CN209244509U - More Power compound drilling tools - Google Patents
More Power compound drilling tools Download PDFInfo
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- CN209244509U CN209244509U CN201821650172.3U CN201821650172U CN209244509U CN 209244509 U CN209244509 U CN 209244509U CN 201821650172 U CN201821650172 U CN 201821650172U CN 209244509 U CN209244509 U CN 209244509U
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Abstract
The utility model relates to technical field of civil engineering, more particularly, to a kind of more Power compound drilling tools.The drilling tool includes: the lower power drilling tool, middle power drilling tool and upper power drilling tool being sequentially coaxially nested；The lower power drilling tool, middle power drilling tool and upper power drilling tool are respectively equipped with a power mechanism；The lower power drilling tool, middle power drilling tool and upper power drilling tool at least one of had by one squeeze, the tool body of casting complex function is constituted.When the combination drill tool is constructed, each drilling tool is converted into the mode of active drive by traditional linked manner, and soil compaction, casting are simultaneously all into and can disposably completing pore-forming and concrete pressure fills pile, high degree of automation realizes the raising of work efficiency；The variable diameter of pile body, reasonable engineering method, so that bearing capacity of single pile is further to be improved, to reduce costs；The above composite factor shortens the duration.
Description
Technical field
The utility model relates to technical field of civil engineering, more particularly, to a kind of more Power compound drilling tools.
Background technique
In the engineerings treatment of soft foundation such as building structure or bridge, harbour, railway, highway, airport, water conservancy and hydropower facility, need
The foundation soil for carrying out disposal field soil can generally be divided into weak field according to mean shear wave velocity value changing rule from shallow to deep
Ground soil, in soft Site Soil, Moderate stiff soil sites soil, hard ground soil.It can be with according to the soft or hard degree of Site Soil and each clay distribution situation
Foundation soil is simply divided into soil compaction area (Soft site soil, in soft Site Soil, wherein water content it is higher or saturation stickiness earth removal
Outside)；Casting area (outside Moderate stiff soil sites soil, hard ground earth removal).
To improve the bearing capacity of foundation soil and improving the compression modulus of foundation soil, generally takes and be with pile body displacement foundation soil
Main long screw auger pressure deposited pile-CFG pile work method.In recent years again develop some novel soil compaction engineering methods, as Screw Pile (screw rod pile and
Shallow thread stake), bidirectional screw soil compaction stake (abbreviation SDS).The above soil compaction engineering method is increased by improving equipment, increasing self weight
Power mechanism kinetic energy is allowed to special drilling tool torque and becomes larger.When the above drilling tool pore-forming based on soil compaction, creeps into and soil compaction is deep to design
After degree, mentioning brill, pressure concrete injecting pile therefore is unearthed amount seldom to designed elevation simultaneously, has encrypted soil around pile compactness.
The above two engineering method bearing capacity for increasing foundation soil all different degrees of in various stratum.But it is more for complexity
The foundation soil of sample, drilling tool function used in two kinds of engineering methods is more single, in the weak soil of shallow-layer, can soil compaction area, CFG pile work method
Can only substitute simply soil, cause soil around pile side friction reduction；In the harder casting area of deep layer, Screw Pile or SDS pile work method
Further high torque is gone squeezed, is caused drilling difficult, is influenced work efficiency.Such as to closely knit sandy soil, attempt it is squeezed it, but break
Its compact structure reduces its intensity, or even dilative shear failure occurs, and side friction and end resistance reduce instead.Two kinds of engineering methods
Single-function, be unable to adaptation to local conditions Ground Treatment soil, cause certain cost waste, affect bearing capacity of single pile performance
Effect.In order to solve the above problem, according to rock-soil mechanics theory, weak soil is preferably squeezed when basement process, and pan soil is preferably arranged, and utility model is badly in need of
A kind of combination drill tool, both the above engineering method sets of advantages on a kind of drilling tool, to fill up ground circle ground treatment construction method not
Enough, a kind of extruding and removing soil combination drill tool is developed birth.
The extruding and removing soil combination drill tool technology reference that this patent is related to: utility model patent: 201820124401.1, it is practical
New Name: a kind of extruding and removing soil combination drill tool and CFG extruding and removing soil stake.(utility model patent is in the substantive examination stage)
The information disclosed in the background technology section is intended only to deepen the reason to the general background technology of the utility model
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Utility model content
The purpose of this utility model is to provide a kind of more Power compound drilling tools, to solve equipment existing in the prior art
Automatic degree is low, and engineering method is single, and pile-type is single, bad adaptability and the not high technical problem of bearing capacity of single pile.
To achieve the goals above, the utility model uses following technical scheme:
In a first aspect, the utility model provides a kind of more Power compound drilling tools comprising: the lower power being sequentially coaxially nested
Drilling tool, middle power drilling tool and upper power drilling tool；The lower power drilling tool, middle power drilling tool and upper power drilling tool are respectively equipped with one
Power mechanism, the power mechanism can be operated alone its correspondence drilling tool and be rotated；The lower power drilling tool, middle power drilling tool
With upper power drilling tool at least one of had by one squeeze, the tool body of casting complex function is constituted, the tool body
The outer diameter of core pipe gradually increases from bottom to top, and is changed according to scheduled soil compaction ratio；During the soil compaction ratio is defined as
Core pipe overall diameter and tool body diameter ratio；The width of the helical blade of the tool body is gradually reduced from bottom to top, with
It is distributed the outer profile of all helical blades in equal diameter.
As a kind of further technical solution, the lower power drilling tool includes: lower power head and outer sleeve drilling tool；It is described
Lower power head is set to the upper end of the outer sleeve drilling tool, for driving the outer sleeve drilling tool to carry out spinning movement；It is described outer
Sleeve drilling tool uses the extruding and removing soil combination drill tool main body based on soil compaction.
As a kind of further technical solution, the lower power drilling tool further include: lower casting slot；The lower casting slot is set
It is placed in the upper end of the lower power head.
