention provides a kind of drilling tool, it includes：Sequentially coaxially it is arranged
Outer sleeve drilling tool, intermediate sleeve drilling tool and center drilling tool；The center drilling tool is provided with the first linkage；The intermediate sleeve
Drilling tool is provided with the second linkage；The outer sleeve drilling tool is provided with the 3rd linkage；The outer sleeve drilling tool by
During upper lifting, the 3rd linkage can be arranged and be locked on second linkage, second linkage
It can be arranged and be locked on first linkage.
Further, the center drilling tool includes：Hollow drill, retractable drill bit and the first helical blade；Described
One helical blade is axially set on the outer wall of the hollow drill along the hollow drill, and the drill bit is connected to the sky
The lower end of heart drilling rod, first linkage is coaxially disposed in the upper end of the hollow drill, in first linkage
On be provided with first flange disk.
Further, the intermediate sleeve drilling tool includes：First sleeve drilling tool and the second helical blade, second spiral
Blade is axially set on the outer wall of the first sleeve drilling tool along the first sleeve drilling tool, on the first sleeve drilling tool
Multiple earth discharging holes are provided with, second linkage is coaxially disposed in the upper end of the first sleeve drilling tool, described second
The upper end of linkage is provided with second flange disk.
Further, the outer sleeve drilling tool includes：Second sleeve drilling tool, the 3rd helical blade and casing, the described 3rd
Helical blade is axially set on the outer wall of the second sleeve drilling tool along the second sleeve drilling tool, and the second sleeve is bored
Multiple earth discharging holes are provided with tool, the 3rd linkage is arranged at the upper end of the second sleeve drilling tool, and the casing is set
The outer sleeve drilling tool upper end is placed in, and is provided with the casing spring assembly for being connected with steel wire rope of windlass,
Stopping means is set on the spring assembly, the upper end of the 3rd linkage is provided with the 3rd ring flange.
Further, first linkage includes the first cubic cylinder, and the described first cubic cylinder is coaxially arranged with
Section is circular first set hole, and the first set hole is used for the upper end for being fixed on the center drilling tool；
Second linkage includes the second cubic cylinder, and it is square that the described second cubic cylinder, which is coaxially arranged with section,
Second set of hole, second set of hole be used for be inserted in first linkage；
3rd linkage includes cylinder, and the cylinder is coaxially arranged with section for the 3rd set of square hole,
The 3rd set of hole is used to be inserted in second linkage.
In order to solve the above technical problems, second aspect, the present invention also provides a kind of CFG reducings prepared according to the drilling tool
The stake of back taper stepped ramp type, it includes being provided with least two back taper stepped ramp type bodies on main body pile body, the main body pile body.
Further, the cross section of the back taper stepped ramp type body is circle, and vertical section is inverted ladder type.
Further, the angle of the inverted cone disk inclined-plane extended line of the back taper stepped ramp type body and main body pile body central axis
Angular range is preferably：30 °~45 °.
In order to solve the above technical problems, the third aspect, the present invention also provides the drilling tool described in a kind of basis to prepare CFG changes
The method of footpath back taper stepped ramp type stake, it comprises the following steps：
Center drilling tool clockwise/counterclockwise is rotated by power set, is moved down simultaneously；
First linkage of center drilling tool close to intermediate sleeve drilling tool the second linkage when, by auxiliary equipment elevator
Machine lifts outer sleeve drilling tool, and the 3rd linkage of outer sleeve drilling tool is arranged and is locked in the second linkage dress of intermediate sleeve drilling tool
Put, then drive intermediate sleeve drilling tool Synchronous lifting, the second linkage of intermediate sleeve drilling tool is finally arranged and is locked in
On first linkage of center drilling tool, now each linkage is locked mutually；
Making each drilling tool by power set, clockwise/counterclockwise is rotated simultaneously, and is moved down；
When each drilling tool is drilled into respective projected depth, stop operating, rig master winch lifting center drilling tool, center drilling tool
Lower end drill bit is opened, concrete pump startup, starts pressure concrete injecting, lifting center drilling tool, lifts intermediate sleeve successively afterwards in pressure concrete injecting
Drilling tool, outer sleeve drilling tool, until outer sleeve drilling tool proposes aperture absolute altitude, while concrete also presses filling to designed elevation.
