CN108999184A - A kind of staged cement earth pile machine and construction method - Google Patents
A kind of staged cement earth pile machine and construction method Download PDFInfo
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- CN108999184A CN108999184A CN201810440502.4A CN201810440502A CN108999184A CN 108999184 A CN108999184 A CN 108999184A CN 201810440502 A CN201810440502 A CN 201810440502A CN 108999184 A CN108999184 A CN 108999184A
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- drilling rod
- blade
- stirring
- vertical shaft
- shaft
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- 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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a kind of staged multi-shaft stirring stake machines, it includes chassis, three supporting-point pile frames and power head, three supporting-point pile frames realize horizontal shifting by chassis, the power head is socketed in being vertically directed on column and sliding up and down connection for three supporting-point pile frames, power head is connect by multiple vertical shafts with more drilling rods one by one, it is characterized in that, the vertical shaft and drilling rod are at least respectively provided with a row, every drilling rod in every row is different in size, it is from short to long in cascade arrangement, before being with direction of advance, it is short preceding, it is long rear, it the blade depth equal length of every drilling rod and is added and is equal to stirring depth；It is equipped with cross-cutting blade in the blade of drilling rod, in drilling rod transverse shifting, transverse cuts are carried out to the soil body.The uniformity and continuity of churned pile wall is significantly greatly increased when carrying out cement soil wall construction in the present invention, is suitable for the stratum such as cohesive soil, sand, is particularly suitable for soft soil layer, easy for construction, easily controllable verticality, small, low cost of being self-possessed.
Description
Technical field
The invention belongs to earthwork engineering field mechanical equipments, are related to a kind of mixing pile machine, in particular to a kind of different long
Spend the multi-shaft stirring stake machine that drilling rod is in stagger.
Background technique
The stirring operation that multi-shaft stirring stake machine carries out cement soil wall, such as two axis, three axis, five axis are commonly used in civil engineering at present
Or six mixing pile machines such as axis, a kind of such as CN201210497137.3 in the prior art " multi-shaft stirring stake for reducing soil compaction
Device and its application ", power head passes sequentially through gearbox and speed reducer drives more drilling rod rotations, and drilling rod is more equipped with 1~9
The direction of rotation of root drilling rod is that reciprocal cross is wrong, and the upper end of drilling rod is equipped with stock inlet, and the lower end of drilling rod connects drilling rod winged, brill winged
The lower end changeable type of bar connects Multifunctional drill, and Multifunctional drill is equipped with mouth spray and puff prot.Compared with prior art,
The present invention has many advantages, such as that reduction soil compaction effect, drilling via formations are good, cement utilization rate is high, the influence to ambient enviroment is small.
A kind of for another example CN201320753981.8 " equipment for being accurately positioned multiaxis deep-mixed pile ", including equipment base
Seat, girder steel frame, drilling machine lifting column, walking track, the multi-shaft interlocked motor of drilling rod, drilling rod, transmission stroke motor group, passes roller bearing
Moving axis, transmission gear；Equipment base is equipped with girder steel frame, is roller bearing between equipment base and girder steel frame, and girder steel frame is set on one end
There is drilling machine lifting column, drilling machine lifting column is equipped with the multi-shaft interlocked motor of drilling rod, and the multi-shaft interlocked motor of drilling rod is equipped with several
Drilling rod (drilling rod quantity generally selects three), the girder steel frame other end are equipped with walking track, and equipment base is equipped with transmission stroke motor
Group, transmission stroke motor group are connected with transmission gear, transmission gear driving walking track by transmission shaft.
For another example CN201420482704.2 " multiple rows of multi-shaft cement mixing pile drilling machine ", downslide can be gone up by being provided in rack
Dynamic headstock, headstock connect multiple rows of drilling rod, every row n root drilling rod；Every drilling rod lower part is provided with stirring blade or blade；Institute
Stating drilling rod is hollow drill pipe, is internally provided with channel, drilling rod bottom is provided with aperture；The rotation simultaneously of multiple rows of drilling rod forms multiple rows of every
Arrange the cement mixing method of n root.Can once be constructed multiple rows of cement mixing method, reduce the cold seam of overlap joint, be greatly decreased manually at
This, shortens the construction period, and improves construction quality, reduces construction cost.
For another example CN201420451756.3 " compartment multi-shaft cement mixing pile machine ", including rack are provided in rack
Headstock, headstock connect n root drilling rod, n >=2, and n root drilling rod is parallel to each other on vertical direction on same vertical plane, every brill
Stirring blade or blade are provided on bar, stirring blade or blade radical length are d, and the spacing of adjacent drill pipes is D, d < D/2；n
The rotation of root drilling rod is formed simultaneously mutually overlapped n root cement mixing method.This function is once constructed more compartment cement
Native mixing pile, the spacing of stake, verticality equally accurate greatly improve, than greatly improving working efficiency using uniaxial construction interval stake,
Especially in occlusion pile driving construction, cost of labor is greatly decreased, shortens the construction period, reduce labor intensity and reduces construction cost.