As a kind of further technical solution, the middle power drilling tool include: middle power head, intermediate sleeve drilling tool and in
Lifting device；The middle power head is set to the upper end of the intermediate sleeve drilling tool, for drive the intermediate sleeve drilling tool into
Row spinning movement；The middle lifting device is set to the lower end of the middle power head, for driving the lower power drilling tool to carry out
Lifting action；The intermediate sleeve drilling tool uses the extruding and removing soil combination drill tool main body based on soil compaction.
As a kind of further technical solution, the middle power drilling tool further include: middle casting slot and middle limiting device, institute
State the upper end that middle casting slot is set to the middle power head；The middle limiting device is set to the lower end of the middle power head.
As a kind of further technical solution, the upper power drilling tool includes: upper power head, center drilling tool and upper promotion
Device；The upper power head is set to the upper end of the center drilling tool, for driving the center drilling tool to carry out spinning movement；Institute
The lower end that lifting device is set to the upper power head is stated, for driving the middle power drilling tool to carry out lifting action；It is described
Center drilling tool uses the casting drilling tool with casting function, and the numberical range of the soil compaction ratio of the casting drilling tool less than 0.6 and is
Certain value；/ center the drilling tool uses based on soil compaction, and supplemented by casting, casting is also the extruding and removing soil combination drill tool of soil compaction service
Main body.
As a kind of further technical solution, the upper power drilling tool further include: position limit device；The upper limit dress
Install the lower end for being placed in the upper power head.
As a kind of further technical solution, further includes: pressurizing device, the pressurizing device are set to the upper power
Any one among drilling tool and the middle power drilling tool.
Second aspect, the utility model also provide a kind of type stake according to more Power compound drilling tool preparations comprising:
Main body pile body；
At least two back taper stepped ramp type bodies are provided on the main body pile body；
The inverted cone disk inclined-plane extended line of the back taper stepped ramp type body and the included angle of the main body pile body central axis
Range are as follows: 5 °~90 °.
The third aspect, the utility model provide again it is a kind of according to more Power compound drilling tools in the method for preparative stake,
Comprising:
Demand according to stratum to engineering method, the upper power drilling tool, middle power drilling tool and lower power drilling tool successively bore successively
To respective projected depth, so as to form multiple back taper stepped ramp type drillings；Start concrete pump, starts pressure concrete injecting, in pressure concrete injecting
It successively promotes upper power drilling tool, middle power drilling tool and lower power drilling tool successively, synchronizes and mention after each power drilling tool bottom end is successively concordant
Rise, until mention aperture absolute altitude, while concrete also press and fills pile to designed elevation, realize it is disposable complete pore-forming and the filling of concrete pressure at
Stake.
By adopting the above technical scheme, the utility model has the following beneficial effects:
The utility model provides a kind of more Power compound drilling tools, the lower power drilling tool of the drilling tool, middle power drilling tool and on
Power drilling tool is respectively equipped with a power mechanism, its correspondence drilling tool is operated alone by power mechanism realization and is rotated, this is more
When Power compound drilling tool is constructed, each drilling tool is converted into the driving method of active by traditional linked manner, can be disposable
It completes pore-forming and concrete pressure fills pile, high degree of automation realizes the raising of work efficiency, and the raising of bearing capacity of single pile reduces simultaneously
Cost, shortens the duration；It is adaptable, it is conducive to promote and applies.
The utility model provides a kind of type stake prepared according to more Power compound drilling tools, and bearing capacity not only includes tradition
The pile side friction and stake end bottom bearing of pile body, and the back taper disk inclined-plane of back taper stepped ramp type body, can be vertical vertical part
Downward power is decomposed into the tangential force and normal force of the conical surface, and soil around pile forms passive compression chord state and squeezed state, increases
Pile perimeter resistance, improves the bearing capacity of single pile, can reduce settling amount.This superficial part inversed taper platform part bearing capacity is available too husky
The shallow water oil field formula of base (Terzaghi) calculates.The utility model is to solve traditional drilling tool single-function and making simultaneously
At adverse effect and propose, and it is an object of the present invention to provide a kind of for the squeezing of compound foundation pile or pile foundation stake, casting composite 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
Pile is filled, realizes the raising of work efficiency, bearing capacity of single pile further improves, and reduces costs simultaneously, shortens the 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 independence
The power mechanism of driving combines, the demand according to stratum to engineering method, the upper power drilling tool, middle power drilling tool and lower power drill
Tool is successively drilled into respective projected depth successively, so as to form multiple back taper stepped ramp type drillings；Start concrete pump, starts pressure and fill
Concrete successively promotes upper power drilling tool, middle power drilling tool and lower power drilling tool in pressure concrete injecting successively, and each power drilling tool bottom end is successively
Synchronous lifting after concordant, until mentioning aperture absolute altitude, while concrete also presses and fills pile to designed elevation, realization is disposable to complete pore-forming
It is pressed with concrete and fills pile, to form the 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 is the structural schematic diagram of more Power compound drilling tool original states provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram that more Power compound drilling tools provided by the embodiment of the utility model creep into state；
Fig. 3,4 be upper power drilling tool provided by the embodiment of the utility model structural schematic diagram；
Fig. 5 is the positive structure schematic of upper power head provided by the embodiment of the utility model；
Fig. 6 is the structural schematic diagram of middle power drilling tool provided by the embodiment of the utility model；
Fig. 7 is the positive structure schematic of middle power head provided by the embodiment of the utility model；
Fig. 8 is the structural schematic diagram of middle casting slot provided by the embodiment of the utility model；
Fig. 9 is the structural schematic diagram of lower power drilling tool provided by the embodiment of the utility model；
Figure 10 is the positive structure schematic of lower power head provided by the embodiment of the utility model；
Figure 11 is working state schematic representation of the drilling machine drilling tool provided by the embodiment of the utility model to positive stake position；