Further, comprise the following steps during the auxiliary equipment hoist engine lifting outer sleeve drilling tool：
One casing is installed on outer sleeve drilling tool, spring assembly is provided with casing, auxiliary equipment hoist engine passes through
Steel wire rope, spring assembly and casing are connected, and enable the 3rd linkage of outer sleeve drilling tool certainly using the elasticity of spring assembly
It is dynamic to be set on the second linkage of intermediate sleeve drilling tool；Similarly make the of intermediate sleeve drilling tool using the elasticity of spring assembly
Two linkages can automatic insertion on the first linkage of center drilling tool, and on spring assembly set limited location fill
Put, when the deformation quantity of spring assembly reaches preset length, stopping means control auxiliary equipment hoist engine is stopped.
Using above-mentioned technical proposal, the present invention has the advantages that：
The invention provides a kind of drilling tool, each linkage on the drilling tool is superposition phase shell type, is rolled up with auxiliary equipment
The machine of raising is engaged, and so as to form multiple back taper stepped ramp type drillings, drilling tool is lifted successively, and pressure concrete injecting is achieved one kind simultaneously
The stake of CFG reducing back tapers stepped ramp type.
The invention provides a kind of stake of CFG reducings back taper stepped ramp type, its bearing capacity not only has the shaft resistance of traditional pile body
Power and stake end bottom bearing, 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 and normal force of the conical surface, soil around pile form passive compression chord state and squeezed state, and pile peripheral friction force increase is comprehensive
The bearing capacity of single pile is improved, settling amount is reduced.Structural change function, the bearing capacity Ke Yong Tai Shaji (Terzagh of this
I) bearing capacity formulas is calculated.
The invention provides a kind of preparation method, this method by the way that drilling tool is combined with auxiliary equipment hoist engine so that
Form the CFG reducing back tapers stepped ramp type stake with said structure and function.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation that drilling tool of the present invention is in original state；
Fig. 2 is the structural representation that drilling tool of the present invention is in lifting state；
Fig. 3 is the structural representation of center drilling tool of the present invention；
Fig. 4 is the structural representation of the first linkage of the invention；
Fig. 5 is the structural representation of intermediate sleeve drilling tool of the present invention；
Fig. 6 is the structural representation of the second linkage of the invention；
Fig. 7 is the structural representation of outer sleeve drilling tool of the present invention；
Fig. 8 is the structural representation of the 3rd linkage of the invention；
Fig. 9 is the structural representation of CFG reducings back taper stepped ramp type of the present invention stake；
Figure 10 to Figure 16 is the construction procedure schematic diagram of drilling tool of the present invention.
In figure, 1 is hoist engine, and 2 be drilling tool centered on steel wire rope, 3, and 31 be first flange disk, and 32 be the first linkage,
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, and 42 be the
Two linkages, 43 be the first sleeve drilling tool, and 44 be the second helical blade, and 45 is bore earth discharging hole, and 5 be outer sleeve drilling tool, and 51 are
3rd ring flange, 52 be the 3rd linkage, and 53 be second sleeve drilling tool, and 54 be the 3rd helical blade, and 55 be brill earth discharging hole, 56
It is main body pile body for casing, 71,72 be back taper stepped ramp type body；8 be concrete pump.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Embodiment one
With reference to shown in Fig. 1 to Fig. 2, the present embodiment provides a kind of drilling tool, and it includes：The outer sleeve drilling tool being sequentially coaxially arranged
5th, intermediate sleeve drilling tool 4 and center drilling tool 3；The center drilling tool 3 is provided with the first linkage 32；The intermediate sleeve drilling tool
4 are provided with the second linkage 42；The outer sleeve drilling tool 5 is provided with the 3rd linkage 52；In the quilt of outer sleeve drilling tool 5
When being lifted up, the 3rd linkage 52 can be arranged and be locked on second linkage 42, and described second
Dynamic device 42 can be arranged and be locked on first linkage 32.