Mixing pile technology is continuously developed in the prior art, but does not mention stirring drilling rod staged distribution, and reality makes
The common feature of mixing pile machine is that stirring run of steel is of substantially equal, and can only construct a single width mixing pile every time, each width
Mixing pile forms a continuous Soil-cement Wall by socket.It is very high to the verticality requirement of stirring drilling rod in construction,
Otherwise jag seam is easy to appear between each width mixing pile, if it is water-stop curtain construction is carried out, the appearance of jag seam be will cause only
Water failure, directly affects engineering construction and safety.In addition, the bracket height of existing multi-shaft stirring stake machine is very big, usually 30m with
On, cause its center of gravity it is high, from great, verticality is difficult to control in construction, it is desirable that construction ground will have enough intensity, often want
It asks and is laid with thicker rubble and concrete.When stirring depth is larger, more drilling rods are simultaneously in stirring deep soil, frictional resistance
Greatly, relatively high power dynamical system is needed to configure.
Summary of the invention
In view of the deficiencies of the prior art, the technical issues of present invention intends to solve is: providing a kind of stirring drilling rod in staged
The multi-shaft stirring stake machine of arrangement, stirring drilling rod by different in size in stagger, be responsible for stirring different depth by every drilling rod
The soil layer of same thickness, such as the stirring of three axis, then every drilling rod stirring soil thickness is equal to the one third of design stirring depth.
Meanwhile drilling rod shaft is provided with vertical stirring and cross cutting blade, so that drilling rod is had back transverse shifting and cuts stirring soil
The function of body, can to just completed stirring pile body between the soil body carry out secondary agitation, increase cement soil wall uniformity and
Continuity.In addition, the distance that drilling rod moves up and down is equal to total stirring depth divided by stirring drilling rod number, lifting space is greatly decreased,
Entire bracket height and self weight is greatly decreased, center of gravity reduces, it is easier to control rack verticality, reduce manufacturing cost.
The scheme that the present invention solves above-mentioned technical problem is: a kind of staged multi-shaft stirring stake machine, it includes chassis, three
Point pile frame and power head, three supporting-point pile frames realize that horizontal shifting, the power head are socketed in three supporting-point pile frames by chassis
Be vertically directed on column and slide up and down connection, power head is connect by multiple vertical shafts with more drilling rods one by one, the vertical shaft with
Drilling rod is at least respectively provided with a row, and every drilling rod in every row is different in size, is in from short to long cascade arrangement, is with direction of advance
Before, it is short preceding, it is long rear, it the blade depth equal length of every drilling rod and is added and is equal to stirring depth；The blade of drilling rod
In be equipped with cross-cutting blade, in drilling rod transverse shifting, to the soil body carry out transverse cuts.
Further, the length of every drilling rod is in arithmetic progression aligned transfer, and most stub boring pole length is equal to tolerance, length scale
Equal to design stirring depth divided by drilling rod number, longest drilling rod is equal to design stirring depth, the blade depth length phase of every drilling rod
Deng.
Further, the power head is made of power drive head, vertical shaft spacing head and vertical shaft, power drive head and vertical shaft limit
Potential head is relatively fixed together and separated by a distance, and vertical shaft upper end is connect with power drive head, and lower end passes through vertical shaft spacing head
On the vertical shaft hole with bearing, and expose lower end thread and connect with drilling rod, the verticality and pile frame guide post of vertical shaft and drilling rod
It is identical.
Further, there are motor and gearbox in power drive head, motor drives vertical shaft rotating by gearbox.
Further, the drilling rod is made of the round bur bar of upper section and the blade drilling rod of lower section, and round bur bar is extension arm, i.e.,
Every drilling rod has the round bur bar of a section or more, and blade drilling rod shaft has blade.
Further, the bottom end of the blade drilling rod is incision mixing blade, and there is grout outlet in incision mixing blade upper end surface；
Blade drilling rod shaft is equipped with mixing blade and cross-cutting blade.
Further, the mixing blade is similar to incision mixing blade structure and along shaft arranged for interval, past from grout outlet
Upper distribution, cross-cutting blade are fixed on the outside of mixing blade, and there is a cutting edge in front end, the width of entire blade be slightly less than adjacent drilling rod it
Between clear spacing, do not occur mutually to collide between adjacent drilling rod.
