CN101413263B - Rotary enlarging reducing cone spiral tray concrete filling pile and pile-forming apparatus and construction method - Google Patents

Rotary enlarging reducing cone spiral tray concrete filling pile and pile-forming apparatus and construction method Download PDF

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CN101413263B
CN101413263B CN200810196611.2A CN200810196611A CN101413263B CN 101413263 B CN101413263 B CN 101413263B CN 200810196611 A CN200810196611 A CN 200810196611A CN 101413263 B CN101413263 B CN 101413263B
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pile
hydraulic
turning cylinder
revolve
concrete
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余安南
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Abstract

The invention discloses a variable section taper screw disk concrete casting pile, a pile-forming device and a construction method related. Continuous non-overlapping big cross section taper screw disks of the pile body bear end resistance and lateral resistance, and the taper screw disks are used to help the pile body to bear pressure, and by drilling in a compaction consolidating pile bearing soil layer, increasing the end resistance area of the pile body and enlarging the diameter of a pile core, the bearing capability and the earthquake-resistant capability of the pile body are greatly improved; the pile-forming device comprises a drilling-in extension device provided with dragging screws, a drill rod, a power head and a rotary shaft hydraulic tube bank pressure distribution pressure transmission system, and has the characteristics of counterforce detection, water spraying resistance reduction, pouring lip fluid clutch, spiral screw extension, free diameter changing, concrete stirring pressurization casting, modularized combination and the like; and, the pile-forming method is as follows: by water spraying resistance reduction, the designed bearing layer thickness can be easily drilled in and accurately reached according to penetration sounding, during spiral extension moulding, the stirring pressurization casting concrete is synchronously lifted, and by one-time drilling-in and spiral lifting, all complex deformation taper screw disk casting piles are completed.

Description

Rotary enlarging reducing cone spiral tray concrete filling pile and pile making device and job practices
Technical field:
What the present invention relates to is cast-in-place concrete pile and engineering method and mechanical manufacturing field in building construction foundation field.
Background technology:
At present, the various soil layer stakes that building construction foundation field is used, although of a great variety, but be all to rely on the friction of pile body periphery or stake to hold the two kinds of forms of exerting pressure that vertical load is vertically passed to bearing stratum, under the larger geological conditions of rock stratum buried depth, all cannot solve soil layer supporting capacity low, bearing capacity of single pile is not enough, pile shaft material intensity can not make full use of, during earthquake, around pile body, bearing stratum is bearing seismic load (seismic amplitude, shake frequently, vibrate perdurabgility, acceleration, speed and mass inertia) impact under (there is softening and liquefaction) occur that overload shear failure and supporting capacity decline are lost and cause soil layer stake unstability sink-float, the structure of accurately holding underground bearing stratum changes, accurately control the technical barrier such as average out between the bearing capacity of single pile of soil layer stake and design load, and because of soil layer pile foundation cost high bearing capacity deficiency, caused the huge waste of manpower and materials.Although nearly many decades World Science technology has had development fast, multiple high-tech piling machinery and the stake of numerous distortion soil layer have been there is, and make every effort to promote bearing capacity of single pile with methods such as bellend resistance area or raising side resistance dampings, but because the reasons such as job practices is too complicated have significantly increased pile and guarantee the difficulty of pile body technical quality life requirement under complicated geological conditions, become the bottleneck of pile foundation new technology spread development.Technological deficiency for existing all kinds of soil layer stakes, the present invention will, with a kind of innovation stress model pile body and job practices and the pile making device relating to and associated mechanical mechanism that has unique profile feature and make full use of soil layer mechanical characteristic, promote change and the progress of soil layer pile foundation technology and associated mechanical manufacturing technology.
Quoting technological document has:
< < Code for design of building GB 50007-2002 > >
< < Code for investigation of geotechnical engineering GB50021---2001 > >
< < technical code for building pile foundation JGJ 94-94 > >
< < Standard for fundamental erms of geotechnical engineering GB/T 50279-98 > >
< < earthquake resistant engineering terminology standard JGJ/T 97-95 > >
Summary of the invention:
The present invention is directed to the difficult problem under the ubiquitous low bearing capacity of existing all kinds of soil layer stakes, make full use of soil layer pile body barment tag regardless of shape, when it is exerted pressure to bearing stratum, will definitely be subject to the impedance vertically opposite with the face of exerting pressure, and impedance increases with the area change of exerting pressure; When there is relative displacement trend in carrying pile body and bearing stratum, its side resistance relative displacement face all can be subject to the impedance contrary with direction of displacement, and impedance is along with the increase of relative displacement face normal pressure and the angle of relative displacement face and pile body direction of displacement increase and increase; the ability that pile body bears axial load and horizontal loading increases the mechanical characteristic of strengthening with pile body cross sectional area, invented and a kind ofly with domatic end resistance and the side of bearing of heavy in section cone spiral tray continuous helical simultaneously, hindered and make the domatic suffered counter-force keeping parallelism of spiral and not overlapping, and to be attached to the continuous heavy in section cone spiral tray auxiliary pile core body transmission axial load of pile body periphery, and can be by the stress model pile body of the random Extended lift stake of design load bearing requirements core bearing area, changing traditional soil layer pile body periphery vertical plane friction is the domatic friction of screw cone, changing the stressed end of traditional soil layer pile body and plane pressure-bearing is the domatic pressure-bearing of screw cone, by the continuous expansion cone spiral tray of pile body is domatic, vertical load is converted to and the domatic vertical end pressure of cone screw and the domatic opposite side locomotivity of cone screw, with the domatic vertical load by pile body carrying of distinctive continuously intensive and not overlapping cone spiral tray spiral, be evenly diffused into pile body around in depth bearing stratum, make pile body periphery in larger scope bearing stratum jointly participate in carrying, thereby significantly promote pile body carrying usefulness, make rotary enlarging reducing cone spiral tray concrete stake possess efficient bearer properties.
In addition in view of under violent earthquake load action, the main destruction that building foundation produces at the non-hazardous location of earthquake pile foundation bearing stratum comes from seismic amplitude, vibration duration, the acting in conjunction of acceleration and load inertia, because making part pile foundation bearing stratum produce Liquefaction Failure and shear failure under vibration and the effect of subsurface pressure water, supporting capacity decline is even lost, it to its precautionary measures, is exactly the rich supporting capacity that increases pile foundation, increase as far as possible end bearing area and reduce unit pressure-bearing surface pressure, increase stake side resistance efficiency factor, consolidated subsoil and increase pile body end resistance face periphery are sheared the length of side and are increased ground bearing stratum and effectively shear the degree of depth, and rotary enlarging reducing cone spiral tray concrete filling pile just with improve the actual area of exerting pressure (cone of take domatic with pile body axis angle as 45 degree are as example, domatic the amassing of its pressure-bearing is its approximately 1.414 times of calculating end resistance area) pressure of reduction to bearing stratum, with the spiral week number n value that expands screw cone spiral shell dish outer circumference diameter and enter bearing stratum, increasing end resistance bearing area significantly improves pile body supporting capacity and resists bearing stratum pressure-bearing surface and transship (by seismic amplitude, vibration duration, acceleration and inertia force increase pressure-bearing surface pressure and the saturated soil layer of the power of holding pore water pressure under earthquake vibration effect increase cause supporting capacity to reduce) destruction that produces, the pressure-bearing of usining is domatic have been changed existing soil layer stake side resistance and pile body as pile body side resistance rubbing surface and has been subject to the withstand shocks factor of load of parallel being unfavorable for of force direction, decay and the forfeiture of stake side resistance while being effectively reduced in seismic force effects (producing liquefaction because of impeded drainage under load and effect of vibration because the increase of bearing stratum pore water pressure makes saturated grittiness bearing stratum especially) generation, due to the spiral shell dish periphery spiral shear trimming of rotary enlarging reducing cone spiral tray stake, to run through the bearing stratum that whole pile body enters entirely dark, and shear that periphery is evenly divided into the superimposed shear layer of equal thickness entire depth and the shearing resistance degree of depth that significantly promoted pile foundation bearing stratum significantly improves the anti-shearing deformability of bearing stratum with spiral, moreover to the effective compacted effect of periphery bearing stratum, pile foundation bearing stratum is effectively reinforced piercing to revolve in expanding formation of pile because of rotary enlarging reducing cone spiral tray concrete filling pile, in addition heavy in section screw cone spiral shell dish is embedded in the bearing stratum being reinforced uniformly, make pile body and bearing stratum be in real time closely " interlock " state of stake soil " unification ", this superpower damping effect is the carrying stable state of rotary enlarging reducing cone spiral tray stake pile body in bearing stratum when effectively guaranteeing to bear seismic load impact.Also just because of the comprehensive advantage of this specific characteristic of rotary enlarging reducing cone spiral tray stake pile body, determined that the present invention's pile body possesses than the larger carrying of other various soil layer stake pile bodies and opposing earthquake shock ability.