It can be seen that, each linkage of drilling tool is each linkage on superposition phase shell type, the drilling tool in the present embodiment
It can be engaged with auxiliary equipment hoist engine 1, so as to form multiple back taper stepped ramp type drillings, drilling tool be lifted successively and is pressed simultaneously
Fill concrete and be achieved a kind of CFG reducings back taper stepped ramp type stake.
With reference to shown in Fig. 3 to Fig. 4, center drilling tool described in the present embodiment 3 includes：Hollow drill 33, retractable drill bit
35 and first helical blade 34；First helical blade 34 is axially set in the hollow drill along the hollow drill 33
On 33 outer wall, the drill bit 35 is connected to the lower end of the hollow drill 33, first linkage 32 be coaxially disposed in
The upper end of the hollow drill 33, first flange disk 31 is provided with first linkage 32.
With reference to shown in Fig. 5 to Fig. 6, intermediate sleeve drilling tool described in the present embodiment 4 includes：First sleeve drilling tool 43 and second
Helical blade 44, second helical blade 44 is axially set in the first sleeve drilling tool along the first sleeve drilling tool 43
On 43 outer wall, multiple earth discharging holes 45 are provided with the first sleeve drilling tool 43, second linkage 42 is coaxially disposed
In the upper end of the first sleeve drilling tool 43, the upper end of second linkage 42 is provided with second flange disk 41.
What deserves to be explained is, intermediate sleeve drilling tool 4 can be nested by multiple superpositions according to design requirement and be constituted.Intermediate sleeve is bored
When tool 4 is nested by multiple superpositions, in addition to sleeve diameter and length are different, structure all same.
With reference to shown in Fig. 7 to Fig. 8, outer sleeve drilling tool described in the present embodiment 5 includes：Second sleeve drilling tool 53, the 3rd spiral shell
Vane piece 54 and casing 56, the 3rd helical blade 54 are axially set in described second set along the second sleeve drilling tool 53
On the outer wall of cylinder drilling tool 53, multiple earth discharging holes 55 are provided with the second sleeve drilling tool 53, the 3rd linkage 52 is set
On the inside of the upper end for being placed in the second sleeve drilling tool 53, the casing 56 is arranged at outside the upper end of the second sleeve drilling tool 53
Side, and be provided with the casing 56 on the spring assembly for being connected with the steel wire rope 2 of hoist engine 1, the spring assembly and set
Stopping means is put, bullet Huang device, which stretches or contracts to stopping means to a certain degree, makes its auxiliary equipment hoist engine 1 be stopped, and limits
Wei Installed put realization and are automatically stopped action.The upper end of 3rd linkage 52 is provided with the 3rd ring flange 51.
What deserves to be explained is, the first helical blade 34, the second helical blade 44 and the 3rd helical blade 54 both can be for just
Spirally, or backpitch formula, no longer limit to herein.
The geometry of linkage in the present embodiment can also flexibly be set according to actual needs, with following a kind of excellent
Mode is selected to illustrate：
First linkage 32 includes the first cubic cylinder, and it is circle that the described first cubic cylinder, which is coaxially arranged with section,
The first set hole of shape, the first set hole is used for the upper end for being fixed on the hollow drill 33；Second linkage 42 is wrapped
The second cubic cylinder is included, the described second cubic cylinder is coaxially arranged with section for second set of square hole, and second set of hole is used
In being inserted in first linkage 32；3rd linkage 52 includes cylinder, and the cylinder, which is coaxially arranged with, to be cut
Face is the 3rd set of square hole, and the 3rd set of hole is used to be inserted in second linkage 42.