Further, power head is connect one by one by vertical shaft with drilling rod, from front to back, respectively the first vertical shaft, the second vertical shaft,
Last vertical shaft, the first vertical shaft are connect with most short drill pipe, and the second vertical shaft is connect with the second short drilling rod, last vertical shaft and longest
Drilling rod connection.
Further, most stub boring pole length is equal to design stirring depth divided by drilling rod number, the i.e. tolerance of arithmetic progression, entirely most
Short drill pipe is blade drilling rod；Second run of steel is equal to the length of twice of most short drill pipe, and half length above is round bur
Bar, below half length be blade drilling rod；And so on, longest run of steel is equal to design stirring depth, is equivalent to below
The length of tolerance is blade drilling rod, remaining is round bur bar, i.e., the blade run of steel of all drilling rods is equal and is equal to tolerance；Blade
Drilling rod shaft is equipped with mixing blade and cross-cutting blade and does not occur mutually to touch between each blade and drilling rod in drilling rod rotary course
It hits.
A kind of staged multi-shaft stirring stake cement soil wall construction method, steps are as follows:
The first step determines the thickness and vertical shaft and drilling rod number of rows of drilling rod, further according to stirring depth and vertical shaft first according to stirring thickness
Determine run of steel and quantity；Before being with direction of advance, the length of drilling rod is in arithmetic progression aligned transfer, in the most short of forefront
Run of steel is equal to tolerance and entire most short drill pipe is blade drilling rod, and length scale is equal to design stirring depth divided by drilling rod
Number is equal to design stirring depth, the blade depth equal length of every drilling rod in the longest drilling rod of rearmost, and drilling rod is designed as
Merogenesis connection structure；
Second step, mixing pile machine are in place；Guide post and vertical shaft verticality are adjusted, vertical state is at；Carry out merogenesis installation
Drilling rod is as follows: first promoting power head, blade drilling rod is installed on the vertical shaft of rearmost, and stir and sink to soil layer, only expose and connect
Junction portion, then vertical shaft is unloaded to take off with blade drilling rod and is separated, power head is above mentioned, continues that round bur is installed on the vertical shaft of rearmost
Bar, while in previous position blade drilling rod being installed below on penultimate vertical shaft, two drilling rods are stirred simultaneously and sink to soil
Layer after blade drilling rod buries completely, then two vertical shafts is unloaded to take off with drilling rod and are separated, and promotes power head again, then bore at two
Continue that round bur bar is installed on bar, while being that blade drilling rod is installed on vertical shaft third from the bottom below at the first two, and so on, directly
To blade drilling rod is mounted on the vertical shaft of forefront, i.e., most short drill pipe installs；
Third step, for the first time whitewashing stirring；Integral sinking drilling rod simultaneously stirs and whitewashes, and submergence depth is equal to the length of most short drill pipe
Degree；The whole drilling rod that promoted simultaneously stirs and whitewashing, has just basseted to most short drill pipe bottom end, then integral sinking drilling rod and stirs, often
Secondary drilling rod sinks and what is promoted is equidistant；
4th step, the Forward of stake machine；It promotes drilling rod to be moved along after most short drill pipe bottom is just basseted, moving distance is equal to phase
Adjacent drilling rod center is away from repeating third step after reaching new stake position；
5th step, stake machine move back；When the stirring whitewashing for completing one stake of Forward, longest drilling rod is stirred to projected depth, by drilling rod
It is whole to be translated among previous stake position or two stake positions in rotation, it is whole to promote drilling rod and stir, until most stub boring
Whether bar bottom is just basseted, stir number up and down and whitewash, determine according to need；
6th step enters back into next machine Forward, stake machine and moves back, the stirring operation until completing entire cement soil wall, but from
This step starts, stake machine Forward distance be adjacent drill pipes center away from twice or 1.5 times, reach new stake position.
The beneficial effects of the present invention are: 1, using drilling rod different in size press stagger, three fulcrums can be greatly reduced
The height of pile frame reduces self weight, lowers the center of gravity, and is conducive to control verticality in construction and reduces the pressure to ground, prevents from boring
Bar deviates.
2, cross blade is set in drilling rod shaft, increases the uniformity of pile body stirring.And it is arranged in drilling rod shaft vertical horizontal
Blade is cut, makes drilling rod that there is transverse shifting to cut agitating function, can back rigid stirring pile body lap-joint be carried out transverse shifting
Stirring can also be moved back and carry out encryption whitewashing stirring, the continuity and uniformity of Soil-cement Wall has been significantly greatly increased, has reduced
Entire cement soil wall " jag " phenomenon.
3, the new model that a kind of run of steel is in stagger is especially opened, under there is mixing pile machine simultaneously vertically
The function of stirring and transverse translation stirring (mainly stirring to the encryption of rigid stirring pile body lap-joint) is cut, and has structure simple,
Easy to operate, easy to repair advantage.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention.