During according to existing < < Code for design of building GB50007---2002 > > design, vertical bearing capacity of single pile characteristic value estimation formula is foundation:
R a＝q paA p+u p∑q sial i (8.5.5-1)
In formula: R a---vertical bearing capacity of single pile characteristic value;
Q pa, q sia---stake end end resistance, pile side resistance characteristic value, by the statistical analysis of local static load test result, calculated;
A p---stake bottom cross sectional area;
U p---pile body peripheral length;
L i---the thickness of i layer rock-soil layer.
With reference to < < standard > > vertical bearing capacity of single pile characteristic value estimation formula computation rule, according to rotary enlarging reducing cone spiral tray pile body feature, derive vertical bearing capacity of single pile characteristic value estimation formula as follows:
R a＝q paA p+∑n iq paiA pi+∑(q siau pin ih+q siarn iA pir)
In formula: R a---vertical bearing capacity of single pile characteristic value;
Q pa, q pai, q sia, q siar---stake end end resistance, i soil layer stake cone spiral tray end resistance, i soil layer pile side resistance characteristic value, the domatic collateral resistance characteristic value of i soil layer stake cone spiral tray, by the statistical analysis of local static load test result, calculated;
A p, A pi, A pir---stake core bottom cross sectional area, i soil layer conveyor screw single-revolution projected area, the domatic area of i soil layer conveyor screw single-revolution;
U pi---i soil layer pile body periphery is calculated the average reduced length of vertical edge spiral single-revolution;
N i---all numbers of cone spiral tray body spiral in i layer soil layer;
H---pile body spiral single-revolution perpendicular edge calculated height.
By above formula analysis, draw the domatic technical characterictic of intensive mutual nonoverlapping cone spiral tray body spiral continuously, significantly increased the end resistance area A of pile body in bearing stratum pi, vertical carrying is evenly diffused in the wider bearing stratum of periphery by pile body spiral is domatic, its single end bearing is stake end end resistance q paa pend resistance q with the domatic generation of pile body n week spiral paia pisum; And pile body side resistance is by the side resistance q that vertically side produces of n week outside pile body siau pin ithe side resistance q of h and the domatic generation of pile body n week spiral siarn ia pirsum; Just because of rotary enlarging reducing cone spiral tray pile body, have and increase potential and a low cost for long lifting n value, so it can be easily by increasing the higher bearing capacity of the long acquisition of Single Pile; Again because the cone spiral tray body expanding has enough large cross section and continuity, possessed the erosion of long-term opposing underground water and in the load of bearing stratum diffusion towards periphery and the auxiliary pile core body ability of holding biography vertical load; According to stake core loading end with pile body moving down in the degree of depth of bearing stratum, the characteristic that the vertical load of its transmission is decayed gradually, the actual compressive strength demand of each cross section of stake core body of take is implemented " reducing " as a core, can significantly promote comprehensive utilization ratio and the comprehensive load capacity of pile body pressure-bearing material.To possess the rotary enlarging reducing cone spiral tray concrete filling pile single-pile foundation scheme of large bearing capacity, substitute because of not enough many of generally adopting of traditional soil layer single pile bearing capacity and clump of piles pile foundation scheme, can reduce by a relatively large margin the cost of investment of soil layer pile foundation.
The present invention is directed to the ubiquitous process that pierces of pile-forming equipment overcomes and turns round that resistance power consumption is excessive cannot arbitrarily adjust a difficult problem for a core diameter by stake core cross section carrying demand, having researched and developed water spray drag reduction and minor diameter helps brill traction threaded drillpipe to pierce, heavy in section, timber pile footpath cone spiral tray pile body revolves piercing of expanding production out and revolves enlarging system, when piercing, can start apex point and revolve enlarging device sidewall water spray drag-reduction system appropriateness and spray water with high pressure, between soil layer and apex point drilling rod contact surface, form very thin mud lubrication layer reduction and pierce mill resistance, help drilling rod and pierce to revolve enlarging device and pierce smoothly design and specify the bearing stratum degree of depth, the spiral arc shaped rotary of research and development is stretched floor and spiral shell and is spiraled and expand the external diameter that pierces that enlarging system can effectively reduce device that revolves that lobe forms, utilization is revolved the output torque that rises process pile making device affluence and is started and to revolve enlarging system by designing requirement rotary enlarging reducing concrete perfusion pile, has reduced input cost and operation consumption that the required high pulling torque of timber pile footpath operation pile-forming equipment is exported.Utilize water spray drag reduction to pierce and revolve liter expand spiral shell reducing can the long rotary enlarging reducing high-bearing of output major diameter timber pile cone spiral tray soil layer single pile in conjunction with cone spiral tray high-bearing feature technology, with large bearing capacity rotary enlarging reducing cone spiral tray concrete filling pile single-pile foundation scheme, substitute because of not enough many of generally adopting of traditional soil layer single pile bearing capacity and clump of piles pile foundation scheme, can reduce by a relatively large margin the cost of investment of soil layer pile foundation.
The present invention is directed to traditional sinking concrete filling pile perfusing hole in perfusion cannot have control to open and a closed difficult problem, research and develop frustum dental inlay apex point hydraulic lifting and can control unlatching closed-system, guaranteed that perfusing hole can reliably open at every turn, and when concrete perfusion face reaches specified altitude assignment accurately in real time closed irrigation mouth make the unlikely waste of unnecessary concrete in drilling rod pipe; Can also in the process of perfusion, close in real time perfusing hole as required in addition, pile body be carried out to secondary and pierce squeezed perfusion.
The present invention is directed in existing bored pile piling technology and cannot point-to-point tracking job site soil layer geology change, in real time accurately to every pile according to the design bearing capacity long difficult problem of actual stake of suiting measures to local conditions, research and develop apex point and pierced shake-up counter-force detection conducting system, the variable signal of subsurface geology soil layer counter-force in the time of can monitoring at any time pile during construction and pierce, buried depth and the apex point of quick and precisely holding design appointment bearing stratum enter the degree of depth of specifying bearing stratum, and the instant variable signal data acquisition of soil layer can be offered to Computer Database intellectualized analysis platform, make technician in conjunction with known geologic report bearing stratum technical data, data and single pile design load are in conjunction with a large amount of original pile counter-force delta datas of database and real stake static load detects contrasting data accumulation achievement and safety factor is carried out sunykatuib analysis, for the long and reducing parameter of stake of every pile body provide science comparatively with reference to foundation, can solve thus the excessive difficult problem of bearing capacity of single pile that existing soil layer stake causes because of Geological Differences and construction operation difference and design bearing capacity difference, and for piling machinery and formation of pile move towards the intelligent new R&D direction that hews out from now on.