Wherein, the linkage upper end of each drilling tool is provided with the flange with diameter greater than square column type cross section diagonal
Its function of disk：Promote corresponding linkage interlocking in place；The vertical pressure of center drilling tool 3 is passed into other sleeve drilling tools.
To sum up, the drilling tool in the present embodiment can coordinate auxiliary equipment to use, auxiliary equipment by hoist engine 1, steel wire rope 2,
Casing 56 is constituted.This kind of drilling tool connection is mainly realized with combining by the linkage that can be unlocked on drilling tool.Specifically, in rig
Unit head lower end sets hoist engine 1, and hoist engine 1 connects the casing 56 slided up and down by steel wire rope 2.The auxiliary equipment is linkage
Device interactive provides service.Auxiliary equipment, linkage cause many sleeve drilling tool pore-formings for the drilling of multiple back taper stepped ramp types, successively
Pressure concrete injecting is achieved a kind of CFG reducings back taper stepped ramp type stake to lifting drilling tool simultaneously.
Embodiment two
With reference to shown in Fig. 9, the present embodiment two also provides one kind on the basis of embodiment one and bored according to embodiment one
Has the CFG reducing back tapers stepped ramp types stake prepared, it, which includes being provided with least two on main body pile body 71, the main body pile body 71, falls
Bore stepped ramp type body 72.Preferably, each section of cross section on main body pile body 71 is continually changing from top to bottom.
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 side of main body pile body 71 is slightly less than with the angle angle of horizontal plane or equal to 90 °.
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：30 °~45 °.
Preferably, the main body pile body 71 can be inserted with steel reinforcement cage according in design requirement pile body.
To sum up, the CFG reducing back tapers stepped ramp type stake that the present embodiment is provided is included on main body pile body 71, the main body pile body 71
At least two back taper stepped ramp type bodies 72 are provided with, its 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 forms passive compression chord state and squeezed state, and pile peripheral friction force increase comprehensively improves holding for single pile
Power is carried, settling amount is reduced.
Embodiment three
With reference to shown in Figure 10 to Figure 16, the present embodiment three also provides a kind of drilling tool according to embodiment one to prepare
The method of CFG reducing back tapers stepped ramp type stake, it comprises the following steps：
By power set (for example：Power motor) clockwise/counterclockwise of center drilling tool 3 is rotated, move 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
(specifically, hoist engine 1 lifts casing 56 to the standby lifting outer sleeve of hoist engine 1 drilling tool 5 by steel wire rope 2, and casing 56 drives lifting outer
Sleeve drilling tool 5), the 3rd linkage 52 of outer sleeve drilling tool 5 is arranged and is locked in the second linkage of intermediate sleeve drilling tool 4
On 42, the Synchronous lifting of intermediate sleeve drilling tool 4 is then driven, the second linkage 42 of intermediate sleeve drilling tool 4 is finally arranged and locked
Due on the first linkage 32 of center drilling tool 3, now each linkage locks mutually that (interlocking here at least can be with
It is interpreted as radially spacing, also there is corresponding position-limiting action in the presence of hoist engine 1 on axial direction certainly)；
By power set (for example：Power motor) making each drilling tool, clockwise/counterclockwise is rotated simultaneously, and to moving down
It is dynamic；
When each drilling tool is drilled into respective projected depth, stop operating, rig master winch lifting center drilling tool 3, center drilling tool 3
Lower end drill bit 35 open and (expose discharging opening), concrete pump 8 starts, start pressure concrete injecting, the lifting center drilling tool 3 in pressure concrete injecting, it
Lifting intermediate sleeve drilling tool 4, outer sleeve drilling tool 5 successively afterwards, (wherein, the horizontal interface dimensions of drill bit 35 are slightly larger than intermediate sleeve drilling tool 4
Bottom size, last helical layer blade of the isometrical helical blade lower end of intermediate sleeve drilling tool 4, gradual change helical blade is free of, transversal
Face size is slightly larger than the sleeve-port internal diameter of outer sleeve drilling tool 5), until outer sleeve drilling tool 5 proposes aperture absolute altitude, while concrete also presses filling extremely
Designed elevation.
