CN202644521U - Bi-directional reducing mixing pile machine - Google Patents
Bi-directional reducing mixing pile machine Download PDFInfo
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- CN202644521U CN202644521U CN 201220273973 CN201220273973U CN202644521U CN 202644521 U CN202644521 U CN 202644521U CN 201220273973 CN201220273973 CN 201220273973 CN 201220273973 U CN201220273973 U CN 201220273973U CN 202644521 U CN202644521 U CN 202644521U
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Abstract
The utility model provides a bi-directional reducing mixing pile machine which comprises a machine frame, one or two bi-directional mixing power control boxes arranged on the machine frame, an inner drill pipe, an outer drill pipe, a core pipe and a bi-directional mixing drill connected with the inner drill pipe and the outer drill pipe, wherein the inner drill pipe, the outer drill pipe and the core pipe are sleeved together coaxially. A cement paste connector is arranged on the core pipe, and a plurality of bi-directional mixing blades are arranged on the bi-directional drill. The bi-directional reducing mixing pile machine is characterized by further comprising a lifting motor and a set of lifting transmission system. Each mixing blade is formed by connecting a fixed blade and a movable blade through a hinge. The bi-directional mixing power control boxes and the lifting motor provide power for bi-directional rotation and lifting of a mixing machine respectively. According to the design requirements, the rotating direction of the bi-directional mixing motor is not changed optionally, the mixing blades are stretched and retracted to change pile diameter of mixing piles, non-reducing or reducing pile shapes are formed, project cost is saved, reinforcing effect is improved, and good applicability and economy are achieved.
Description
Technical field
The utility model belongs to building foundation engineering and equipment, specifically is a kind of bidirectional variable diameter mixer and pile using method thereof that is applicable to the processing of soft soil foundation.
Background technology
Soft Ground in the building foundation engineering is the key link that guarantees workmanship, and occupies larger proportion in the engineering total price.Engineering practices show in a large number, and the method for mixing cement and soil into pile has the advantages such as construction is simple, quick, vibration is little, can effectively improve the stability of soft foundation, the reduce with control settling amount.Cement mixing method has now developed into a kind of Treatment Methods of Soft Ground commonly used, mainly is applicable to reinforce saturated soft clay foundation.It specifically utilizes the materials such as cement (or lime) as curing compound, by special Mixing Machine, in the ground depths, on the spot with weak soil and curing compound action of forced stirring, by producing a series of physical and chemical reaction between curing compound and weak soil, weak soil is hardened into the cement mixing method with globality, water stability and some strength, this cement mixing method forms composite foundation with all soil of stake, thereby the raising bearing capacity of foundation soil reduces foundation settlement.
The cement mixing method of this routine, the pile strength of cement mixing pile can significantly reduce with the increase of the degree of depth, the shearing force that produces when blade stirs is large, mixing pile construction is large to the disturbance of pile peripheral earth, exist mixing direction single, the ground grout, stir even not, the drilling rod the inside is easily advanced slurry and is stopped up, pile quality is poor, the problems such as pile inefficiency, in the Chinese patent of patent No. ZL1704100658629 " the one-tenth pile operation method of bidirectional stirring pile ", a kind of piling method of bidirectional stirring pile is proposed, a kind of method of two-way stirring pile is proposed in the method, the method just can realize, oppositely stir simultaneously, guarantee that cement paste stirs in pile body, avoid occurring the problem of ground grout, and can improve pile quality and efficient.But the construction technology of existing Bidirectional agitator and comparison in equipment are single, can only adopt same stake footpath or can only the top reducing at same pile, and there is the soil layer of differing texture in now a lot of grounds, and the original bearing capacity of different soil is also different, different soil layer just can use different stake footpaths, what bearing capacity was large just can use the Small Diameter Pile type, and what bearing capacity was little just can use the large diameter pile type.If whole pile design large diameter pile type, cost is higher, can cause a lot of wastes; If design Small Diameter Pile type, then the density of stake increases, and can destroy the natural structure of the soil body, and self intensity of original ground also is not fully utilized.