The present invention is directed to the ubiquitous high drop concrete segregation of existing cast-in-place pile concrete perfusion, aggregate precipitation, residual a large amount of bubbles in pile body concrete, in formation of pile perfusing hole in plasticity soil layer because of perfusion concrete and the unbalance problem that occurs undergauge quality accident of pressure reduction of the resilience soil body, researched and developed with positive and negative bidirectional screw blade multilayer build-up and the synthetic interior bull stick concrete-agitating pressurization system of supercharging screw rod group, can be continual drilling rod pipe inner concrete being implemented to two-way stirring makes concrete in pipe, roll up and down to guarantee concrete workability and uniformity flowable and dredges to exclude to produce residual too much bubble because of the high drop shock of a fall of concrete, in real time concrete perfusion is carried out to supercharging, and can to reductor output torque, monitor to maintain by mounting torque sensor on interior bull stick reductor injection pressure stable of the constant maintenance perfusion surface concrete of output torque, in the time of due to supercharging concrete perfusion, still keeping the uninterrupted two-way stirring to drilling rod inner concrete, so can ensure that concrete perfusion is homogeneous, thereby promote the quality of pile body filling concrete and moulding.
The present invention is directed to pierce and revolve the required turning cylinder multipath hydraulic source dispensing transmission system of enlarging device hydraulic component, having researched and developed multichannel turning cylinder hydraulic tube group (or subset of cell channels) joins and presses General hydraulic machinery mechanism and the staggered socket joint of the turning cylinder hydraulic tube group body that is linked and packed, defeated interface matches UNICOM grow the technical problem of transmitting the required pressure liquid of each hydraulic means apart from connection segment transmission one by one in rotary state and each self-corresponding static pressure source to have solved most amounts (quantity can increase and decrease arbitrarily according to demand) turning cylinder hydraulic tubes (duct) groups, for providing a kind of rotational hydraulic system of innovation to join, all kinds of rotational hydraulic systems from now on and manufacturing and designing of the hydraulic means being connected with turning cylinder press defeated press mechanism.
The present invention is according to drilling rod and pierce pile making device many power, the transmission of turning cylinder hydraulic pressure, counter-force conduction, high pulling torque, major diameter, large degree of depth pile body are provided large torsion and pierce greatly depth requirements pile-forming equipment, to adapt to the superimposed power set in middle paxilla footpath and output shaft combined interface device, meet pile-forming equipment and simplify small and exquisite, equipment investment is few, conveniently moving, the demand that pile efficiency is high; To adapt to seize power power set and turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool in timber pile footpath, at low level locking major diameter drilling rod, provide the technical scheme of high pulling torque, can meet the demand of pile making device reply high-bearing pile body pile to timber pile footpath, long, the large torsion of dark stake, high stable, also for general turning cylinder clamp mechanism transforms a kind of hydraulic-driven solution is provided to automatic control.
The present invention is directed to and revolve enlarging system closed bin and filling concrete oral fluid and press opening/closing system to expose hydraulic push rod to have researched and developed interlock and revolve and stretch enclosed hood and linkage telescopic enclosed hood isolating and protecting technical scheme, to revolving enlarging device drive unit, protect in real time, and extend its application life:
The present invention is directed to each unit interface and functional characteristics and carried out general interworking and modularized design, make the pile making device can be according to actual geological conditions and designing requirement, adopt disparate modules to combine different operation and met the need of market, with outer drilling rod, interior bull stick, the turning cylinder hydraulic tube group of innovation, counter-force conductive bar is nested integrates, and give its innovation unified supporting interface, each functional module is connected more easy to be reliable.By the feasibility of each functions of modules and combining form, science, reliability, simplicity are optimized, device have been possessed with progressive trend of epoch and keep the technical characterictic of synchronizeing.
The present invention is directed to the technical characterictic of the pile making device equipment of innovation, made with pile making device and the water spray adapting and pierced, compactedly revolve expansion, the quick piling method of supercharging perfusion, improve operating environment, simplify the operation and raise the efficiency, make whole work progress with hydraulic pressure low noise, friction, without mud, without the operation of spoir mode, meet environmental requirement, only by rig, located, continuous pierces, expansion perfusion screws out, several procedures of mobile drill and implanted reinforced bar cage complete, can significantly shorten the time of rotary enlarging reducing single pile construction cycle period, by higher automation, controlled the labour intensity that reduces operating personnel.
Technical scheme:
The present invention is directed to the unscientific realistic situation of existing all kinds of soil layer stake stress characteristic, according to rock mechanics characteristic, created soil layer pile body stress model---the rotary enlarging reducing cone spiral tray concrete filling pile with unique stress characteristic; And be the practical application of novel pile body and promote soil layer stake type to more scientific and reasonable formal transformation, improve to greatest extent soil layer pile bearing capacity, promote pile quality, optimize pile-formation process, reduce pile cost, improve pile efficiency, reduce soil layer pile foundation cost, make every effort to obtain the breakthrough on pile body feature, pile making device and piling method; The path of take in design pierce, spray water drag reduction, counter-force feeler inspection, revolve and expand cone spiral tray, the hole enlargement of stake core, positive and negative stirring, supercharging perfusion, turning cylinder hydraulic pressure to join the technical scheme such as defeated be breach, for the innovation success of pile making device and piling method has been created necessary technical condition.Its main technical schemes is as follows:
The present invention is directed in pile body pile overall process maximum possible and reduce comprehensive energy consumption and promote the technical barrier of pile body comprehensive load capacity simultaneously, adopted to reduce to pierce the increase of drilling rod external diameter and revolve enlarging device and realize secondary and expand spiral shell hole enlargement, increase water spray drag reduction, increase technical schemes such as piercing traction screw thread.With front end free bearing with revolve the hinged formation hinge through of stile free bearing axle in enlarging device shell closed bin rotary-cut mouth, middle part free bearing revolves enlarging device with the periphery that the turning cylinder that is fixed on the hinged formation rotation in the hydraulic push rod telescopic arm end retractable support on free bearing in closed bin is benchmark rotary-cut for helping auger shell line to form rotatable flexible stake core with cross section with the spiral arc floor outside pitch with footpath with drilling rod and traction, and to be nested in the hinged formation turning cylinder of spiral arc floor rotary-cut open front free bearing, middle part free bearing be hinged on that the hinged formation of the hydraulic push rod telescopic arm front end of free bearing in spiral arc floor rotates retractable support take periphery that turning cylinder is benchmark rotary-cut for helping auger shell line to revolve and expand lobe formation rotatable flexible cone spiral tray cross section and revolve enlarging device with the cone spiral tray of pitch variable cross-section profile with traction, and with outer wall installation high-voltage water injector in closed bin, in piercing process, by water injector, for piercing extension fixture and drilling rod, carry out periphery water spray lubrication drag reduction, composition can dwindle drilling rod diameter of axle water spray drag reduction and pierce and can revolve and rise diverging cone spiral shell dish and expand the large single-revolution end of pile body pile body spiral shell dish and stop area and can synchronous and asynchronously revolve low-resistance " two expansion " technical scheme that a liter expansion pile body core diameter increases pile body carrying cross-sectional area, to pierce to revolve, expand pile making device miniaturization, reach the target of the low input of pile-forming equipment low energy consumption, in order to allow " two expansion " system each function system in piercing pore-forming and revolving expansion formation of pile work and to resist the adverse effect that its geological conditions changes, adopted and its technical measures one to one: first revolving enlarging device, be divided into closed bin and filling concrete passage two parts, with closed bin, guarantee required closed environment and the operating space of system and device