Fig. 2 is the drilling rod stagger schematic diagram of the embodiment of the present invention.
Fig. 3 is the blade jackrod structure schematic diagram of the embodiment of the present invention.
Fig. 4 is the diagrammatic cross-section of the embodiment of the present invention.
Specific embodiment
Detailed descriptionthe is carried out to the present invention below with reference to embodiment and attached drawing.
Embodiment 1, the staged multi-shaft stirring stake machine (hereinafter referred to as staged stake machine, referring to Fig. 1-4) of the design, packet
Include chassis 1, three supporting-point pile frames 2, power head 3,4 four part of drilling rod (referring to Fig. 1).Below by taking staged three axes agitating pile machine as an example
It is illustrated.
The chassis 1 of the present embodiment and three supporting-point pile frames 2 are same as the prior art.Chassis 1 be crawler type or walking, three
Point pile frame 2 is fixed on chassis 1 and horizontal shifting, three supporting-point pile frames 2 can lead by two braces 201 and vertically on chassis
It is formed to column 202, guide post 202 is in a vertical shape, is made of two arranged in parallel and relatively fixed smooth columns together, is oriented to
The cross section of column 202 can be circle or other shapes, and the verticality of guide post 202 is adjustable, i.e., adjustable by adjusting brace
Save the verticality of guide post.
Power head 3 is made of power drive head 301, vertical shaft spacing head 302 and three vertical shafts 303,301 He of power drive head
Vertical shaft spacing head 302 is socketed in guide post 202, can be slided up and down along guide post 202, and power drive head 301 is located at vertical shaft
The top of spacing head 302, the two it is separated by a distance and it is relatively fixed together (referring to fig. 2), i.e., simultaneously along about 202 guide post
Sliding.Vertical shaft spacing head 302 has the vertical shaft hole of vertical belt bearing, and hole count is identical as vertical shaft radical, and vertical shaft 303 is hollow, vertical shaft
303 upper surfaces are connect with power drive head 301, and lower end passes through the vertical shaft hole of vertical shaft spacing head 302, and exposes lower end surface screw thread silk
Button, screw thread with drilling rod for connecting.Vertical shaft 303 under the constraint of power drive head 301 and vertical shaft spacing head 302 always with
Guide post 202 is parallel, and the two keeps same vertical degree, has motor and gearbox in power drive head 301, rotates for vertical shaft 303
Power is provided, power drive head 301 drives vertical shaft 303 to rotate, then the drilling rod being connected with vertical shaft 303 4 is driven to rotate together, to soil
Layer is stirred.
4 top of drilling rod is connect with power head 3, and power head 3 drives drilling rod 4 to rotate, and grouting device gives drilling rod 4 note by vertical shaft
Slurry, slurries enter stirring soil layer by drilling rod 4, mix with soil layer.
When power drive head 301 drops to extreme lower position along guide post 202,303 lower end of vertical shaft is flushed with ground, power
First 3 minimum ranges moved up and down are not less than design stirring depth divided by drilling rod number, i.e. blade run of steel.
Motor and speed change gear driving vertical shaft 303 in power drive head 301 are rotated by given pace, and vertical shaft 303 drives
Drilling rod 4 rotates, and carries out incision stirring to the soil body.Due to power drive head it is relatively fixed with vertical shaft spacing head together with, and be separated by
Certain distance not only can ensure that vertical shaft and guide post keeping parallelism, also power head can be made to be able to bear certain lateral thrust, entirely
Power drive head 301 can be slided up and down along guide post, and vertical shaft verticality is identical as guide post, adjustable vertical by adjusting guide post
The verticality of axis, so as to adjust the verticality of each drilling rod.
The drilling rod 4 is by light round bur bar 402(hereinafter referred to as round bur bar) and band blade drilling rod 401(hereinafter referred to as blade brill
Bar) composition, each drilling rod top is connected through a screw thread with vertical shaft, as vertical shaft rotates together and slides up and down.
To be easily installed and dismantling, every drilling rod is divided into several sections, and every section drilling rod is connected by screw thread.Every drilling rod
On blade run of steel it is equal, size be equal to or slightly less than run of steel tolerance, the tolerance be equal to design stirring depth divided by
Drilling rod number has cross-cutting blade part, it can be provided be made of several sections, often for the blade drilling rod convenient for assembling different length
Section is connected by screw thread.