Figure 12 is the working state schematic representation that power drilling tool prepares drilling on drilling machine provided by the embodiment of the utility model；
Figure 13 is the work of the synchronous drilling of power drilling tool in power drilling tool assistance on drilling machine provided by the embodiment of the utility model
Make status diagram；
Figure 14 be drilling machine provided by the embodiment of the utility model in power drilling tool upper power drilling tool assistance under with lower power
Drilling tool is synchronous to creep into the working state schematic representation of default stake depth；
Figure 15 is synchronized and is drilled into respectively in advance for power drilling tool in drilling machine provided by the embodiment of the utility model and lower power drilling tool
If upper power drilling tool continues to creep into the working state schematic representation of default stake depth after stake depth；
Figure 16 is that concrete provided by the embodiment of the utility model pumps pressure concrete injecting, at the same promoted upper power drilling tool to middle power drill
Has the concordant working state schematic representation in bottom end；
Figure 17 be concrete provided by the embodiment of the utility model pump pressure concrete injecting, simultaneously, on Synchronous lifting, middle power drilling tool to
The concordant working state schematic representation in lower power drilling tool bottom end；
Figure 18 be concrete provided by the embodiment of the utility model pump pressure concrete injecting, simultaneously, on Synchronous lifting, middle power drilling tool and under
Power drilling tool to stake holes mouth absolute altitude working state schematic representation；
Figure 19 is working state schematic representation of the drilling machine drilling tool that provides of another embodiment of the utility model to positive stake position；
Power drilling tool prepares the working condition signal of drilling on the drilling machine that Figure 20 provides for another embodiment of the utility model
Figure；
The working state schematic representation of power drilling tool drilling on the drilling machine that Figure 21 provides for another embodiment of the utility model；
Figure 22 is on the drilling machine that provides of another embodiment of the utility model, the working condition of the synchronous drilling of middle power drilling tool is shown
It is intended to；
Figure 23 is that upper, the middle power drilling tool that another embodiment of the utility model provides and lower power drilling tool are synchronized and crept into each
From the working state schematic representation of default stake depth；
Figure 24 is that the concrete that another embodiment of the utility model provides pumps pressure concrete injecting, while promoting upper power drilling tool and moving to in
The concordant working state schematic representation in power drilling tool bottom end；
Figure 25 is that the concrete that provides of another embodiment of the utility model pumps pressure concrete injecting, simultaneously, on Synchronous lifting, middle power drilling tool
To the working state schematic representation concordant with lower power drilling tool bottom end；
Figure 26 is that the concrete that provides of another embodiment of the utility model pumps pressure concrete injecting, simultaneously, on Synchronous lifting, middle power drilling tool
And lower power drilling tool is to the working state schematic representation of stake holes mouth absolute altitude；
Figure 27 is that two back taper stepped ramp type bodies up and down of the non-threaded diameter-variable pile of pile body provided by the embodiment of the utility model are equal
For inverted round stage pile-type schematic diagram.
Figure 28 is that the only next back taper stepped ramp type body of the non-threaded diameter-variable pile of pile body provided by the embodiment of the utility model can be
Circle platform pile-type schematic diagram.
Figure 29 is that two back taper stepped ramp type bodies up and down of pile body screw thread diameter-variable pile provided by the embodiment of the utility model are
Inverted round stage pile-type schematic diagram.
Figure 30 is that the only next back taper stepped ramp type body of pile body screw thread diameter-variable pile provided by the embodiment of the utility model can be round
Platform pile-type schematic diagram.
Figure 31 is two back taper stepped ramp types up and down of pile body middle and lower part screw thread diameter-variable pile provided by the embodiment of the utility model
Body is inverted round stage pile-type schematic diagram.
Figure 32 is the only next back taper stepped ramp type body of pile body middle and lower part screw thread diameter-variable pile provided by the embodiment of the utility model
It can be circle platform pile-type schematic diagram.
Figure 33 is two back taper stepped ramp types up and down of pile body middle and upper part screw thread diameter-variable pile provided by the embodiment of the utility model
Body is inverted round stage pile-type schematic diagram.
Figure 34 is the only next back taper stepped ramp type body of pile body middle and upper part screw thread diameter-variable pile provided by the embodiment of the utility model
It can be circle platform pile-type schematic diagram.
Figure 35 is two back taper stepped ramp type bodies up and down of screw thread diameter-variable pile in the middle part of pile body provided by the embodiment of the utility model
It is inverted round stage pile-type schematic diagram.
Figure 36 is that the only next back taper stepped ramp type body of screw thread diameter-variable pile in the middle part of pile body provided by the embodiment of the utility model can
For circle platform pile-type schematic diagram.
Icon: the upper power drilling tool of 1-；Power drilling tool in 2-；Power drilling tool under 3-；4- type stake；5- concrete pump；The upper power of 11-
Head；The center 12- drilling tool；The upper lifting device of 13-；14- position limit device；Power head in 21-；22- intermediate sleeve drilling tool；In 23-
Lifting device；Limiting device in 24-；25- pressurizing device；Casting slot in 26-；Power head under 31-；32- outer sleeve drilling tool；36-
Lower casting slot；41- main body pile body；42- back taper stepped ramp type body.
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
The present embodiment provides a kind of more Power compound drilling tools comprising: lower power drilling tool, the middle power being sequentially coaxially nested
Drilling tool and upper power drilling tool；The lower power drilling tool, middle power drilling tool and upper power drilling tool are respectively equipped with a power mechanism, institute
State power mechanism can be operated alone its correspond to drilling tool rotated；The lower power drilling tool, middle power drilling tool and upper power drill
Tool takes suitable engineering method, matches the brill of correspondence according to the soft or hard degree of Site Soil and distribution situation in design pile body depth when construction
Tool is combined.
Site Soil is Moderate stiff soil sites soil (or the overwhelming majority is Moderate stiff soil sites soil) in pile body depth, and way-type drilling unit is equal
For casting drilling tool；
In pile body depth Site Soil be it is weak, in soft Site Soil (or the overwhelming majority for it is weak, in soft Site Soil), group
Bench drill tool is extruding and removing soil drilling tool/(or and soil compaction drilling tool) based on soil compaction；
In pile body depth Site Soil top be it is weak, in soft Site Soil, lower part is Moderate stiff soil sites soil, in way-type drilling unit
Between, outer sleeve drilling tool be extruding and removing soil drilling tool/(or and soil compaction drilling tool) based on soil compaction, center drilling tool is casting drilling tool.