safe and stable operation under underground adverse circumstances, to revolve enlarging device housing internal partition, concrete passage and closed bin are carried out to internal insulation, with accurate fit manufacturing process technology, realizing cone spiral tray revolves and expands lobe and a stake footpath and revolve and expand spiral camber floor and interlock and revolve and stretch enclosed hood and coordinate with the glade plane space of housing rotary-cut fitting face, stop outside earth and concrete to clamp-on closed bin, the top of system is stretched power and is born by two power hydraulic push rods, and by corresponding servicing unit and parts (Hydraulic Station, electromagnetic valve, pressure limiting valve, flow-limiting valve, flowmeter etc.) operation, controls the flexible stroke of push rod and complete to revolve and expand action and operational order, by revolving the cross section of enlarging device in when expansion, be designed to rotate progressive curve cam-like profile, with squeezed of less secondary and little revolving, expand gradual expansion angle and reduce to revolve to expand and turn round resistance and revolve expansion energy consumption, and radially revolving the squeezed excessive face of extended surface edge extension increase, axially revolving the stupefied anti-grand native technical measures of the expansion spiral arc floor upper and lower two ends increase native rib of gear, prevent from revolving the expansion process pressurized soil body and to guarantee to revolve, expand plastotype quality to grand in boring, utilization is revolved closely knit " hyperbolic " continuously soil arch stabilising surface the supercharging in time that extended surface forms and is filled concrete perfusion, can device revolves and in the moulding formation of pile of enlarging device, promotes the moulding quality of pile body, take as far as possible by the drilling rod diameter of axle and traction tapered thread pitch as according to and with the domatic stress of pile body screw cone, stress surface intersects and not overlappingly designs the progressive variable cross-section cone screw of the suitable rotation body squeezed flap valve that stretches for principle, by revolving to expand, allow pile body have rationally the most continuous maximum cone spiral tray stake resistance face, thereby allow pile body widerly more effectively to bearing stratum transmission and diffusion, by basis, transmit the supporting capacity that the vertical load coming significantly promotes pile body, the long-pending concrete cone spiral tray that promotes in heavy in section by cone spiral tray is effectively resisted the long-term ability corroding of underground water, equally by the continuous cone spiral tray in heavy in section, promote auxiliary pile body cross section jointly to the ability of bottom transmission load and effectively promote the carrying of cone spiral tray material of body of a pile and utilize usefulness, with secondary pile body rotary enlarging reducing technology, at drilling rod, revolve in the process of liter by controlling the flexible process amount of reducing hydraulic push rod and control spiral arc hole enlargement floor and revolve and stretch, can easily realize pile body by the function of the electrodeless change warp of designing requirement, make pile body diameter according to different depth bearing strength changes in demand, can effectively reduce pile body reply carrying and promote material consumption amplitude, to take rotating speed and coordinating of hoisting velocity to be controlled adjustment technology measure in revolving expansion formation of pile, can make to revolve reamer body spiral shell valve snail and help and bore traction thread pitch restriction apart from breaking away from where necessary drilling rod, reach to change cone spiral tray pitch density or revolve expansion mode and meet and design specific (special) requirements, suitably to strengthen drilling rod and to revolve enlarging device periphery taper traction thread segment technical measures, can promote pile making device and pierce tractive force, reducing stake machine is to overcome the required too much counterweight burden of floating, to revolve and to expand the line of slope of lobe and the technical measures of section form according to pile body carrying stress form design modifying cone spiral tray, corresponding change revolve expand spiral arc floor, revolve stretch enclosed hood, cone spiral tray revolves and expands lobe profile and nested rotary-cut opening shape, can form the enlarging device that revolves that meets resistance to compression, resistance to plucking, resistance to compression resistance to plucking, the various force requests of horizontal force resistant, with the technical measures to cone spiral tray expansion lobe and spiral arc hole enlargement floor employing hard, wear-resistant Alloys Casting, in conjunction with the measure of water spray drag reduction technology, can make the cone spiral tray cross section of rotary enlarging reducing cone spiral tray grout pile body profile stressed " feature " and pile body core diameter (original core diameter and maximum are revolved and expanded core diameter) cross section " size " in long term formation of pile, keep " stablizing ", adopted in design in addition the technical measures of revolving enlarging device function adjustment configuration according to the corresponding simplification of the classification of construction task in conjunction with changing and revolve the technical measures that expand member profile with pile body stress characteristic, the available different enlarging devices that revolve of producing complete respectively cone spiral tray and stake mandrel footpath carrying out " two expansion " or one of them carries out the rotary enlarging reducing cone spiral tray concrete filling pile construction task of the difference stressed classification of " single expansion " to cone spiral tray and stake mandrel footpath, and revolve enlarging device and meet the different market demands with multiple the piercing deriving.
The present invention is directed to the large mill resistance existing in pile making device formation of pile, bearing stratum geological structure difference, filling concrete mouth open and close controlling, the separated apex point transmission of perfusing hole clutch, apex point produces disturbance to bearing stratum, when perfusing hole is closed, concrete coarse aggregate produces jam to closing face, the series technique difficult problems such as apex point tip lifting hydraulic push rod exposed and abraded, adopted conical taper variable cross-section screw thread apex point, water spray drag reduction, the conduction of counter-force feeler inspection, hydraulic pressure frustum dental inlay antiseize clutch transmission, apex point is separated with turning, expose the series technical projects such as the flexible dynamic protection of hydraulic push rod, with hollow hydraulic push rod connecting band rectangle slip location keying, to empennage, be connected hollow arbor braid frustum inner teeth group apex point with hollow connecting rod, the effectively control apex point tip of stretching that hydraulic push rod is controlled in utilization moves up and down the control unlatching and closure that realizes filling concrete mouth, the probe of usining counter-force sensing guide rod, counter-force conductive bar gravitational equilibrium hydraulic push rod and stretching out through core hole, apex point tip conducts feeler inspection head soil layer interface pressure to the gravity ceramic sensor element that is arranged on power set top and converts the reference frame that digital signal transfers changes as control design bearing stratum geology to Data Control Center to, with the technical scheme that low level feeler inspection counter-force gathers and high signal produces, overcome that gravity sensor is easy to failure in wet environment transfers unsettled technical barrier with electric signal length apart from turning cylinder, utilize counter-force to visit contact and connect the inner uterine cavity of hollow guide rod and the dynamic axis hole Sealing Technology of guide rod outer gap by the press water apex point anti-clogging water injection nozzle ejection of leading, pierce in process and pass through to control hydraulic pressure and flow according to soil properties, mud lubrication press water drag reduction layer at apex point and extension fixture and drilling rod external surface formation thin layer, can effectively reduce the wearing and tearing that pierce mill resistance and the consumption of equipment kinetic energy and pierce extension fixture, drilling rod periphery, make not reason fatigue of materials generation destruction of device, filling concrete mouth adopts frustum inner teeth fit structure and band feather key location empennage structure and the closed structure of stupefied closing antiseize of perfusing hole, make apex point and bore tail at forward and reverse two-way reliable delivery torsion, drilling rod reversion apex point disengages with soil layer the disturbance of having avoided bearing stratum immediately, during perfusing hole clutch, guarantee that apex point is concentric with drilling rod and synchronize to rotate and to prevent that hydraulic push rod is produced by external force crooked, the filling concrete passage that forms " unobstructed " while opening is stretched out on perfusing hole top, when shrinking closure, prevented that concrete coarse aggregate jam from affecting perfusing hole closed tight, with telescopic airtight cage, connect apex point empennage and revolve enlarging device housing, in formation of pile, isolating concrete the contact of hydraulic push rod exposed parts is realized it is effectively protected.