Summary of the invention
The utility model is according to the deficiencies in the prior art, a kind of bidirectional variable diameter mixer and pile using method thereof are provided, can form according to the different original bearing capacity of the different soil of same ground the stake type in piles with different footpath, form the directly stake type of less of stake in the large aspect of original bearing capacity; Form the relatively large stake type in stake footpath in the little aspect of original bearing capacity, not only saved construction costs but also self intensity of original ground is fully used, and because the reducing of pile body has increased the frictional force of stake with original ground, the settling amount of stake is reduced, improved whole quality of pile.
Described a kind of bidirectional variable diameter mixing pile machine, comprise frame, be arranged on one or two two-way stirring headstock on the frame, coaxial package inside and outside drilling rod and core pipe and the two-way stirring drill bit that is connected with inside and outside drilling rod together, the place is provided with the cement paste joint at the core tube inlet, be provided with a plurality of two-way stirring blades at bidirectional drill, it is characterized in that: described mixing pile machine also comprises a lifting motor and a cover lifting drive system, described lifting drive system is by gearbox, worm gear case and elevating drive mechanism form, the clutch end of lifting motor is connected with worm gear case by gearbox, the clutch end of worm gear case is connected with power intake in the elevating drive mechanism, the clutch end of elevating drive mechanism with in, the elevating control end of outer drilling rod connects; Described each stirrer paddle is connected through the hinge by fixed blade and moving vane and forms.
Described elevating drive mechanism is comprised of a plurality of drives and driving-chain, and a plurality of drive scattering devices are in tower top and the bottom of frame, and wherein driving wheel is arranged on the pylon bottom, and is connected with the clutch end of worm gear case.
Every pair of stirrer paddle moving vane contraction is consistent with the direction of stretching out, and is all clockwise or is all counterclockwise.
Be provided with one or more sets by coaxial package inside and outside drilling rod and core pipe and the rabbling mechanism that the two-way stirring drill bit that is connected with inside and outside drilling rod forms together in frame, the elevating control end that overlaps rabbling mechanism is connected with the clutch end of elevating drive mechanism respectively more.The stirring power source of many cover rabbling mechanisms can adopt same, then separately controls every cover rabbling mechanism by a plurality of transfer cases; It also can be the independent stirring power source of every cover rabbling mechanism configuration one cover.
When described two-way stirring headstock is one, be overhead or underneath type, comprise an electric rotating machine, cover transmission system and a transfer case, transfer case is arranged on inside and outside drilling rod upper end, and be connected with the clutch end of electric rotating machine by transmission system, one end of the driving-chain of described elevating drive mechanism is transfer case top fixedly, and the other end passes a plurality of drives and is fixed on the transfer case lower end, and form the sealing driving-chain of an annular with transfer case; When described two-way stirring headstock was the overhead headstock, electric rotating machine was arranged on the top of transfer case, and was connected with the power intake of transfer case with power transmission shaft by gearbox; When described two-way stirring headstock is the underneath type headstock, electric rotating machine is arranged on the base of frame, be connected with the power intake of rotating disk with power transmission shaft by gearbox, rotating disk is fixed on the base of frame, and by being arranged on moment of torsion hole and the socket of outer drilling rod on the rotating disk.
When described two-way stirring headstock has two, be respectively the interior drilling rod headstock that is arranged on the drilling rod upper end and the outer drilling rod headstock that is arranged on the gantry base, include motor, gearbox and power transmission shaft; The clutch end of interior drilling rod headstock motor is connected with the control end of interior drilling rod with power transmission shaft by gearbox; The clutch end of outer drilling rod headstock motor is connected with the power intake of rotating disk with power transmission shaft by gearbox, and rotating disk is fixed on the base of frame, and by being arranged on moment of torsion hole and the socket of outer drilling rod on the rotating disk; One end of the driving-chain of described elevating drive mechanism is fixed on interior drilling rod headstock upper end, and the other end passes a plurality of drives and is fixed on interior drilling rod headstock lower end, and forms the sealing driving-chain of an annular with interior drilling rod headstock.