Wherein, the drilling tool of soil compaction is using simultaneous techniques, and soil compaction ratio is certain value, group not less than 0.6 and less than 1.0
Bench drill tool each other screw pitch must be it is equidistant, spiral shell diameter compares suitable soil compaction, the tooth shape thread of the suitable soil compaction of helical blade use.
(shallow thread stake and SDS are related to that drilling tool is complex, and drilling takes soil compaction form to creep into, and engineering method also belongs to soil compaction, but " soil compaction
Than " concept cannot the entirely appropriate drilling tool, therefore the art of this patent is not related to its structure type.)
Wherein, the drilling tool of casting, soil compaction ratio are certain value, and screw pitch by being suitble to the spiral shell diameter of casting than regulation, adopt by helical blade
With the blade of common form.
Wherein, the extruding and removing soil drilling tool based on soil compaction, soil compaction ratio with not less than 0.6 and no more than 1.0 soil compaction sections be it is leading,
And soil compaction ratio is from bottom to top, ascending gradually gradual to 1.0, for screw pitch by being suitble to the spiral shell diameter of soil compaction than regulation, screw pitch can be equidistant,
Preferably from bottom to top, descending gradually gradual.Helical blade can use the detiform blade of non-notch, the outer edge of blade
Thickness is less than inward flange thickness, is inclined-plane from the two sides that outer edge is transitioned into inward flange, and soil is more advantageous to during revolving row
Soil compaction.
Wherein, the extruding and removing soil drilling tool based on casting, soil compaction than be with the casting section less than 0.6 it is leading, screw pitch is by being suitble to
For casting spiral shell diameter than control, screw pitch is preferably isometrical, and helical blade uses the blade of common form.
Based on above-mentioned theory and it is convenient those skilled in the art understand that angle set out, the present embodiment illustrates emphatically wherein
A kind of preferred embodiment, certainly, according to any combination of engineering method variation belong to the protection scope of the utility model.
In conjunction with shown in Fig. 1 to Figure 10, the present embodiment provides a kind of more Power compound drilling tools comprising: sequentially coaxially it is nested
Lower power drilling tool 3, middle power drilling tool 2 and upper power drilling tool 1 (ecto-entad, which is sequentially overlapped, to be nested)；The lower power drilling tool
3, middle power drilling tool 2 and upper power drilling tool 1 are respectively equipped with a power mechanism, its correspondence can be operated alone in the power mechanism
Drilling tool is rotated, it is seen then that and each drilling tool is converted into the driving method of active by passively linked manner, high degree of automation,
It is adaptable, it is conducive to promote and applies；The lower power drilling tool 3, middle power drilling tool 2 and upper power drilling tool 1 at least one of
Had by one squeeze, the tool body of casting complex function is constituted, the outer diameter of the core pipe of the tool body is from bottom to top gradually
Increase, and is changed according to scheduled soil compaction ratio；The soil compaction ratio is defined as core pipe overall diameter and tool body diameter
The ratio between；The width of the helical blade of the tool body is gradually reduced from bottom to top, so that the outer profile of all helical blades is in
Equal diameter distribution (helical blade outer profile size its be tool body diameter).
It is worth noting that those skilled in the art can root for the design of the tool body helical blade
Flexible setting is carried out according to actual needs.Wherein, it shall be understood in a broad sense herein.Such as: when outer sleeve drilling tool 32, intermediate sleeve drilling tool
22 have squeeze, casting complex function when, the helical blade of corresponding tool body the lowermost frustum structure is then not necessarily to meet foreign steamer
Exterior feature in equal diameter distribution rule because this frustum structure can approximation serve as " drill bit " effect use, those setting
It is not necessarily to be arranged according to outer profile in the requirement of equal diameter distribution in the helical blade on " drill bit ".Certainly, more than frustum structure
Position can satisfy the rule that helical blade outer profile is in equal diameter distribution.
Preferably, the lower power drilling tool 3 includes: lower power head 31 and outer sleeve drilling tool 32；The lower power head 31 is set
It is placed in the upper end of the outer sleeve drilling tool 32, for driving the outer sleeve drilling tool 32 to carry out spinning movement；The outer sleeve bores
Tool 32 uses the extruding and removing soil combination drill tool main body based on soil compaction.Further, the lower power drilling tool 3 further include: lower casting
Slot 36；The lower casting slot 36 is set to the upper end of the lower power head 31.Preferably, for the tool of the lower power head 31
Body form is not limited to, and can be fluid pressure drive device, or Vidacare corp.
For the structure of lower power head 31, the shell of the lower power head 31 can be hollow cylindrical, inside have
The casting space communicated with lower casting slot 36.Specifically, the lower casting slot 36 is including a casting case and is set to casting case one
Side and what is be inclined to set lead soil box.The bottom of casting case can be connected by the shell of lower power head 31 with outer sleeve drilling tool 32
Logical, i.e. the part rotation casting of middle sleeve drilling tool 22 is exported through 32 inside of outer sleeve drilling tool, lower power head 31, lower casting slot 36.Outside
Sleeve drilling tool 32 revolves casting and is immediately discharged to aperture.(note: without native delivery port when pure soil compaction.)
For outer sleeve drilling tool 32, third helical blade, the third helical-blade are provided on outer sleeve drilling tool 32
Piece is axially set on the outer wall of the outer sleeve drilling tool 32 along the outer sleeve drilling tool 32.
Preferably, the middle power drilling tool 2 includes: middle power head 21, intermediate sleeve drilling tool 22 and middle lifting device 23；
The middle power head 21 is set to the upper end of the intermediate sleeve drilling tool 22, for driving the intermediate sleeve drilling tool 22 to carry out
Spinning movement；The middle lifting device 23 is set to the lower end of the middle power head 21, for driving the lower power drilling tool 3
Carry out lifting action；The intermediate sleeve drilling tool 22 uses the extruding and removing soil combination drill tool main body based on soil compaction；For middle power
For first 21, structure can refer to the description of above-mentioned lower power head 31.