The present invention is directed to the segregation that the high drop of concrete causes, aggregate precipitation, produce that large stroke bubble is residual can not discharge and the technical barriers such as the unstable easy generation pile body undergauge of injection pressure, adopted bull stick Welded joint in superimposed bidirectional screw concrete stirring vane and filling concrete supercharging screw rod, use the forward and reverse helical blade multilayer build-up of small diameter and the welding of interior bull stick to form the real-time mixing plant of drilling rod inner concrete, when interior bull stick is positive and negative while rotating by both forward and reverse directions superimposed helical blade rotation makes drilling rod inner concrete, between two-way spiral shell leaf and drilling rod inwall cavity, rolling is mobile up and down is simultaneously stirred, the segregation causing because injecting high drop to solve drilling rod inner concrete, aggregate precipitation, the large residual problem that can not discharge of stroke bubble, and guarantee pile body concrete quality, in interior bull stick lower end, increase the supercharging reinforcement spiro rod section that external diameter is approximately less than drilling rod internal diameter, during perfusion, stirring in supercharging bull stick is rotated in the forward and by supercharging screw rod, pushes concrete perfusion downwards perfusing hole end concrete is carried out to supercharging, and the relatively stable assurance perfusing hole of bull stick reductor output torque filling concrete pressure stability in when controlling interior bull stick supercharging, prevent that pile body from the undergauge defect that concrete pipe sinking cast-in-place pile very easily produces occurring in plasticity soil layer because concrete perfusion insufficient pressure causes, the pressure that supercharging screw rod reduces filling concrete mouth by promoting the concrete of lower end in drilling rod during bull stick in reverse rotation contributes to hydraulic push rod to promote apex point closure concrete inlet, while controlling the cause for gossip of apex point filling concrete, the function of closure can be controlled pile body filling concrete face height immediately accurately, and can preserve unnecessary concrete in drilling rod and cut the waste.
The present invention is directed to and pierce the expansion hydraulic means required multichannel turning cylinder hydraulic tube group leader distance of working join the technological difficulties of pressing defeated pressure simultaneously under rotary state, adopted with turning cylinder hydraulic tube (duct) assembly pressure device, the defeated pressure scheme that is press-fitted that turning cylinder hydraulic tube (duct) group and staggered bell socket are supporting, with two ends, by circular cone roller bearing, being fixed on the radial ringed groove turning cylinder of mutually separating with sealing ring in turning cylinder hydraulic tube (duct) assembly pressure device shell makes each radial ringed groove accurately relative one by one with shell hydraulic tube interface injection hole, each radial ringed groove is connected with unique corresponding axial channel in turning cylinder by connecting hole and pushes away and pull out mouthful isometric hydraulic tube group and around center of rotation proper alignment and seal insert part and fixture, form turning cylinder the be tightly connected innovation mechanical mechanism scheme of rotation pressure liquid transmission system of socket joint of interlocking with axial stretching alternative ring to the voltage supply of turning cylinder hydraulic tube (duct) group with by the variable two ends of quantity by picking out socket joint crossover connection interface, take and meet turning cylinder list group～organize hydraulic tube (duct) group more and in rotation, do not interfere with each other with corresponding separately static Shu Yakou UNICOM and by turning cylinder hydraulic tube (duct) group and join the technical requirements of pressing defeated pressure as rotation or static liquid pressure device, for universal machine hydraulic system has increased a kind of rotation multipurpose Pei Yashu press mechanical pressing mechanism.
The present invention is directed to drilling rod interface at transmitting torque, moment of flexure, pressure, in the time of pulling force, meet to connect the flat surface, hole sealing also makes relevant each functional part synchronous technological difficulties that connect under multilayer nest assembled state adopt splined shaft and spline housing combination interfacing scheme, with splined shaft, spline housing and afterbody taper bolt, the type of attachment that afterbody circular cone pin-and-hole matches is revolved enlarging device as drill rod end with piercing, the base case of drilling rod Power Drive Unit output shaft connectivity port, antitorque to meet combined interface height, high-flexural strength, high resistance to compression, high tensile and simultaneously meet the high centering of interface, the technical requirements of high position precision, the dental inlay of usining structure, as lower interface connection scheme on interior bull stick, connects easy, easily location and the strong technical requirements of anti-twisting property to meet interface, the staggered socket joint docking of each pipe fitting of turning cylinder hydraulic tube group of usining form, as the upper and lower connection scheme of turning cylinder hydraulic tube group, meets the technical requirements of interface to antitorque, merging precision, axial displacement, dynamic seal (packing), using sleeve block, anti-wear sleeve type of attachment as interface internal axle sleeve seat, interior bull stick, the nested assembled scheme of turning cylinder hydraulic tube group, meet the hole radial location of little spatial axes and fall the technical requirements of low friction resistance, usining shaft shoulder structural form and axial compression contact surface increases antifriction metal (AFM) (or pottery) material packing ring as the scheme that is connected of multilayer nest between combined interface sleeve block, interior bull stick, turning cylinder hydraulic tube group and counter-force conductive bar, to meet the technical requirements of axial location between combiner, and using silicone rubber seal packing ring and polyurethane PU material axis hole gasket structure mode as the encapsulation scheme of combined interface plane and axis hole docking, meet the technical requirements of combined interface to flat seal, hole axle rotary seal, slipper seal.
The present invention is directed to pierce and revolve enlarging device and sectional rod requirement has driven respectively the specific (special) requirements of different construction tasks to individual functional part, to design pile body diameter of axle size and to complete the long need of stake, pierce the power output of soil depth to pile making device and equipment, equipment design strength, the large difficult problems of demand difference such as equipment construction safety and stability, adopted respectively bull stick power set technical scheme in the superimposed power set of paxilla footpath stub job task in tackling and the low level seize power set of reply timber pile path length stake job task and drilling rod top, the superimposed power set in centering paxilla footpath and speed reducer output shaft hub splines combined interface device, employing is by many dynamic retardings of drilling rod device, concrete charging aperture standpipe, interior bull stick reductor, turning cylinder hydraulic tube group pressure distribution device and gravity sensor are along the from bottom to top overlapping combination of speed reducer output shaft axial line, and each system output port is integrated into the scheme with the spline housing combination interface of drilling rod interface kit, it is compact that its scheme device has structure, the feature that pile efficiency is high, large footpath stake dynamical system has been adopted to drilling rod low level seize power set and high-order interior bull stick power set separation scheme, by concrete charging aperture standpipe, interior bull stick reductor, turning cylinder hydraulic tube group pressure distribution device and gravity sensor are along speed reducer output shaft axial line stack combinations from bottom to top, and each output port of system is integrated into jointed rod interface kit and has separated drilling rod to rotate bull stick power apparatus plan in the high position of spline housing combination interface of structure, with with many power step-down gears of heavy caliber hollow output shaft, drilling rod ring is held in the arms in wherein, and at low position locking major diameter drilling rod, to its transmission, pierce power and the drilling rod low level seize power apparatus plan that revolves lift by speed reducer output shaft hydraulic pressure free-sliding spline pawl card (folder) tool, have and provide the long stake of the major diameter rig of super large torsion can significantly reduce equipment center of gravity for need, and can reduce equipment relatively overcome super large turn round resistance required investment feature.