Such as three axes agitating pile machine, three 4 upper surfaces of drilling rod are connect with three 303 lower end surfaces of vertical shaft respectively, and with vertical shaft 303
It rotates together, drilling rod is different in size, and length is arranged at arithmetic progression, and before being with direction of advance, drilling rod is pressed by short from front to back
It is arranged to long sequence.Most stub boring pole length is equal to tolerance, and size is equal to design stirring depth divided by drilling rod number, and longest drilling rod is long
Degree is equal to design stirring depth, and the blade drilling rod 401 on every drilling rod 4 is respectively positioned on drilling rod lower end, is equal in length, size etc.
In most stub boring pole length or tolerance.
So the most stub boring pole length of three axis stirring rod stake machine of staged is equal to the one third of design stirring depth, row
Column are installed on first vertical shaft up front (referring to fig. 2), and entire drilling rod is blade drilling rod 401.Second drilling rod and centre
Vertical shaft connection, length be equal to design stirring depth 2/3rds, half length above be round bur bar 402, below half it is long
Degree is blade drilling rod 401.Third root drilling rod longest, connect with rearmost vertical shaft, and length is equal to design stirring depth, above
2/3rds length be round bur bar 402, below one third length be blade drilling rod 401.
Round bur bar 402 is same as the prior art, is hollow cylindrical drilling rod, does not have agitating function, effect is extension arm.
As shown in Figure 3-4,401 lower end end of blade drilling rod is that two pairs of four incision mixing blade 403 are arranged symmetrically, and blade is to rotation side
To be tilted a certain angle and it is radially fixed there is cutting edge in front end on drilling rod axis, so that drilling rod is smoothly drilled down into and cut soil
Body.401 shaft different height of blade drilling rod is provided with mixing blade 404 and cross-cutting blade 405, and rigidity is larger, is unlikely to deform.
Mixing blade 404 is same as incision mixing blade 403, along axial (i.e. length direction) the merogenesis arranged for interval of drilling rod, sustained height position
The blade set forms a section, and every section blade is separated by a distance, and each section blade is by one section of screw blade or several blade-shaped knives
Piece composition.It is at regular intervals between every layer of mixing blade 404, it can prevent the soil body from continuously up pushing.Cross-cutting blade 405 is fixed on
On the outside of mixing blade, in being vertically arranged, parallel with drilling rod axis, there is cutting edge in the advance side of rotation, back laterally moves for drilling rod
The soil body is cut when dynamic rotation.
Larger to spiral blade screw pitch, there is cutting edge in front end, is radially fixed on drilling rod to vane type blade, with level
There is certain inclination angle in face, is inclined to rotation direction, and there is cutting edge in front end, and the spacing between every section blade is larger, prevents spacing is too short will be native
Body is continuously up pushed.
Incision mixing blade width is slightly less than the clear spacing between adjacent drill pipes, in order to avoid collide with adjacent drill pipes.Tightly
There is mouth spray by incision mixing blade upper surface.
When drilling rod rotates, mixing blade carries out stirring up and down to the soil body, increases pile body mixing uniformity.When drilling rod is with pile frame
When transverse shifting, being fixed on the cross-cutting blade on the outside of mixing blade has the function of cutting the soil body, i.e., drilling rod is .ed while rotating
The cross cutting soil body makes entire mixing pile machine have cross cutting agitating function, can carry out to the soil body between rigid stirring pile body
Secondary agitation increases and overlaps thickness between pile body, can also form the cob wall that mixes cement of uniform thickness.
Blade is arranged since the drill bit mouth spray upper end of drilling rod bottom end, up until upper level is compared with stub boring rod bit lower end surface
Until, guarantee shaft blade and upper level compared with not occurring mutually to collide between stub boring rod bit.Radial direction (the i.e. drilling rod diameter of blade
To) width is slightly less than the clear spacing between adjacent drill pipes, in drilling rod rotary course, do not occur mutually to touch between blade and drilling rod
It hits.
The structure that the present embodiment does not address place is suitable for the prior art.
It is different using the key step and existing multi-shaft stirring stake machine of stake machine of the present invention progress cement soil wall construction, with
The three of three axes agitating pile machine of the invention are illustrated for stirring two spray construction methods, and so-called three stir under two spray construction methods are exactly
Heavy stirring whitewashing (one stirs a spray) above proposes stirring whitewashing (one stirs a spray), stirring of sinking (one stirs).