It, can be there are many mode for middle lifting device 23.
Such as: lifting device 23 includes: hoist engine in this, which is set to the lower end of the middle power head 21, should
The traction rope of hoist engine is connected with lower power drilling tool 3 (preferably descending power head 31).
Another example is: lifting device 23 includes: telescoping cylinder (oil cylinder) in this, telescoping cylinder is set under the middle power head 21
End, the piston rod of the telescoping cylinder are connected with lower power drilling tool 3 (preferably descending power head 31).
For intermediate sleeve drilling tool 22, which is provided with the second helical blade, second spiral shell
Vane piece is axially set on the outer wall of the intermediate sleeve drilling tool along the intermediate sleeve drilling tool.
Preferably, the middle power drilling tool 2 further include: middle casting slot 26 and middle limiting device 24, the middle casting slot 26
It is set to the upper end of the middle power head 21；The middle limiting device 24 is set to the lower end of the middle power head 21.
For middle casting slot 26, casting slot 26 includes a casting case and is set to casting case side and is in incline in this
What is be tiltedly arranged leads soil box.The bottom of casting case can be connected by the shell of middle power head 21 with intermediate sleeve drilling tool 22, i.e., in
The part rotation casting of heart drilling tool 12 is exported through 22 inside of intermediate sleeve drilling tool, middle power head 21, middle casting slot 26.(note: pure soil compaction
When without native delivery port.)
It, can be there are many mode for middle limiting device 24.Such as: limiting device 24 can be rigid connection in this
Bar, the length of the rigid connecting rod is according to practical flexible setting.It may be telescopic connection rod, length is any according to requiring
It adjusts.
It is formed it is worth noting that middle power drilling tool 2 can be nested according to design requirement by multiple superpositions.Middle power drilling tool 2
When being nested by multiple superpositions, in addition to sleeve diameter and length are different, structure is all the same.
Preferably, the upper power drilling tool 1 includes: upper power head 11, center drilling tool 12 and upper lifting device 13；On described
Power head 11 is set to the upper end of the center drilling tool 12, for driving the center drilling tool 12 to carry out spinning movement；On described
Lifting device 13 is set to the lower end of the upper power head 11, for driving the middle power drilling tool 2 to carry out lifting action；It is described
Center drilling tool 12 using have casting function casting drilling tool, the numberical range of the soil compaction ratio of the casting drilling tool less than 0.6 and
Person is certain value；/ center the drilling tool uses based on soil compaction, and supplemented by casting, casting is also that the extruding and removing soil of soil compaction service is compound
Tool body.
For upper power head 11, structure, form and its power head 21,31 are substantially similar outer, in addition add slip casting
(bend pipe one end communicates (concrete) union elbow with center drilling tool core pipe, the other end and concrete conveyance high-pressure hose phase
Connect), power top head is additionally provided with suspension centre, is connect with drilling machine master winch by wirerope, no casting slot setting.
It, can be there are many mode for upper lifting device 13.
Such as: lifting device 13 includes: hoist engine on this, which is set to the lower end of the upper power head 11, should
The traction rope of hoist engine is connected with middle power drilling tool 2 (power head 21 in preferably).
Another example is: lifting device 13 includes: telescoping cylinder (oil cylinder) on this, telescoping cylinder is set under the upper power head 11
End, the piston rod of the telescoping cylinder are connected with middle power drilling tool 2 (power head 21 in preferably).
Further, the upper power drilling tool 1 further include: position limit device 14；The position limit device 14 is set to institute
State the lower end of power head 11.It, can be there are many mode for position limit device 14.Such as: the position limit device 14 can
Think rigid connecting rod, the length of the rigid connecting rod is according to practical flexible setting.It may be telescopic connection rod, length
According to requiring any adjusting.
In addition, the present embodiment further include: pressurizing device 25, the pressurizing device 25 are set to 1 He of upper power drilling tool
Any one among the middle power drilling tool 2.
Certainly, for pressurizing device 25, can be self-possessed according to power mechanism, geological conditions and design requirement are flexibly set
It sets, it is preferred that the pressurizing device 25 can be hoist engine, and hoist engine is set on drilling machine platform, and the traction rope of hoist engine is logical
Cross times among a directive wheel and the upper power drilling tool 1 (upper power head 11) and the middle power drilling tool 2 (middle power head 21)
One of anticipating connection.Pressurizing device 25 or hydraulic cylinder, cylinder tube are fixedly installed on boring tower suitable position, oil cylinder piston
Bar top with it is any one among the upper power drilling tool 1 (upper power head 11) and the middle power drilling tool 2 (middle power head 21)
Person's connection.
Embodiment two
In conjunction with shown in Figure 11 to Figure 26, the present embodiment two provide again it is a kind of according to more Power compound drilling tools with preparative
The method of stake 4 comprising: the demand according to stratum to engineering method, the upper power drilling tool 1, middle power drilling tool 2 and lower power drilling tool
3 are successively drilled into respective projected depth successively；Start concrete pump 5, start pressure concrete injecting, successively promotes upper power drill successively in pressure concrete injecting
Tool 1, middle power drilling tool 2 and lower power drilling tool 3, until successively concordant rear Synchronous lifting goes out aperture absolute altitude for each power drilling tool bottom end,
Concrete, which is also pressed, simultaneously fills pile to designed elevation.
In the treatments of soft foundation such as building structure or railway, highway, need to carry out the foundation soil of disposal field soil from shallow to deep
According to mean shear wave velocity value changing rule can generally be divided into Soft site soil (soil layer average clearance method≤140m/s), in
Soft Site Soil (140m/s < soil layer average clearance method≤250m/s), native (the 250m/s < soil layer average shear wave of Moderate stiff soil sites
Speed≤500m/s), hard ground it is native (500m/s < soil layer shear wave velocity).