The present invention is directed to the fastening efficiency of traditional turning cylinder fixture low, clamping degree is low, locking is stable poor, the technological deficiencies such as automaticity is low, to having adopted a kind of making to be arranged on turning cylinder by hydraulically powered universal card (folder) mechanical mechanism between seize power power set output shaft and drilling rod, with the free-sliding spline pawl of a plurality of embedded hydraulic cylinders, by turning cylinder, join and press defeated pressing system to carry out hydraulic-driven to complete the technical scheme that " concentric is synchronizeed " of rod member or " different axle center is asynchronous " is clamped to locking action, by being fixed on speed reducer output shaft and with set a pair of (or several to) the radial ringed groove of hydraulic pressure free-sliding spline pawl card (folder) the tool connecting axle upper end sidewall of speed reducer output shaft rotation, by the adjacent a pair of sealing ring of each radial ringed groove, realize and another (or other) radial ringed groove and extraneous isolation and sealing, radial ringed groove be arranged on static liquid pressure pipe interface inwall aperture on decelerating chassis bottom shirt rim one by one relative and with jig connecting axle in pressure liquid transmission duct be separately communicated to relative jig seat end face respectively join pressure cannelure, a pair of (or every pair) join press cannelure by be connected separately join press duct respectively with in fixed piston seat two join chamber after the embedded hydraulic cylinder piston cup that is separated out by fixed piston in the embedded hydraulic cylinder of feather key pawl of pressing duct to be connected and embedded hydraulic cylinder piston, under the promotion of pressure liquid, along with making to slide before and after slide key pawl, the variation of embedded hydraulic cylinder piston cup and chamber space size after embedded hydraulic cylinder piston realizes the locking of rod member (or outside drilling rod spline locked groove) with separated, only need to drilling rod axle center, move by all free-sliding spline pawls turning cylinder hydraulic pressure free-sliding spline card (folder) tool is actual in to the locking of spline locked groove outside drilling rod simultaneously, so only need the radial ringed groove of pair of rotary axes liquid and relevant pressure liquid transmission channel to press cannelure to be respectively chamber voltage supply after the embedded hydraulic cylinder piston cup of the embedded hydraulic cylinder of all slide key pawls and embedded hydraulic cylinder piston by a pair of joining in implementing in scheme, can complete required " concentric is synchronous " and clamp locking action simultaneously, otherwise can adopt with the radial ringed groove of turning cylinder of spline pawl as much logarithm and relevant pressure liquid transmission channel by pressing cannelure to be respectively chamber voltage supply after the piston cup of the embedded hydraulic cylinder of each slide key pawl and piston joining of identical logarithm, realization, to each slide key pawl drive, completes required bias " different axle center is asynchronous " and clamps locking action, in order to make a turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool adapt to the folder lock demand to different diameter of axle rod members, scheme has increased an interchangeable diameter of axle adjusting sleeve in jig inner side, by transposing, diameter of axle adjusting sleeve is installed, the spreading slide key pawl matching by spreading slide key pawl set bolt connection slide key pawl and diameter of axle adjusting sleeve, jointly to have linked to the locking of different diameter of axle rod members (or outside drilling rod spline locked groove) with separated, thereby met turning cylinder card (folder) tool to automatically, efficiently, firm, stable, synchronously to clamping piece, transmit torsion, pulling force, with pressure and adapt to the technical requirements of the different folder diameters of axle.
The present invention has carried out standardization, modularization, interworking General design to installing each function system, makes device adopt the combination of disparate modules can complete different job tasks.Because having adopted modularization standardization design can make pile-forming equipment possess multi-functional machine, the overall characteristic of various special functions capable of being combined possesses each specialized property of independently using special designing requirement to fulfil assignment with corresponding module combination of adaptation simultaneously.With adopting special module to design the waste that the special task adapting can farthest reduce energy consumption and equipment investment cost, the diversified configuration combination of diversified module can complete diversified job task, can adapt to again the demand of market diversification, in design, to piercing, revolve enlarging device, boring rod set and speed reducer output shaft interface have adopted general hub splines combined interface constructing technology, and main modular has: hub splines mouthpiece module (comprising: spline housing combination mouthpiece, splined shaft combined interface part), drilling rod module group (comprising: bull stick hydraulic tube group extension drill rod in band, agitator hydraulic tube group extension drill rod in band, bull stick hydraulic tube group spline pawl locked groove extension drill rod in band, agitator hydraulic tube group spline pawl locked groove extension drill rod in band, in band, the outer traction of stirring booster helps and bores threaded drillpipe), pierce and revolve enlarging device module group and (comprising: cone spiral tray stake is revolved enlarging device through two piercing, cone spiral tray pierces and revolves enlarging device, cone helical burr ram footpath pierces revolves enlarging device), put with power set and interface module (comprising: middle paxilla footpath superposed type power set and hub splines combined interface system, timber pile footpath low level seize power set and turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool system, interior bull stick power set and the separated outer hub splines combined interface system that turns).
The present invention expands cone spiral tray concrete filling pile pile body resemblance and pile making device design structure functional character according to revolving, and has formulated once piercing of matching with it and has revolved the job practices that expands pile:
One. in, the job practices of paxilla footpath pile-forming equipment rotary enlarging reducing cone spiral tray concrete filling pile:
1. telephone-moving localization examination equipment extension fixture and water injection nozzle are intact, adjust counter-force conductive bar gravitational equilibrium hydraulic push rod and gravity sensor are quick on the draw and primary data " to zero ", and in reversion, bull stick stirs in real time to residual concrete in drilling rod pipe;
2. open water spraying control valve and start water spray, rod rotation speed controlled by the outer drilling rod of brill the forward rotation of falling and immersed tube speed is synchronizeed with the maintenance of drilling rod traction thread pitch, hold in real time the underground soil layer counter-force variable signal that gravity sensor feeler inspection arrives, at the uniform velocity pierce and reach bearing stratum projected depth, stop water spray;
3. top is stretched cone spiral tray hydraulic swing and is stretched cone spiral tray and revolve and expand lobe and be screwed into position, start concrete pump and progressively in drilling pipe, inject concrete, direction rotation drilling rod remain a constant speed rotary lifting, start apex point hydraulic push rod and open filling concrete mouth bull stick concrete is stirred to supercharging perfusion in forward rotation simultaneously, during if any hole enlargement designing requirement, can control hydraulic push rod by designing requirement in good time and push away and stretch the flexible process of hole enlargement arc floor and amplitude is implemented rotary enlarging reducing to cast-in-place concrete pile stake core;
4. at the uniform velocity revolve to expand and promote drilling rod and carry out hole enlargement by designing requirement, when the filling concrete face hydraulic swing of retracting during to design of pile top absolute altitude is stretched cone spiral tray and revolved expansion lobe, but when filling concrete face stops filling with face elevation to stake top, in reversion, bull stick stops concrete supercharging lifting activity apex point to cut out filling concrete mouth, continue to revolve to expand and promote drilling rod to the above stall to ground, retraction hole enlargement arc floor;
5. rig displacement, by designing requirement implanted reinforced bar cage (or drawing anchor cable wire).