Establish three mutual 90 ° taper gear with curved teeth transmission mechanism in the described transfer case, be connected with interior drilling rod by interior drilling rod flange, outer drilling rod flange by inner spindle, outer mandrel is connected with outer drilling rod with the tubular loose flange by mounting flange.
The utility model more same frame is provided with one or more sets by coaxial package inside and outside drilling rod and the rabbling mechanism that forms of core pipe and the two-way stirring drill bit that is connected with inside and outside drilling rod together, and control simultaneously one or more sets rabbling mechanisms by same lifting motor and sink and promote, can once form many reducings or the stake type of reducing not.
According to designing requirement, can in each above step, add the spray air.
The utility model has increased a lifting motor, give independent power that presses down and promote of mixer, the power of Stirring is separated with the power that presses down lifting, can change at any time direction of rotation according to the design needs, but can not change the elevating movement direction of mixer, just can change the length of stirring vane by changing direction of rotation, thereby can realize the formation of pile of diameter-variable pile shape.
The utility model can be according to the different original bearing capacity of the different soil of same ground, by enlarging the two cross sections of stirring agitation pile of softer layer face, form the cement mixing method of many places reducing, take full advantage of self intensity of original ground, stake and soil are combined, and make each more primitively basic unit's face become than cushion cap of subgrade, guarantee its compatible deformation, and increase the intensity of composite foundation, not only saved construction costs but also self intensity of original ground is fully used; And because reducing has increased the frictional force of stake with original position soil, reduced the sedimentation of composite foundation, and improved whole quality of pile, reach and save the purpose that cement paste enlarges pile spacing saving construction costs; Can not only save construction costs, improve consolidation effect, good applicability and economy are arranged.
Description of drawings
Fig. 1 is the stirring headstock overhead schematic diagram of bidirectional variable diameter mixing pile machine in the utility model;
Fig. 2 is the stirring headstock underneath type schematic diagram of bidirectional variable diameter mixing pile machine in the utility model;
Fig. 3 is the schematic diagram of the stirring headstock of bidirectional variable diameter mixing pile machine in the utility model when having two;
Fig. 4 is the auxiliary box structure schematic diagram of bidirectional variable diameter mixing pile machine in the utility model;
Fig. 5 is the schematic diagram of two-way stirring blade contraction state in the utility model;
Fig. 6 is the schematic diagram of two-way stirring blade deployed condition in the utility model;
Fig. 7 is the construction flow chart of beginning reducing in the sinking process of the present utility model;
Fig. 8, the 9th, the construction flow chart of beginning reducing in the lifting process of the present utility model;
Figure 10 is the not construction flow chart during reducing of the utility model.
Among the figure: 1-frame, 1-1-base, 1-2-pylon, the 2-lifting motor, 3-two-way stirring drill bit, 4-gearbox, the 5-worm gear case, 6-chain, 7-sprocket wheel, the 8-mounting flange, 9, the inside and outside drilling rod of 10-, the 11-fixed blade, the 12-moving vane, 13-hinge, 14-electric rotating machine, drilling rod headstock in the 15-transfer case, 16-, the outer drilling rod headstock of 17-, the 18-rotating disk, 19-tubular loose flange, 20-taper gear with curved teeth, the 21-inner spindle, the outer mandrel of 22-, drilling rod flange in the 23-, the outer drilling rod flange of 24-, the 25-diameter-variable pile, the isometrical stake of 26-.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.Fig. 1,2, in 3, described a kind of bidirectional variable diameter mixing pile machine, comprise frame 1, be arranged on one or two two-way stirring headstock on the frame, coaxial package inside and outside drilling rod and core pipe and the two-way stirring drill bit 3 that is connected with inside and outside drilling rod together, the place is provided with the cement paste joint at the core tube inlet, be provided with a plurality of two-way stirring blades at bidirectional drill 3, it is characterized in that: described mixing pile machine also comprises a lifting motor 2 and a cover lifting drive system, described lifting drive system is by gearbox 4, worm gear case 5 and elevating drive mechanism form, the clutch end of lifting motor 2 is connected with worm gear case 5 by gearbox 4, the clutch end of worm gear case 5 is connected with power intake in the elevating drive mechanism, the clutch end of elevating drive mechanism with in, outer drilling rod 9,10 elevating control end connects; Described each stirrer paddle is formed by connecting by hinge 13 by fixed blade 11 and moving vane 12.