Soft, hard degree and each clay distribution situation according to Site Soil in pile body depth bounds, in conjunction with the soft ground for squeezing, arranging firmly
Engineering method theory, preferably more Power compound drill assembly forms are divided into two kinds: 1, more Power compound drill assembly squeezing based on squeezing
Casting drilling tool+casting drilling tool；2, more Power compound drill assembly are the extruding and removing soil drilling tool based on squeezing.
It is described in detail such as according to soft in pile body depth bounds, the native distribution situation of hard court and the more Power compound drilling tools of matching
Under:
1, extruding and removing soil drilling tool+casting drilling tool of more Power compound drill assembly based on squeezing, this more Power compound drilling tools
Combine and be suitble to stratum: pile body depth bounds Site Soil, based on Moderate stiff soil sites soil, pile body top is weak, in soft Site Soil account for very
Less or fraction；Pile body depth bounds Site Soil, pile body top be it is weak, in soft Site Soil, pile body lower part is Moderate stiff soil sites
Soil, soft, each accounting example of hard court soil matrix sheet is half-and-half.
Pile body depth bounds Site Soil: it is weak, in soft Site Soil, engineering method uses soil compaction；Moderate stiff soil sites soil, engineering method use with
Casting.
Center drilling tool be casting drilling tool, soil compaction ratio less than 0.6, and be certain value, spiral shell diameter compare suitable casting, screw pitch for etc.
Away from.Its length be greater than processing it is weak, in soft place soil thickness, occurrence finally determines according to design requirement and strata condition.
Intermediate sleeve drilling tool and outer sleeve drilling tool use the extruding and removing soil drilling tool based on soil compaction, and soil compaction ratio is to be not less than 0.6
And no more than 1.0 soil compaction sections be leading, and soil compaction ratio is from bottom to top, ascending gradually gradual to 1.0, extruding and removing soil segment length or
Soil compaction ratio variation degree, depending on to handle it is weak, in depending on soft place soil compactness and drilling machine power mechanism output torque size,
Drilling tool soil compaction is than being light bar segment for 1.0.For spiral shell diameter than suitable soil compaction, screw pitch can be equidistant, preferably from bottom to top, it is descending gradually
It is gradual.
Intermediate sleeve drilling tool length is weak no more than (or being slightly larger than) processing, in soft place soil thickness, occurrence is according to setting
Meter requires and strata condition finally determines；Outer sleeve drilling tool is less than intermediate sleeve drilling tool length, occurrence according to design requirement and
Strata condition finally determines.
Center drilling tool is casting drilling tool；
Intermediate sleeve drilling tool and outer sleeve drilling tool are the extruding and removing soil drilling tool based on soil compaction；
Soil compaction area are as follows: Soft site soil, in soft Site Soil；
Casting area are as follows: Moderate stiff soil sites soil.
When pore-forming, the extruding and removing soil drilling tool based on squeezing respectively screws drilling and forming hole in advance in soil compaction area different designs depth,
In stake holes soil during revolving row with extruding and removing soil drilling tool helical blade from large to small, core drilling rod overall diameter is by thin thicker process
In, by uniformly and it is again targetedly appropriate squeeze, squeezed consumption is in enhancing, stake holes wall side friction in stake holes wall.Extruding and removing soil
Drilling tool soil compaction area respectively in the form of soil compaction drilling to projected depth (intermediate sleeve drilling tool bottom end or slightly penetrate soil compaction area several),
Stopping drilling, (for extruding and removing soil drilling tool when soil compaction area pore-forming is crept into, casting drill bit stretches out extruding and removing soil drilling tool drilling tool bottom end, drilling
When for reversion, prevent soil drained into outside aperture by casting drilling tool rotary, only play for extruding and removing soil drilling tool positioning, break ground and creep into function.),
Then by casting drilling tool main story, continue to creep into casting area, revolve casting to orifice profile into stake holes, design is reached in casting area
Then depth stops to bore, on one side the pressure concrete injecting into core pipe, successively promotes each power drilling tool, each power drilling tool bottom successively on one side
Successively concordant rear Synchronous lifting is held, until mentioning aperture absolute altitude, while concrete also presses and fills pile to designed elevation.
This kind of process flow pressurizing device pressure point is set on middle power head.
Extruding and removing soil combination drill tool+casting drill assembly based on soil compaction after pile is perfused in pore-forming, it is weak in stake holes, in
Soft Site Soil is extruded, squeezed consumption is in soil compaction area stake holes wall；Moderate stiff soil sites soil is by casting drilling tool rotary tap in stake holes
Outside mouthful.
2, more Power compound drill assembly are the extruding and removing soil drilling tool based on squeezing, and this more Power compound drill sets are suitable
Close distribution of strata: pile body depth bounds Site Soil, with it is weak, in based on soft Site Soil, pile body lower part Moderate stiff soil sites soil accounts for seldom
Or fraction；
Pile body depth bounds Site Soil: it is weak, in soft Site Soil, engineering method uses soil compaction；Moderate stiff soil sites soil, engineering method is using row
Soil.The matching of more Power compound drilling tools be soil compaction section drilling tool be it is leading, casting section drilling tool cooperates, and casting is also the original of soil compaction service
Then.
Center drilling tool, intermediate sleeve drilling tool and outer sleeve drilling tool are soil compaction drilling tool, use the extruding and removing soil based on soil compaction
Drilling tool, soil compaction ratio is to be leading not less than 0.6 and no more than 1.0 soil compaction sections, and soil compaction ratio is from bottom to top, ascending gradually to delay
Fade to 1.0, extruding and removing soil segment length or soil compaction ratio variation degree, depending on to handle it is weak, in soft place soil compactness and drilling machine it is dynamic
Depending on force mechanisms output torque size, drilling tool soil compaction is than being light bar segment for 1.0.Spiral shell diameter is than suitable soil compaction, and screw pitch can be isometrical, preferably
It is descending gradually gradual for from bottom to top.