Two. the job practices of timber pile footpath pile-forming equipment rotary enlarging reducing cone spiral tray concrete filling pile:
1. telephone-moving localization examination equipment revolves enlarging device and water injection nozzle is intact, adjusts counter-force conductive bar gravitational equilibrium hydraulic push rod and gravity sensor is quick on the draw and primary data " to zero ", and in reversion, bull stick stirs in real time to residual concrete in drilling rod pipe;
2. open water spraying control valve and start water spray, fall to bore and the outer drilling rod of forward rotation is controlled rod rotation speed and immersed tube speed keeps synchronous uniform velocity with drilling rod traction thread pitch, pierce after a joint drilling rod stall and stop spraying water;
3. the free-sliding spline pawl of retraction turning cylinder hydraulic pressure free-sliding spline pawl (folder) jig, accurately promotes seize power set height by extension drill rod length, and turning cylinder hydraulic pressure free-sliding spline card (folder) tool hydraulic-driven feather key pawl locking drilling rod is stretched on top;
4. open water spraying control valve and start water spray, continue that the outer drilling rod of forward rotation is controlled rod rotation speed and immersed tube speed keeps synchronizeing with drilling rod traction thread pitch, at the uniform velocity pierce after two joint drilling rods stall and stop spraying water;
5. circulation 3～4 steps, grasp the underground soil layer counter-force variable signal that gravity sensor feeler inspection arrives in real time, pierce piecemeal and respectively save drilling rod until apex point pierces reaches after bearing stratum projected depth, and top is stretched cone spiral tray hydraulic swing and stretched cone spiral tray and revolve and expand lobe and put in place;
6. start concrete pump and progressively in drilling pipe, inject concrete, reverse rotation drilling rod remain a constant speed the first joint of rotary lifting drilling rod, push away and stretch apex point hydraulic push rod and open filling concrete mouth bull stick concrete is stirred to supercharging perfusion in forward rotation simultaneously, during if any hole enlargement designing requirement, can control hydraulic push rod by designing requirement in good time and push away and stretch the flexible process of hole enlargement arc floor and amplitude is implemented rotary enlarging reducing to cast-in-place concrete pile stake core;
7. revolve stall drilling rod after emersion one joint extension drill rod height, time-out injects concrete in drilling pipe, in reversion, bull stick stops concrete supercharging to continue drilling rod inner concrete to stir, the free-sliding spline pawl of retraction turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool, by extension drill rod length, accurately fall seize power set after rise, the free-sliding spline pawl locking drilling rod of turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool is stretched on top;
8. 6～7 steps circulate, revolve piecemeal to expand to pour into promote and respectively save drilling rod, when perfusion face approaches design of pile top elevation, stop concrete pump and inject concrete in drilling pipe, the hydraulic swing of retracting when being filled into design of pile top absolute altitude is stretched cone spiral tray and is revolved expansion lobe, when being filled into stake top and stopping filling with face elevation, in reversion, bull stick stops concrete supercharging lifting activity apex point to cut out perfusing hole, continues to revolve to expand to promote drilling rod above stall to ground;
9. retraction revolves and expands camber floor, and rig displacement, by designing requirement implanted reinforced bar cage (or drawing anchor cable wire).
Beneficial effect:
Rotary enlarging reducing cone spiral tray concrete filling pile and pile making device with pile forming method have been compared significant feature difference with its unique technical characterictic with current existing various soil layer cast-in-place concrete piles and pile making device with pile forming method, and these differences have determined that rotary enlarging reducing cone spiral tray concrete filling pile and device and engineering method have following multiple advantages and gain effect:
Rotary enlarging reducing cone spiral tray concrete filling pile is with unique stress characteristic, domatic the bearing when stake hinders of heavy in section conical pallidum of protruding in cylinder stake core periphery with coiling born axial load with continuous heavy in section conveyor screw auxiliary pile core, utilize pile making device and pile forming method can be light, easy, fast, by revolving, expand pile body spiral shell and examine and seize to obtain the stressed nonoverlapping spiral of large quantity slope resistance face continuously cheaply, significantly promote bearing capacity of single pile; By revolving expansion pile body core diameter, significantly promote pile body cross section anti-pressure ability.Significantly promote pile body folk prescription concrete material bearing capacity output value with other various soil layer stake phase specific energys.
According to rotary enlarging reducing cone spiral tray concrete filling pile body stress characteristic vertical bearing capacity of single pile characteristic value derivation estimation formula:
R a＝q paA p+∑n iq paiA pi+∑(q siau pin ih+q siarn iA pir)
We learn the rotary enlarging reducing cone spiral tray ∑ n in compacted pile body bearing capacity of single pile derivation estimation formula that holes iq paia piand ∑ (q siau pin ih+q siarn ia pir) part is the key feature place of achievement pile body superpower supporting capacity, the not overlapping resistance face of the heavy in section taper spiral shell disk body end through expansion and side resistance face with its in spiral week number n value increase and with its characteristic load bearing capacity R abe directly proportional; Stake core revolves the carrying cross-sectional area that amplification is large and is directly proportional to its single pile bearing capacity; This characteristic superiority of rotary enlarging reducing cone spiral tray pile body just, along with entering the bearing stratum degree of depth when increasing, the anti-spiral shell dish end bearing surface of boring of nonoverlapping expansion is long-pending with the increase fast of n value, the synergistic bearing stratum degree of depth and load valid diffusion area synchronously increase with it, and pile body supporting capacity is significantly promoted; Along with revolving of stake core expanded a core cross sectional area is increased exponentially, pile body cross section anti-pressure ability can significantly promote undoubtedly equally.Under the same conditions by effective diverging cone spiral shell dish cross section with increase the length of pile body in bearing stratum and just can significantly promote its vertical bearing capacity of single pile (the 20 meters of stakes of take are long calculates for being listed as, pile body core diameter constant equate and pile body enter (comprise and enter and pass multilayer) can bearing stratum 10 meters in the situation that, cone spiral tray revolves and expands external diameter and get 1.5～2 times of pile body core diameter, diverging cone spiral shell dish pile body is evenly distributed on end in bearing stratum resistance reference area can reach 25～60 times of common column pile body, can reach 1～3 times of dish knot pile body, can reach 2～4.5 times of screw pile body).When controlling stake core is carried out after rotary enlarging reducing by pile body cross section compressive strength, the maximum pressure-bearing cross sectional area of its pile body can reach four times of drilling rod diameter of axle cross sectional area, in conjunction with heavy in section conical pallidum auxiliary pile core pressure-bearing, make the longitudinal external form load characteristic of pile body more reasonable than other existing soil layer stake load characteristic, the dynamic change of pile body carrying cross section longitudinally distributes more scientific, be conducive to pile body and bear larger vertical load, because rotary enlarging reducing cone spiral tray concrete filling pile stake core hole enlargement resistance to compression cross section is not with ratio and (the nonoverlapping cone spiral tray of the face of exerting pressure) end bearing surface of hole-enlargement pile core cross section are amassed with the ratio in stake footpath much larger than other all kinds of soil layer stakes, make rotary enlarging reducing cone spiral tray concrete filling pile pile body folk prescription concrete material carrying enhancing efficiency very remarkable, rotary enlarging reducing cone spiral tray concrete filling pile has overcome traditional real core concrete stake just low stake resistance and stake core cross section compressive strength can not make full use of wasting defect, also for by hole enlargement with promote material of body of a pile compressive strength and add the dark technical measures of timber pile and obtain more timber pile resistance and larger cross section anti-pressure ability and obtain larger vertical bearing capacity of single pile and opened up effective way.If the cost/supporting capacity ratio of soil layer stake of usining is considered standard as value, rotary enlarging reducing cone spiral tray concrete filling pile has the resemblance more superior than other all kinds of soil layer stakes, lower energy consumption, high environmental protection ratio more, lower material consumption and lower investment output cost advantage undoubtedly; Simultaneously also for the large footpath soil layer stake of design heavy duty of Deep Soil Layers area no longer selects basement rock to provide another new Scheme Choice as bearing stratum; And along with significantly promoting undoubtedly of soil layer stake single pile bearing capacity will be improved the present situation that extensively adopts the tradition basis of many pile foundations cushion cap and multi-column pier foundation cushion cap to build high cost because bearing capacity of single pile is not enough because of soil layer pile foundation from ancient times to the present;
Rotary enlarging reducing cone spiral tray concrete filling pile is with its distinctive resemblance, rely on to pierce to expand the ground extruding of pile body periphery bearing stratum is made to cone spiral tray pile body and bearing stratum " interlock " closely, to compare with other soil layer stake, there is the larger and intensive shearing periphery being evenly distributed in the soil layer of the long place of whole stake and (by pile body, on average enter ten meters of measuring and calculating of bearing stratum: its maximum shearing resistance edge lengths can reach 50 times of linear pattern stake, can reach ten times of dish knot stake, can reach 1.5～2.2 times of screw piles), for bearing stratum, created and under earthquake shock load action, " be enough to " opposing pile body and cut and rush the superimposed degree of depth of required shearing resistance, thereby ability and usefulness that bearing stratum opposing pile body periphery is sheared have significantly been promoted, this is also that rotary enlarging reducing cone spiral tray concrete filling pile body has antidetonation and " surpasses " capacity reserve, one of and key of the higher antidetonation buffering of acquisition " damping ", under non-hazardous location foundation soil does not collapse the prerequisite of filling cracking and liquefaction shear failure, rotary enlarging reducing cone spiral tray concrete filling pile physical efficiency is not effectively resisted earthquake moment vertical load and is impacted the settling amount that makes overload that bearing stratum produces destroy and reduce pile foundation under seismic loading,
The apex point of rotary enlarging reducing cone spiral tray concrete filling pile pile making device pierces and touches the counter-force variable signal that sensing counter-force conduction detecting function can accurately be caught subsurface geology soil layer, the variation of accurately holding underground bearing stratum buried depth with this guarantees that pile top enters design bearing stratum designated depth, and can carry out sunykatuib analysis in conjunction with feeler inspection and the static load data check analysis platform of the long-term accumulation of Computer Database, make to regulate on request soil layer stake bearing capacity of single pile to become possibility according to design bearing technology index Based Intelligent Control soil layer stake stake is long with reducing parameter, can improve thus existing soil layer stake and cross the present situation that ambassador building foundation produces unbalanced sedimentation because of the bearing capacity of single pile difference that Geological Differences and construction operation difference cause.