Described elevating drive mechanism is comprised of a plurality of drives 7 and driving-chain 6, driving-chain can be chain, wire rope etc., a plurality of drive scattering devices are in tower top and the bottom of frame, and wherein driving wheel is arranged on the pylon bottom, and are connected with the clutch end of worm gear case 5.
Among Fig. 5,6,12 contractions of every pair of stirrer paddle two moving vanes are consistent with the direction of stretching out, and are all clockwise or are all counterclockwise, because the direction of its Stirring is consistent, suffered original soil layer resistance is the same, only has the consistent guarantee two symmetrical moving vanes of flexible direction to stretch out simultaneously or shrink.
Be provided with one or more sets by coaxial package inside and outside drilling rod and core pipe and the rabbling mechanism that the two-way stirring drill bit 3 that is connected with inside and outside drilling rod forms together in frame, the elevating control end that overlaps rabbling mechanism is connected with the clutch end of elevating drive mechanism respectively more.When the stirring power source of many cover rabbling mechanisms can adopt one, can stir headstock by an overhead or underneath type, then separately control every cover rabbling mechanism by a plurality of transfer cases; Also can be every the independent stirring power source of cover rabbling mechanism configuration one cover, controller stirs respectively, but its elevating control adopts same set of mechanism, can realize many reducings of one-shot forming or diameter-variable pile not.
When described two-way stirring headstock is one, be overhead or underneath type, comprise an electric rotating machine 14, cover transmission system and a transfer case 15, transfer case 15 is arranged on inside and outside drilling rod 9,10 upper ends, and be connected by the clutch end of transmission system with electric rotating machine 14, one end of the driving-chain 6 of described elevating drive mechanism is transfer case 15 tops fixedly, and the other end passes a plurality of drives 7 and is fixed on transfer case 15 lower ends, and form the sealing driving-chain of an annular with transfer case; When described two-way stirring headstock was the overhead headstock, such as Fig. 1, electric rotating machine 14 was arranged on the top of transfer case 15, and was connected with the power intake of power transmission shaft with transfer case 15 by gearbox; When described two-way stirring headstock is the underneath type headstock, such as Fig. 2, electric rotating machine 14 is arranged on the base of frame, be connected with the power intake of power transmission shaft with rotating disk 18 by gearbox, rotating disk 18 is fixed on the base of frame 1, and by being arranged on moment of torsion hole and 10 sockets of outer drilling rod on the rotating disk 18.
When described two-way stirring headstock has two, such as Fig. 3, be respectively the interior drilling rod headstock 16 that is arranged on the drilling rod upper end and the outer drilling rod headstock 17 that is arranged on the gantry base, include motor, gearbox and power transmission shaft; The clutch end of interior drilling rod headstock 16 motors is connected with the control end of power transmission shaft with interior drilling rod 9 by gearbox; The clutch end of outer drilling rod headstock 17 motors is connected with the power intake of power transmission shaft with rotating disk 18 by gearbox, and rotating disk 18 is fixed on the base of frame 1, and by being arranged on moment of torsion hole and 10 sockets of outer drilling rod on the rotating disk 18; One end of the driving-chain 6 of described elevating drive mechanism is fixed on interior drilling rod headstock 16 upper ends, and the other end passes a plurality of drives 7 and is fixed on interior drilling rod headstock 16 lower ends, and forms the sealing driving-chain of an annular with interior drilling rod headstock 16.
Described rotating disk 18, on the moment of torsion hole can be oval, square, irregular polygon or regular polygon, all the profile with outer drilling rod 10 is complementary, form torsional forces, when the rotary power of inside and outside drilling rod is one, form torsional forces between rotating disk 18 and the outer drilling rod 10 and pass to transfer case 15 by outer drilling rod, then by transfer case the power that torsional forces converts inside and outside drilling rod to is controlled respectively inside and outside drilling rod rotation; When the rotary power of inside and outside drilling rod was two, the torsional forces that forms between rotating disk 18 and the outer drilling rod 10 was directly passed to outer drilling rod 10, drove outer drilling rod 10 and rotated.