The first step, mixing pile machine is in place, adjusts 202 verticality of guide post, is at vertical state, at this time vertical shaft 303
It is also at vertical state；
Second step, merogenesis install drilling rod.Drilling rod 4 is merogenesis connection, first promotes power head 3 and arrives higher position, 303 lower end of vertical shaft
Face is equal to the length of blade drilling rod 401 to ground level.Before being with stake machine stirring direction of advance, point preceding first vertical shaft, in
Between the second vertical shaft, last third vertical shaft, the first vertical shaft connect with most short drill pipe, and third vertical shaft is connect with longest drilling rod.First
Blade drilling rod 401 is installed on third vertical shaft, and stirs and sinks to soil layer, only exposes connector part, by third vertical shaft and knife
Piece drilling rod 401 unloads de-, above mentions power head 3, switches in third vertical shaft and down and installs circle between the blade drilling rod 401 in the soil body
Drilling rod 402, at this point, drilling rod has been lengthened and has been connected on vertical shaft, while installing blade drilling rod 401 on the second vertical shaft, by two
Drilling rod stirs sink to soil layer simultaneously.After blade drilling rod 401 buries completely, drilling rod is unloaded from two vertical shafts it is de-, again
Power head 3 is promoted, continues that round bur bar 404 is installed on the first and second vertical shaft, while blade drilling rod 401 being installed on the first vertical shaft,
Three drilling rods install.
Third step, for the first time whitewashing stirring.Integral sinking drilling rod simultaneously stirs whitewashing, and submergence depth is equal to blade drilling rod 401
Length, i.e. the length of most short drill pipe, that is, each drilling rod be responsible for the soil thickness of stirring, which is equal to design stirring
Depth stirs depth divided by drilling rod number, the i.e. design of one third.It promotes drilling rod and stirs whitewashing, just revealed to most short drill pipe bottom end
Ground out, and sinking drilling rod and stir, each drilling rod sinks and what is promoted is equidistant.
4th step, the whitewashing stirring of new pile position.Drilling rod is promoted to be moved along after most short drill pipe bottom is just basseted, it is mobile
Distance is equal to adjacent drill pipes center away from drilling rod can be easy to remove smooth to move in rotation, after reaching new stake position.It repeats
Third step carries out stirring whitewashing, above proposes stirring whitewashing and stirring operation of sinking.
5th step moves back stirring.When the stirring whitewashing for completing second stake, longest drilling rod is stirred to projected depth.It will bore
Bar is translated in while stirring, and translation distance is equal to two adjacent drill pipes centers away from (or center away from half), i.e., previous stake
Position (or two pile bodies overlapped center) promotes drilling rod and simultaneously stirs, until most short drill pipe bottom has just been basseted.It is referred to herein
Translation drilling rod, be to be realized by translating entire three supporting-point pile frame 2.
6th step, Forward and the stirring of new pile position.Move forward drilling rod, moving distance be equal to adjacent drill pipes center away from 2
Again (or 1.5 times), new pile position position is reached.Third step is repeated, three is carried out in new pile position and stirs two spray operations.
7th step constantly repeats the 5th step and the 6th step, constantly completes new stake position stirring whitewashing, entire Soil-cement
Wall will constantly extend forward, the stirring operation until completing entire cement soil wall.
The whole design of the present embodiment staged stake machine is characterized in that multiaxis drilling rod is different in size, is on vertical shaft from short to long
Cascade arrangement, meanwhile, mixing blade and cross-cutting blade are provided in shaft a certain range.Realize the soil layer of different depth by
Different drilling rods are responsible for stirring, greatly reduce the height and self weight of rack, are conducive to the verticality for keeping rack, more main
It is that when drilling rod back moves horizontally, blade drilling rod 401 can be stirred to the soil body and cross cutting, so as to just
The soil body or overlap joint weak link are again stirred between the pile body of stirring, can effectively increase the overlap joint overlapping journey between pile body
Degree and the appearance for reducing jag seam between pile body, are greatly improved the continuity and uniformity of cement soil wall.If back mobile pair
The soil body between two pile bodies carries out repeating stirring, can form the continuous Soil-cement Wall of uniform thickness.
The present embodiment technical solution compared with prior art the advantages of have two o'clock: first is that the drilling rod of the prior art almost etc.
Long, more drilling rods cut native stirring in the same plane, and the distance sunk every time and above mentioned is equal to design stirring depth, thus
It is required that the height of three supporting-point pile frames 2 or guide post 202 is very big, depth, especially ultra-deep are stirred at least equal to design and is stirred, it is high
It spends up to 40m.In design scheme of the invention, each drilling rod is different in size, arranges by arithmetic progression in staged on vertical shaft 303
Column, every drilling rod are only responsible for the soil layer within the scope of cutting and stirring certain depth, and the soil thickness of every drilling rod stirring is identical
, size is equal to tolerance, i.e. for design stirring depth divided by drilling rod number, the height sunk every time and above mention drilling rod is equal to tolerance, leads
It can be greatly decreased to the height of column 202.By taking three axes agitating pile machine as an example, the soil thickness of every drilling rod stirring is that design stirring is deep
The one third of degree, the maximum height that drilling rod sinks and promoted are also equal to one third (the i.e. design stirring that design stirs depth
Depth is divided by drilling rod number).So bracket height and self weight can be greatly decreased, be conducive to rack degree control, reduce over the ground
The pressure of base can also reduce manufacturing cost.