Further, comprise the following steps during the lifting of the auxiliary equipment hoist engine 1 outer sleeve drilling tool 5：Bored in outer sleeve
One casing 56 is installed on tool 5, spring assembly is provided with casing 56, auxiliary equipment hoist engine 1 passes through steel wire rope 2, spring
Device is connected with casing 56, and the automatic insertion of the 3rd linkage 52 of outer sleeve drilling tool 5 is enable using the elasticity of spring assembly
On the second linkage 42 of intermediate sleeve drilling tool 4；Similarly make the second of intermediate sleeve drilling tool using the elasticity of spring assembly
Linkage can automatic insertion on the first linkage of center drilling tool.And set limited location to fill on spring assembly
Put, when the deformation quantity of spring assembly reaches preset length, stopping means control auxiliary equipment hoist engine 1 is stopped.
The principle of back taper stepped ramp type body 72 is set：Pile foundation or basement process scope internal upper part are with existing (more than level of ground water)
Two or more back taper stepped ramp type bodies can be set when Rotating fields stabilization, the stratum that compressibility is smaller, bearing capacity is higher, thickness is larger
72。
Note：During rig master winch lifting drilling tool, auxiliary equipment hoist engine 1 accordingly coordinates.Intermediate sleeve drilling tool 4 is many
During number, such a linkage is stackable to be nested interlocking in place, forms the stake of inverted ladder type multi-step back taper stepped ramp type.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of drilling tool, it is characterised in that including：Outer sleeve drilling tool, intermediate sleeve drilling tool and the centre drill being sequentially coaxially arranged
Tool；The center drilling tool is provided with the first linkage；The intermediate sleeve drilling tool is provided with the second linkage；The overcoat
Cylinder drilling tool is provided with the 3rd linkage；When the outer sleeve drilling tool is moving upward, the 3rd linkage can cover
And if be locked on second linkage, second linkage can be arranged and be locked in first linkage
On.
2. drilling tool according to claim 1, it is characterised in that the center drilling tool includes：Hollow drill, retractable brill
Head and the first helical blade；The outer wall that is axially set in the hollow drill of first helical blade along the hollow drill
On, the drill bit is connected to the lower end of the hollow drill, and first linkage is coaxially disposed in the hollow drill
Upper end, first flange disk is provided with first linkage.
3. drilling tool according to claim 2, it is characterised in that the intermediate sleeve drilling tool includes：First sleeve drilling tool and
Second helical blade, the be axially set in first sleeve drilling tool of second helical blade along the first sleeve drilling tool
On outer wall, multiple earth discharging holes are provided with the first sleeve drilling tool, second linkage is coaxially disposed in described first
The upper end of sleeve drilling tool, second flange disk is provided with the upper end of second linkage.
4. drilling tool according to claim 3, it is characterised in that the outer sleeve drilling tool includes：Second sleeve drilling tool, the 3rd
Helical blade and casing, the 3rd helical blade are axially set in the second sleeve drilling tool along the second sleeve drilling tool
Outer wall on, multiple earth discharging holes are provided with the second sleeve drilling tool, the 3rd linkage is arranged at described second set
The upper end of cylinder drilling tool, the casing is arranged at the outer sleeve drilling tool upper end, and is provided with and is used for and elevator on the casing
Stopping means is set on the connected spring assembly of machine steel wire rope, the spring assembly, set in the upper end of the 3rd linkage
It is equipped with the 3rd ring flange.