Center drilling tool length be greater than processing it is weak, in soft place soil thickness, occurrence is according to design requirement and strata condition
It is final to determine；The length of center drilling tool casting section be into Moderate stiff soil sites soil depth, soil compaction than preferably select from bottom to top, by it is small to
Big gradual change, length are determined by design requirement and strata condition.Intermediate sleeve drilling tool length be less than processing it is weak, in soft Site Soil
Thickness, occurrence are finally determined according to design requirement and strata condition；Outer sleeve drilling tool is less than intermediate sleeve drilling tool length, specifically
Value is finally determined according to design requirement and strata condition.
Center drilling tool, intermediate sleeve drilling tool and outer sleeve drilling tool are the extruding and removing soil drilling tool based on soil compaction；
Soil compaction area are as follows: Soft site soil, in soft Site Soil；
Casting area are as follows: Moderate stiff soil sites soil.
Brill mode under drilling tool drilling in center is first taken slowly when pore-forming, drilling tool screw drilling in soil compaction area in advance, and drill bit is not
Into before Moderate stiff soil sites soil, drilling tool rotary squeezes Yu Tuzhong, and drilling tool periphery soil is extruded, is squeezed, if in drilling tool light bar segment access aperture
After dry, aperture is sealed, aperture is unable to casting, adjusts revolving speed at this time, and drill bit breaks ground drilling, the rotation casting of center drilling tool casting section,
Center drilling tool soil compaction section carries out rotation casting to revolve and squeeze simultaneously.After drill bit enters casting area, center drilling tool casting section is stake holes
Middle Moderate stiff soil sites soil is revolved toward stake holes top to be arranged, with helical blade from large to small to nothing during revolving row, core drill pipe diameter by
It is thin it is thicker during, rotation casting by uniformly and it is again targetedly appropriate squeeze, squeezed consumption is in soil compaction area stake holes wall, make stake holes
The enhancing of wall side friction.When power center (PC) drilling tool when casting area reaches projected depth, other power drilling tools are simultaneously also in soil compaction area
All in the form of soil compaction then drilling stops to bore, on one side the pressure concrete injecting into core pipe to respective different designs depth, on one side successively successively
Promote each power drilling tool, Synchronous lifting after each power drilling tool bottom end is successively concordant, until mentioning aperture absolute altitude, while concrete is also pressed
Pile is filled to designed elevation.
Extruding and removing soil drill assembly based on squeezing after pile is perfused in pore-forming, it is weak in stake holes, in soft Site Soil be squeezed
Pressure, squeezed consumption are in soil compaction area hole wall；Stake holes middle and lower part Moderate stiff soil sites soil drains into top soil compaction by center drilling tool casting Duan Xuan
Area gradually squeezed by center drilling tool soil compaction section, squeezed consumption is in enhancing, stake holes wall side friction in stake holes wall.
For diameter-variable pile:
Such as: it is Moderate stiff soil sites soil (or the overwhelming majority is Moderate stiff soil sites soil) for stratum in the processing long range of stake, adopts
With casting engineering method, casting pore-forming is successively crept by center drilling tool 12-intermediate sleeve, 22-outer sleeve of drilling tool drilling tool 32 respectively.Into
One step, this kind of 25 pressure point of process flow pressurizing device is set on power head 11 most preferably.
Such as: for stratum in the processing long range of stake be it is weak, in soft Site Soil (or the overwhelming majority for it is weak, in it is soft
Site Soil), using soil compaction engineering method, by center drilling tool 12-intermediate sleeve, 22-outer sleeve of drilling tool drilling tool 32, successively drilling is squeezed respectively
Native pore-forming.Further, this kind of 25 pressure point of process flow pressurizing device is set on power head 11 most preferably.Stake top first
Casting mode (mainly seeing intermediate sleeve drilling tool 22 to the compacted degree of stake holes wall soil) also can be used in variable diameter pile body pore-forming engineering method.
Such as: handling stratum top in the long range of stake is soft Site Soil in weakness-, and lower part is Moderate stiff soil sites soil, using crowded
Engineering method is had both in casting, and by intermediate sleeve drilling tool 22, (drilling tool 12 drill bit in center stretches out 22 bottom end of intermediate sleeve drilling tool at this time, when drilling
For reversion, prevent spin-ended casting, only play for intermediate sleeve drilling tool 22 positioning, break ground and creep into function)-outer sleeve drilling tool 32 according to
The secondary soft Site Soil drilling soil compaction pore-forming (22 bottom end of intermediate sleeve drilling tool or slightly penetrating soil compaction area) in weakness-respectively, stops boring,
Then center drilling tool 12 rotates forward, and continues to creep into casting, reaches projected depth in Moderate stiff soil sites soil.Further, stake top first
Casting mode (mainly seeing intermediate sleeve drilling tool 22 to the compacted degree of stake holes wall soil) also can be used in variable diameter pile body pore-forming engineering method.This kind
25 pressure point of process flow pressurizing device is set on middle power head 21.
For screw thread diameter-variable pile:
Such as: in the processing long range of stake stratum be it is weak, in soft Site Soil (or the overwhelming majority it is weak, in soft place
Soil), using screw thread soil compaction engineering method, successively it is respectively adopted together by center drilling tool 12-intermediate sleeve, 22-outer sleeve of drilling tool drilling tool 32
Step technology creeps into soil compaction into screw thread stake holes.Further, this kind of 25 pressure point of process flow pressurizing device is set to power head
On 11.Stake top the first variable diameter pile body pore-forming engineering method also can be used casting mode, formed equal diameter stake holes (stake top stress is concentrated,
Increase stake top cross section forced area).