Second is that the drilling rod of the prior art is only provided with vertical incision mixing blade in a bit of range in bottom, and the present invention removes
It is provided with incision mixing blade 403 in 4 bottom of drilling rod, mixing blade 404 and cross are provided in the considerably long range of shaft
Cutting edge 405 can not only increase the uniformity of stirring, can also be achieved drilling rod mobile stirring backward, the i.e. (spray when back moving
Slurry) stirring, encryption stirring is carried out to the lap-joint between the stirring pile body just completed, or carry out again to the soil bodys all between pile body
Primary stirring, forms the cement soil wall of uniform thickness, the continuity of cement soil wall has been significantly greatly increased, jag seam goes out between reduction pile body
It is existing.
Embodiment 2, vertical shaft and drilling rod are respectively provided with two rows arranged side by side, do not occur mutually to collide between adjacent drilling rod with arranging；
It arranges and arranges and also do not occur mutually to collide between adjacent drilling rod；Other design and implementation examples 1 are similar.
Embodiment 3, the bottom end of blade drilling rod are incision mixing blade, further include longitudinal mixing blade and cross-cutting blade, knife
Piece drilling rod shaft is equipped with mixing blade, and cross-cutting blade is fixed on the outside of mixing blade in vertical distribution, and cross-cutting blade is arc plate
Shape, parallel with drilling rod axis, cross-cutting blade carries out transverse cuts to the soil body.
Mixing blade is spaced apart along shaft, is up distributed from incision mixing blade, to be more than two leaves on cross section.
Cross-cutting blade is equipped with cutting edge along rotation direction of advance side, and cutting edge has certain inclination angle, is inclined to rotation direction.
The cross-cutting blade of each leaf is axially integral or segmented setting, the cross-cutting blade being axially integral and interval
The mixing blade of distribution is connected, and axial is that the cross-cutting blade of segmented setting connects one by one with the mixing blade being spaced apart
It connects, interruption is equipped between the cross-cutting blade of adjacent leaf.
There is grout outlet in incision mixing blade upper end surface.
It should be noted that described above is presently preferred embodiments of the present invention, the invention is not limited to above-mentioned
Embodiment all should belong to protection scope of the present invention as long as it reaches technical effect of the invention with identical means.
Claims (10)
1. a kind of staged multi-shaft stirring stake machine, it includes chassis, three supporting-point pile frames and power head, and three supporting-point pile frames pass through chassis
Realize that horizontal shifting, the power head are socketed in being vertically directed on column and sliding up and down connection, power for three supporting-point pile frames
Head is connect by multiple vertical shafts with more drilling rods one by one, which is characterized in that the vertical shaft and drilling rod are at least respectively provided with a row, every row
In every drilling rod it is different in size, be in from short to long cascade arrangement, it is short preceding before being with direction of advance, it is long rear, often
It the blade depth equal length of root drilling rod and is added and is equal to stirring depth；Cross-cutting blade is equipped in the blade of drilling rod, in drilling rod cross
To when movement, transverse cuts are carried out to the soil body.
2. a kind of staged multi-shaft stirring stake machine according to claim 1, which is characterized in that the length of every drilling rod in etc.
Difference series aligned transfer, most stub boring pole length are equal to tolerance, and length scale is equal to design stirring depth divided by drilling rod number, most jumping chisel
Bar is equal to design stirring depth, the blade depth equal length of every drilling rod.
3. a kind of staged multi-shaft stirring stake machine according to claim 1, which is characterized in that the power head is driven by power
Dynamic head, vertical shaft spacing head and vertical shaft composition, it is together with power drive head is relatively fixed with vertical shaft spacing head and separated by a distance,
Vertical shaft upper end is connect with power drive head, and lower end passes through the vertical shaft hole with bearing in vertical shaft spacing head, and exposes lower end connecting filament
Button is connect with drilling rod, and the verticality of vertical shaft and drilling rod is identical as pile frame guide post.
4. a kind of staged multi-shaft stirring stake machine according to claim 3, which is characterized in that have motor in power drive head
And gearbox, motor drive vertical shaft rotating by gearbox.
5. a kind of staged multi-shaft stirring stake machine according to claim 1, which is characterized in that the drilling rod by upper section circle
The blade drilling rod of drilling rod and lower section composition, round bur bar is extension arm, i.e. every drilling rod has the round bur bar of a section or more, and blade bores
Club body has blade.