Among Fig. 4, establish three mutual 90 ° taper gear with curved teeth 20 transmission mechanisms in the described transfer case 15, be connected with interior drilling rod 9 by interior drilling rod flange 23, outer drilling rod flange 24 by inner spindle 21, outer mandrel 22 passes through mounting flange 8 is connected with the tubular loose flange and is connected with outer drilling rod 10.
The utility model in use, can first the moving vane 12 of stirrer paddle be launched to sink to according to designing requirement the large pile body of degree of depth stirring formation of design reducing, the length of then dwindling stirrer paddle by the direction of rotation that changes motor, the diameter of pile body is diminished, and then the direction of rotation that changes motor makes the length that increases stirrer paddle, constantly repeat to form reducing shape body until the projected depth of sinking, then directly with its lifting or according to the pile body reverse agitating function that forms in the sinking process reducing pile body that makes formation is realized reinforcing whole reducing process such as Fig. 7; Also can be first the moving vane of stirrer paddle be dwindled and sink to projected depth, then according to the requirement that designs reducing, lengthen the length of stirring vane by the direction of rotation that changes motor, make the diameter of pile body become large, but one or many changes the motor direction of rotation and forms reducing pile body, whole reducing process such as Fig. 8, Fig. 9; Can in lifting and decline process, all not change the mixing direction of electric rotating machine yet, form the up and down isometrical pile body of equal diameters, whole implementation process such as Figure 10.
Concrete construction method of the present utility model, concrete steps are as follows:
(1). will need the levelling of the land of constructing;
(2). bidirectional variable diameter mixing pile machine of the present utility model is transported to the construction plant by referring to fixed pile location and centering;
(3). start simultaneously two-way stirring electric rotating machine and the lifting motor of bidirectional variable diameter mixing pile machine, the inside and outside drilling rod of a machine is descended and rotation along pylon, begin to stir, opening simultaneously send stock pump to soil body water-spray type slurry, under agitation in the heavy process, the rotation direction of lifting motor remains unchanged, according to designing requirement, the direction that does not change electric rotating machine stirs and sinks to projected depth, or the direction that once changes electric rotating machine stirs and to sink to projected depth, or the direction that repeatedly changes electric rotating machine stirs and sinks to projected depth;
(4). the backward rotation lifting motor begins to realize the lifting of mixer after the arrival projected depth, in lifting process, the rotation direction of lifting motor remains unchanged, according to designing requirement, the direction that does not change electric rotating machine stirs and rises to the earth's surface, or the direction that once changes electric rotating machine stirs and to rise to the earth's surface, or the direction that repeatedly changes electric rotating machine stirs and rises to the earth's surface;
(5). treat that mixer rises to the earth's surface, close slush pump, drilling tool leaves the earth's surface, and complete machine is displaced to the finger fixed pile of next pile, repeats above per step operation, finishes next root diameter identical stake or reducing pile body;
When changing the direction of electric rotating machine at every turn, the direction of rotation of stirrer paddle changes, the moving vane of each stirrer paddle is stretched out under the resistance of soil layer in position or is shunk, the shortening type blade of the extended type blade that the formation moving vane is stretched out or the contraction of moving vane just forms the reducing pile body that enlarges or dwindle in the position of design reducing.Wherein, when not changing the rotation direction of electric rotating machine, just can form the vertical type cylinder pile body of equal diameters, reducing can be at the top, middle part or bottom, and the top is the T-shaped stake, and the bottom is the inverted T-shaped stake; Repeatedly reducing can at an arbitrary position, form repeatedly diameter-variable pile.