Such as: stratum top is soft Site Soil in weakness-in the processing long range of stake, and lower part is that Moderate stiff soil sites are native, in use
Portion's screw thread soil compaction lower part casting, crowded row have both engineering method, and by intermediate sleeve drilling tool 22, (drilling tool 12 drill bit in center stretches out intermediate sleeve at this time
Cylinder drilling tool 22 bottom end is reversion when drilling, prevents spin-ended casting, only play as the positioning of intermediate sleeve drilling tool 22, break ground and creep into function
Can)-outer sleeve drilling tool 32 be successively respectively adopted simultaneous techniques drilling soil compaction at screw thread stake holes, 22 bottom end of intermediate sleeve drilling tool is not
Stop boring after soft Site Soil in penetrating or slightly penetrating, continues to rotate forward by center drilling tool 12 at this time, creeps into rotation casting at stake holes, in firmly
Reach projected depth in Site Soil.Further, casting mode also can be used in the first variable diameter of stake top pile body pore-forming engineering method, formed etc.
Diameter stake holes (stake top stress is concentrated, and stake top cross section forced area is increased).This kind of 25 pressure point of process flow pressurizing device is set
It is placed on power head 21.
Embodiment three
In conjunction with shown in Figure 27 to Figure 36, the present embodiment also provides a kind of type stake according to more Power compound drilling tool preparations
4 comprising: main body pile body 41；At least two back taper stepped ramp type bodies 42 are provided on the main body pile body 41；The back taper step
The included angle range of place inclined-plane extended line and 41 central axis of main body pile body at the variable diameter of type body 42 are as follows: 5 °~
90°.Such as: at the variable diameter of the back taper stepped ramp type body 42 at pile body superficial part, the variable diameter of the back taper stepped ramp type body 42
The included angle value range of place inclined-plane extended line and 41 central axis of main body pile body is preferably 30 °~45 °.Another example is: institute
It states and is located at pile body deep at the variable diameter of back taper stepped ramp type body 42, the place inclined-plane at the variable diameter of the back taper stepped ramp type body 42 prolongs
The included angle range of long line and 41 central axis of main body pile body is 5 °~90 °, (such as: 30 °, 45 °, 60 °, 75 °).
In addition, for main body pile body 41, it can also be there are many form.
For example, non-threaded type diameter-variable pile: there are two back taper stepped ramp type body 42, the back tapers for setting on the main body pile body 41
5 °~90 ° of angle of place inclined-plane extended line and 41 central axis of main body pile body at the variable diameter of stepped ramp type body 42.
In another example screw-type diameter-variable pile: there are two back taper stepped ramp type bodies 42 for setting on the main body pile body 41, from top to bottom
It is divided into the first pile body, the second pile body and third pile body, wherein at least one has among the first pile body, the second pile body and third pile body
There is helicitic texture.Place inclined-plane extended line and 41 central axis of main body pile body at the variable diameter of the back taper stepped ramp type body 42
5 °~90 ° of angle.
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 (8)
1. a kind of more Power compound drilling tools characterized by comprising lower power drilling tool, the middle power drilling tool being sequentially coaxially nested
With upper power drilling tool；
The lower power drilling tool, middle power drilling tool and upper power drilling tool are respectively equipped with a power mechanism, the power mechanism energy
Its correspondence drilling tool is enough operated alone to be rotated；At least one among the lower power drilling tool, middle power drilling tool and upper power drilling tool
Person by one there is crowded, casting complex function tool body to constitute, described to have in crowded, casting complex function tool body
The outer diameter of core pipe gradually increases from bottom to top, and is changed according to scheduled soil compaction ratio；The soil compaction ratio is defined as core
Pipe overall diameter and tool body diameter ratio；The width of the helical blade of the tool body is gradually reduced from bottom to top, so that
The outer profile of all helical blades is distributed in equal diameter.
2. more Power compound drilling tools according to claim 1, which is characterized in that the lower power drilling tool includes: lower power
Head and outer sleeve drilling tool；The lower power head is set to the upper end of the outer sleeve drilling tool, for driving the outer sleeve drilling tool
Carry out spinning movement；The outer sleeve drilling tool uses the extruding and removing soil combination drill tool main body based on soil compaction.
3. more Power compound drilling tools according to claim 2, which is characterized in that the lower power drilling tool further include: lower row
Soil box；The lower casting slot is set to the upper end of the lower power head.
4. more Power compound drilling tools according to claim 1, which is characterized in that the middle power drilling tool includes: middle power
Head, intermediate sleeve drilling tool and middle lifting device；The middle power head is set to the upper end of the intermediate sleeve drilling tool, for driving
The intermediate sleeve drilling tool carries out spinning movement；The middle lifting device is set to the lower end of the middle power head, for driving
The lower power drilling tool carries out lifting action；The intermediate sleeve drilling tool uses the extruding and removing soil combination drill tool master based on soil compaction
Body.
5. more Power compound drilling tools according to claim 4, which is characterized in that the middle power drilling tool further include: middle row
Soil box and middle limiting device, the middle casting slot are set to the upper end of the middle power head；The middle limiting device is set to institute
State the lower end of middle power head.
6. more Power compound drilling tools according to claim 1, which is characterized in that the upper power drilling tool includes: upper power
Head, center drilling tool and upper lifting device；The upper power head is set to the upper end of the center drilling tool, for driving the center
Drilling tool carries out spinning movement；The upper lifting device is set to the lower end of the upper power head, for driving the middle power drill
Tool carries out lifting action；The center drilling tool uses the casting drilling tool with casting function, the soil compaction ratio of the casting drilling tool
Numberical range is less than 0.6 and is certain value；/ center the drilling tool uses based on soil compaction, and supplemented by casting, casting is also soil compaction clothes
The extruding and removing soil combination drill tool main body of business.
7. more Power compound drilling tools according to claim 6, which is characterized in that the upper power drilling tool further include: the upper limit
Position device；The position limit device is set to the lower end of the upper power head.
8. more Power compound drilling tools described in any one of -7 according to claim 1, which is characterized in that further include: pressurizing device,
The pressurizing device is set to any one among the upper power drilling tool and the middle power drilling tool.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098655A (en) * | 2018-10-11 | 2018-12-28 | 李广信 | More Power compound drilling tools, preparation method and type stake |
| CN109098655B (en) * | 2018-10-11 | 2024-02-06 | 李广信 | Multi-power composite drilling tool, preparation method and pile |
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