6. a kind of staged multi-shaft stirring stake machine according to claim 5, which is characterized in that the bottom end of the blade drilling rod
It is incision mixing blade, there is grout outlet in incision mixing blade upper end surface；Blade drilling rod shaft is equipped with mixing blade and revolving knife
Piece.
7. a kind of staged multi-shaft stirring stake machine according to claim 6, which is characterized in that the mixing blade and incision
Mixing blade structure is similar and along shaft arranged for interval, is up distributed from grout outlet, and cross-cutting blade is fixed on the outside of mixing blade,
There is cutting edge in front end, and the width of entire blade is slightly less than the clear spacing between adjacent drilling rod, phase does not occur between adjacent drilling rod
Mutually collision.
8. a kind of staged multi-shaft stirring stake machine according to claim 1, which is characterized in that power head is by vertical shaft and bores
Bar connects one by one, and from front to back, respectively the first vertical shaft, the second vertical shaft, last vertical shaft, the first vertical shaft and most short drill pipe connect
It connects, the second vertical shaft is connect with the second short drilling rod, and last vertical shaft is connect with longest drilling rod.
9. a kind of staged multi-shaft stirring stake machine according to claim 1, which is characterized in that most stub boring pole length, which is equal to, to be set
Meter stirring depth is divided by drilling rod number, the i.e. tolerance of arithmetic progression, and entirely most short drill pipe is blade drilling rod；Second run of steel
The length of most short drill pipe equal to twice, half length above be round bur bar, below half length be blade drilling rod；With such
It pushes away, longest run of steel is equal to design stirring depth, and the length for being equivalent to tolerance below is blade drilling rod, remaining is round bur
The blade run of steel of bar, i.e., all drilling rods is equal and is equal to tolerance；Blade drilling rod shaft is equipped with mixing blade and cross-cutting blade,
In drilling rod rotary course, do not occur mutually to collide between each blade and drilling rod.
10. a kind of staged multi-shaft stirring stake cement soil wall construction method, which is characterized in that
The first step determines the thickness and vertical shaft and drilling rod number of rows of drilling rod, further according to stirring depth and vertical shaft first according to stirring thickness
Determine run of steel and quantity；Before being with direction of advance, the length of drilling rod is in arithmetic progression aligned transfer, in the most short of forefront
Run of steel is equal to tolerance and entire most short drill pipe is blade drilling rod, and length scale is equal to design stirring depth divided by drilling rod
Number is equal to design stirring depth, the blade depth equal length of every drilling rod in the longest drilling rod of rearmost, and drilling rod is designed as
Merogenesis connection structure；
Second step, mixing pile machine are in place；Guide post and vertical shaft verticality are adjusted, vertical state is at；Carry out merogenesis installation
Drilling rod is as follows: first promoting power head, blade drilling rod is installed on the vertical shaft of rearmost, and stir and sink to soil layer, only expose and connect
Junction portion, then vertical shaft is unloaded to take off with blade drilling rod and is separated, power head is above mentioned, continues that round bur is installed on the vertical shaft of rearmost
Bar, while in previous position blade drilling rod being installed below on penultimate vertical shaft, two drilling rods are stirred simultaneously and sink to soil
Layer after blade drilling rod buries completely, then two vertical shafts is unloaded to take off with drilling rod and are separated, and promotes power head again, then bore at two
Continue that round bur bar is installed on bar, while being that blade drilling rod is installed on vertical shaft third from the bottom below at the first two, and so on, directly
To blade drilling rod is mounted on the vertical shaft of forefront, i.e., most short drill pipe installs；
Third step, for the first time whitewashing stirring；Integral sinking drilling rod simultaneously stirs and whitewashes, and submergence depth is equal to the length of most short drill pipe
Degree；The whole drilling rod that promoted simultaneously stirs and whitewashing, has just basseted to most short drill pipe bottom end, then integral sinking drilling rod and stirs, often
Secondary drilling rod sinks and what is promoted is equidistant；
4th step, the Forward of stake machine；It promotes drilling rod to be moved along after most short drill pipe bottom is just basseted, moving distance is equal to phase
Adjacent drilling rod center is away from repeating third step after reaching new stake position；
5th step, stake machine move back；When the stirring whitewashing for completing one stake of Forward, longest drilling rod is stirred to projected depth, by drilling rod
It is whole to be translated among previous stake position or two stake positions in rotation, it is whole to promote drilling rod and stir, until most stub boring
Whether bar bottom is just basseted, stir number up and down and whitewash, determine according to need；
6th step enters back into next machine Forward, stake machine and moves back, the stirring operation until completing entire cement soil wall, but from
This step starts, stake machine Forward distance be adjacent drill pipes center away from twice or 1.5 times, reach new stake position.
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