Specific embodiment: embodiment is a certain site construction section, present three of wet spraying piles of service test, stake is long to be 12 meters, mix gray scale 14%, stake footpath 500mm, the reducing enlarged is 1000mm, wherein stake reducing cross section is distributed in respectively 1 meter of 2 meters of 3 meters degree of depth and 8 meters degree of depth, the reducing cross section of No. two stakes is distributed in respectively 2 meters at 3 meters of 0 meter degree of depth and 8 meters, and No. three whole piles of stake are reducing not.
Wherein, a stake implementation process is as follows:
A. will need the levelling of the land of constructing;
B. the bidirectional variable diameter mixing pile machine is transported to location, stake position and the centering of a stake in the construction plant;
C. start simultaneously two-way stirring electric rotating machine and the lifting motor of bidirectional variable diameter mixing pile machine, the inside and outside drilling rod of a machine is descended and rotation along pylon, begin to stir, the rotation direction of lifting motor remains unchanged in whole sinking process, this moment, the two-way stirring blade was the state that shrinks, the lower limit whitewashing liquid that bores of cutting, stake footpath 500mm are stirred in the limit;
D. after continuing to stir the degree of depth that sinks to 12 meters, change the direction of rotation of lifting motor, begin to promote, the direction of lifting motor remains unchanged in lifting process, lifting is stirred to the direction of rotation that 9 meters the degree of depth changes stake machine electric rotating machine (direction of rotation when starting is opposite), by the resistance of original position soil layer the moving vane of each stirrer paddle is stretched out, and has formed expansion type blade, strengthen the stake type that the whitewashing amount forms this section expansion this moment, the stake footpath is 1000mm;
F. when lifting is stirred to 8 meters degree of depth, again change the direction of rotation (direction of rotation when starting is consistent) of bidirectional variable diameter stake machine electric rotating machine, this moment, the moving vane of each stirring vane can become contraction state by the resistance of place soil layer again, the stake type narrows down to green diameter, and reduce the whitewashing amount this moment makes it get back to original whitewashing amount;
G. continue to promote the direction of rotation that the degree of depth that is stirred to 5 meters changes a machine again (direction of rotation when starting is opposite), resistance by the place soil layer is expanded the moving vane of each stirring vane again, formed with steps d in the expansion stake type of stake type equal diameters, strengthen simultaneously the whitewashing amount;
H. when promoting 3 meters degree of depth of stirring arrival, change again the direction of rotation (direction of rotation when starting is consistent) of bidirectional variable diameter stake machine, this moment, the moving vane of each stirring vane can shorten by the resistance on stratum, place again, stir a type that dwindles that forms with original stake type equal diameters, whitewashing this moment amount returns to whitewashing amount when starting;
I. continue to rise to the earth's surface, close slush pump, drilling tool leaves the earth's surface, and complete machine is displaced to the stake position No. two.
No. two the pile implementation process is as follows:
A. the ground with No. two stakes flattens;
B. with bidirectional variable diameter mixing pile machine and No. two stake position centerings;
C. start simultaneously two-way stirring electric rotating machine and the lifting motor of bidirectional variable diameter mixing pile machine, the inside and outside drilling rod of a machine is descended and rotation along pylon, begin to stir, the rotation direction of lifting motor remains unchanged in whole sinking process, this moment, the moving vane of two-way stirring blade was extended state, the lower limit whitewashing liquid that bores of cutting, stake footpath 1000mm are stirred in the limit;
D. after stirring arrive 3 meters degree of depth: a direction of rotation (direction of rotation when starting is opposite) that changes stake machine electric rotating machine, resistance by the original position soil layer shrinks the moving vane of each stirring vane, formed the stake type that shrinks, reduce the whitewashing amount and form the stake type that this section dwindles this moment, and the stake footpath is 500mm;
F. continue to stir when sinking to arriving 8 meters degree of depth, change again the direction of rotation (direction of rotation when starting is consistent) of bidirectional variable diameter stake machine electric rotating machine, this moment, the moving vane of two-way stirring blade can be stretched out by the resistance on stratum, place again, enlarge blade and continue to stir the expansion stake type that forms with original stake shape equal diameters, strengthen the whitewashing amount this moment, makes the whitewashing amount return to original whitewashing amount;
G. after continuing to stir 9 meters degree of depth of arrival, this changes the direction of rotation (direction of rotation when starting is opposite) of stake machine again, this moment, the moving vane of two-way stirring blade can dwindle by the resistance on stratum, place again, the same with state in the steps d, dwindle blade and continue to stir sunk to having formed dwindle the type of stake footpath for 500mm, reduce the whitewashing amount in this process;
H. the direction that just changes lifting motor after 12 meters degree of depth of continuation stirring sinking arrival begins to promote, and can keep the stirrer paddle state in the lifting process, until the earth's surface; Also can be according to the formed stake type inverted repeat above-mentioned steps of sinking, formed reducing pile body when reinforcing;
I. when mixer rises to the earth's surface, close slush pump, drilling tool leaves the earth's surface, and complete machine is displaced to the stake position No. three.