5. drilling tool according to claim 2, it is characterised in that
First linkage includes the first cubic cylinder, and it is circular that the described first cubic cylinder, which is coaxially arranged with section,
A set of hole, the first set hole is used for the upper end for being fixed on the center drilling tool；
Second linkage includes the second cubic cylinder, and it is square that the described second cubic cylinder, which is coaxially arranged with section,
Two sets of holes, second set of hole is used to be inserted in first linkage；
3rd linkage includes cylinder, and the cylinder is coaxially arranged with section for the 3rd set of square hole, described
3rd set of hole is used to be inserted in second linkage.
6. a kind of CFG reducing back tapers stepped ramp type stake that in 1-5 according to claim prepared by drilling tool described in any one, its feature exists
In being provided with least two back taper stepped ramp type bodies on, including main body pile body, the main body pile body.
7. CFG reducings back taper stepped ramp type stake according to claim 6, it is characterised in that the horizontal stroke of the back taper stepped ramp type body
Section is circle, and vertical section is inverted ladder type.
8. CFG reducings back taper stepped ramp type according to claim 6 stake, it is characterised in that the back taper stepped ramp type body falls
The angle angular range of Cone Disc inclined-plane extended line and main body pile body central axis is：30 °~45 °.
9. method of the drilling tool to prepare the stake of CFG reducing back tapers stepped ramp type in a kind of 1-5 according to claim described in any one,
It is characterised in that it includes following steps：
Center drilling tool clockwise/counterclockwise is rotated by power set, is moved down simultaneously；
First linkage of center drilling tool close to intermediate sleeve drilling tool the second linkage when, carried by auxiliary equipment hoist engine
Outer sleeve drilling tool is risen, the 3rd linkage of outer sleeve drilling tool is arranged and is locked in the second linkage of intermediate sleeve drilling tool
On, intermediate sleeve drilling tool Synchronous lifting is then driven, during the second linkage of intermediate sleeve drilling tool is finally arranged and is locked in
On first linkage of heart drilling tool, now each linkage is locked mutually；
Making each drilling tool by power set, clockwise/counterclockwise is rotated simultaneously, and is moved down；
When each drilling tool is drilled into respective projected depth, stop operating, rig master winch lifting center drilling tool, the lower end of center drilling tool
Drill bit is opened, concrete pump startup, starts pressure concrete injecting, the lifting center drilling tool in pressure concrete injecting, afterwards successively lifting intermediate sleeve drilling tool,
Outer sleeve drilling tool, until outer sleeve drilling tool proposes aperture absolute altitude, while concrete also presses filling to designed elevation.
10. the method for preparing the stake of CFG reducing back tapers stepped ramp type according to claim 9, it is characterised in that the auxiliary
Equipment hoist engine comprises the following steps when lifting outer sleeve drilling tool：
One casing is installed on outer sleeve drilling tool, spring assembly is provided with casing, auxiliary equipment hoist engine passes through steel wire
Rope, spring assembly and casing are connected, and the 3rd linkage for enabling outer sleeve drilling tool using the elasticity of spring assembly is worn automatically
It is enclosed within the second linkage of intermediate sleeve drilling tool；Similarly make the second of intermediate sleeve drilling tool using the elasticity of spring assembly
Dynamic device can automatic insertion on the first linkage of center drilling tool, and be provided with spring assembly stopping means,
When the deformation quantity of spring assembly reaches preset length, stopping means control auxiliary equipment hoist engine is stopped.
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| CN109025809A (en) * | 2018-10-11 | 2018-12-18 | 李广信 | More power guide position linkage combination drill tools, preparation method and pile-type |
| CN109098655A (en) * | 2018-10-11 | 2018-12-28 | 李广信 | More Power compound drilling tools, preparation method and type stake |
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| CN106948762B (en) | 2023-12-08 |
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Application publication date: 20170714 Assignee: Hebei cone base civil engineering Co.,Ltd. Assignor: Li Guangxin Contract record no.: 2018990000103 Denomination of invention: CFG variable diameter inverted cone step type pile, preparation method and drilling tool License type: Exclusive License Record date: 20180419 |
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