No. three the stake implementation process is as follows:
A. with No. three pile construction levelling of the land;
B. with bidirectional variable diameter mixing pile machine and location, No. three stake positions and centering;
C. start simultaneously two-way stirring electric rotating machine and the lifting motor of bidirectional variable diameter mixing pile machine, the inside and outside drilling rod of a machine is descended and rotation along pylon, begin to stir, the rotation direction of lifting motor remains unchanged in whole sinking process, this moment, the two-way stirring blade was the state that shrinks, and the lower limit whitewashing liquid that bores of cutting is stirred on the limit; Stake footpath 500mm.
D. continue to stir and sink to 12 meters the degree of depth;
E. arrive the rotation direction that changes lifting motor after 12 meters degree of depth, make mixer begin to promote, in lifting process, keep the direction of rotation of electric rotating machine until whole pile body is finished on the earth's surface.
Through the reducing pile body that forms by said method, all can combine with soil, and make each more primitively basic unit's face become than cushion cap of subgrade, guarantee its compatible deformation, and increase the intensity of composite foundation, not only saved construction costs but also self intensity of original ground is fully used; And because reducing has increased the frictional force of stake with original position soil, reduced the sedimentation of composite foundation, and improved whole quality of pile, reach and save the purpose that cement paste enlarges pile spacing saving construction costs.
Claims (7)
1. bidirectional variable diameter mixing pile machine, comprise frame (1), be arranged on one or two two-way stirring headstock on the frame, coaxial package inside and outside drilling rod and core pipe and the two-way stirring drill bit (3) that is connected with inside and outside drilling rod together, the place is provided with the cement paste joint at the core tube inlet, be provided with a plurality of two-way stirring blades at bidirectional drill (3), it is characterized in that: described mixing pile machine also comprises a lifting motor (2) and a cover lifting drive system, described lifting drive system is by gearbox (4), worm gear case (5) and elevating drive mechanism form, the clutch end of lifting motor (2) is connected with worm gear case (5) by gearbox (4), the clutch end of worm gear case (5) is connected with the power intake in the elevating drive mechanism, the clutch end of elevating drive mechanism with in, outer drilling rod (9,10) elevating control end connects; Described each stirrer paddle is formed by connecting by hinge (13) by fixed blade (11) and moving vane (12).
2. a kind of bidirectional variable diameter mixing pile machine according to claim 1, it is characterized in that: described elevating drive mechanism is comprised of a plurality of drives (7) and driving-chain (6), a plurality of drive scattering devices are in tower top and the bottom of frame, wherein driving wheel is arranged on the pylon bottom, and is connected with the clutch end of worm gear case (5).
3. a kind of bidirectional variable diameter mixing pile machine according to claim 1 and 2, it is characterized in that: every pair of stirrer paddle moving vane (12) shrinks consistent with the direction of stretching out, and is all clockwise or is all counterclockwise.
4. a kind of bidirectional variable diameter mixing pile machine according to claim 1 and 2, it is characterized in that: be provided with one or more sets by coaxial package inside and outside drilling rod and core pipe and the rabbling mechanism that the two-way stirring drill bit (3) that is connected with inside and outside drilling rod forms together in frame, the elevating control end that overlaps rabbling mechanism is connected with the clutch end of elevating drive mechanism respectively more.
5. a kind of bidirectional variable diameter mixing pile machine according to claim 2, it is characterized in that: when described two-way stirring headstock is one, be overhead or underneath type, comprise an electric rotating machine (14), one cover transmission system and transfer case (15), in transfer case (15) is arranged on, outer drilling rod (9,10) upper end, and be connected by the clutch end of transmission system with electric rotating machine (14), one end of the driving-chain of described elevating drive mechanism (6) is transfer case (15) top fixedly, the other end passes a plurality of drives (7) and is fixed on transfer case (15) lower end, and forms the sealing driving-chain of an annular with transfer case; When described two-way stirring headstock was the overhead headstock, electric rotating machine (14) was arranged on the top of transfer case (15), and was connected with the power intake of power transmission shaft with transfer case (15) by gearbox; When described two-way stirring headstock is the underneath type headstock, electric rotating machine (14) is arranged on the base of frame, be connected with the power intake of power transmission shaft with rotating disk (18) by gearbox, rotating disk (18) is fixed on the base of frame (1), and by being arranged on moment of torsion hole and outer drilling rod (10) socket on the rotating disk (18).
6. a kind of bidirectional variable diameter mixing pile machine according to claim 2, it is characterized in that: when described two-way stirring headstock has two, be respectively the interior drilling rod headstock (16) that is arranged on drilling rod upper end and be arranged on outer drilling rod headstock (17) on the gantry base, include motor, gearbox and power transmission shaft; The clutch end of interior drilling rod headstock (16) motor is connected with the control end of power transmission shaft with interior drilling rod (9) by gearbox; The clutch end of outer drilling rod headstock (17) motor is connected with the power intake of power transmission shaft with rotating disk (18) by gearbox, rotating disk (18) is fixed on the base of frame (1), and by being arranged on moment of torsion hole and outer drilling rod (10) socket on the rotating disk (18); One end of the driving-chain of described elevating drive mechanism (6) is fixed on interior drilling rod headstock (16) upper end, the other end passes a plurality of drives (7) and is fixed on interior drilling rod headstock (16) lower end, and forms the sealing driving-chain of an annular with interior drilling rod headstock (16).
7. a kind of bidirectional variable diameter mixing pile machine according to claim 5, it is characterized in that: establish three mutual 90 ° taper gear with curved teeth (20) transmission mechanism in the described transfer case (15), be connected with interior drilling rod (9) by interior drilling rod flange (23), outer drilling rod flange (24) by inner spindle (21), outer mandrel (22) is connected 19 by mounting flange (8) with the tubular loose flange) be connected with outer drilling rod (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220273973 CN202644521U (en) | 2012-06-11 | 2012-06-11 | Bi-directional reducing mixing pile machine |
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| CN 201220273973 CN202644521U (en) | 2012-06-11 | 2012-06-11 | Bi-directional reducing mixing pile machine |
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| CN 201220273973 Expired - Lifetime CN202644521U (en) | 2012-06-11 | 2012-06-11 | Bi-directional reducing mixing pile machine |
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|---|---|
| CN (1) | CN202644521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808408A (en) * | 2012-06-11 | 2012-12-05 | 彭文 | Bidirectional reducing stirring pile machine and pile formation construction method thereof |
| CN114960630A (en) * | 2022-05-05 | 2022-08-30 | 中国十七冶集团有限公司 | Change novel stirring stake drill bit that turns to and form variable cross section cement stirring soil pile |
-
2012
- 2012-06-11 CN CN 201220273973 patent/CN202644521U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808408A (en) * | 2012-06-11 | 2012-12-05 | 彭文 | Bidirectional reducing stirring pile machine and pile formation construction method thereof |
| CN102808408B (en) * | 2012-06-11 | 2014-12-24 | 彭文 | Bidirectional reducing stirring pile machine and pile formation construction method thereof |
| CN114960630A (en) * | 2022-05-05 | 2022-08-30 | 中国十七冶集团有限公司 | Change novel stirring stake drill bit that turns to and form variable cross section cement stirring soil pile |
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