The piercing of rotary enlarging reducing cone spiral tray concrete filling pile pile making device revolved enlarging device and with " resistance falls in two sprays " function of apex point water spray and drilling rod sidewall water spray, can effectively be reduced in device boring procedure drilling rod and pierce the mill of extension fixture in soil layer and hinder, the energy consumption of a large amount of saveall piles, make drilling rod utilization traction cone screw thread help brill easily to pierce bearing stratum and arrive at projected depth, add that device hole enlargement functional utilization small axle diameter drilling rod revolves the function that expands the stake of large footpath, can reduce by a relatively large margin device to the demand of reductor power output and to device and frame be overcome excessive pierce to turn round hinder required torsional strength and the required too high fund input of overturning or slip resistance analysis, can prevent from again piercing and revolve enlarging device and drilling rod element of installation and because turning round resistance overload, cause and pierce bar material wearing and tearing and fatigue failure in operation.
The filling concrete outlet structure design of the apex point frustum dental inlay hydraulic pressure opening closure of rotary enlarging reducing cone spiral tray concrete filling pile pile making device, when apex point guarantees not disturbance bearing stratum, solve cast-in-place concrete pile perfusing hole and when each perfusion, can reliably open and close on demand a difficult problem, reliably open as required smooth concrete perfusion and can close on request at any time filling concrete mouth and accurately control grout pile top concreting elevation guaranteeing concrete pouring pile device perfusing hole simultaneously, reduce the waste of residual concrete in drilling rod, and the closed anti-concrete coarse aggregate jam technology of filling concrete mouth, can guarantee that apex point frustum dental inlay filling concrete mouth retains in drilling rod completes tight closure under concrete condition.
The drilling rod inner concrete of rotary enlarging reducing cone spiral tray concrete filling pile pile making device stirs the design of perfusion pressurization system, the concrete that can rely on the superimposed blade of forward and reverse spiral to produce segregation and aggregate precipitation to managing interior high drop during with interior bull stick forward and reverse both direction rotation carries out in real time two-way stirring and recovers its due workability, get rid of because high fall impact remains in a large amount of bubbles in concrete simultaneously, improve castinplace pile body concrete quality; And the filling concrete supercharging screw rod of bull stick low side in two-way stirring, when concrete perfusion, select supercharging direction of rotation, have in ready-mixed concrete, to overcome because drilling rod inner concrete storage end face just changes the filling concrete mouth injection pressure causing to change fluctuation, can reduce because filling concrete pressure changes fluctuation and be created in the soft generation that undergauge common quality defect appears in soil layer filling concrete pile body of moulding; After completing pile body filling concrete, select reverse rotation, when residual concrete continues to stir in real time in guaranteeing drilling rod, can alleviate the concrete pressure of filling concrete mouth, contribute to apex point hydraulic push rod to promote the closed filling concrete mouth of apex point;
The piercing of rotary enlarging reducing cone spiral tray concrete filling pile pile making device revolved enlarging device and aimed to revolve to expand the equipment compartment of hydraulic unit design and revolve and stretch enclosed hood, for the flexible enclosed hood of apex point lifting hydraulic push rod exposed parts design, can effectively isolate earth and concrete to piercing pollution and the wearing and tearing of extension fixture relevant device parts, extends its application life;
The hub splines combined interface technical scheme of rotary enlarging reducing cone spiral tray concrete filling pile pile making device, solved multiple rotation, the charge-coupled difficult problem dressing up global facility and realize synchronous reliable docking between parts of slide assemblies stop collar, met interface antitorque, bending resistance, tension, resistance to compression, rotate, slide, the technical requirementss such as sealing, with complete functional of interface, reliability, convenience, practicality has guaranteed that the multiple fit of long distance rotates rod member, turning cylinder hydraulic tube (duct) group waits parts integral module assembly and connection, the function of rotary enlarging reducing cone spiral tray concrete filling pile pile making device is achieved,
General turning cylinder hydraulic tube (duct) assembly of rotary enlarging reducing cone spiral tray concrete filling pile pile making device is pressed and is connected transmit machine mechanism, solved single group～organize turning cylinder hydraulic tube (duct) group under rotary state, not interfere with each other simultaneously with the corresponding separately existing UNICOM of the defeated pressure side cause for gossip of static state and connect and join a difficult problem of pressing defeated pressure more, for turning cylinder hydraulic means required in machine-building from now on and the hydraulic means being connected by turning cylinder, realize hydraulic-driven a kind of convenient and reliable universal solution be provided;
It is compact that the superimposed power plant configurations of middle paxilla footpath pile making device has speed reducer output shaft spline housing combination interface to have structure, and Finish time is short, and output efficiency is high, and to chassis equipment, manufacture requires relatively lowly, can reduce equipment investment cost; And timber pile footpath pile making device adopts seize power set to move the operation of great diameter and long pile driving construction with general turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool device at low position locking drilling rod, be conducive at low level to drill pipe transmission more greatly radially moment of torsion and axial force, reduce the investment of the antitorque reinforcing overturning or slip resistance analysis of stake machine support safety simultaneously, can by hydraulic system easily control turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool to the automatic locking of drilling rod with separated, reduce operating personnel's labour intensity.
The structural feature of rotary enlarging reducing cone spiral tray concrete filling pile pile making device and piling method determined its control easy, the fast efficiency of pile-forming speed is high and the feature that meets environmental requirement, whole bore forming process is all at low noise, friction, complete without mud, without cutting the earth, without the disturbance of stake end bearing stratum, waste without concrete in the situation that, accomplishes once to pierce to revolve to expand to promote and pours into pile single cycle and complete all pile operations; In, the job practices of paxilla footpath rotary enlarging reducing cone spiral tray concrete filling pile pile making device has operation simple and direct, the feature that output efficiency is high; And the job practices of timber pile footpath rotary enlarging reducing cone spiral tray concrete filling pile pile making device more has and reduces the whole center of gravity of pile machine equipment, for piercing pile, created the advantage that high pulling torque is more provided and pierces more greatly degree of depth acquisition larger pile stake footpath.
The standard modular design structure feature of rotary enlarging reducing cone spiral tray concrete filling pile pile making device, make each parts of device have interchangeable general interface, and derive and can complete difference and require piercing of pile task to revolve expansion operational module, by difference, configure, with " general " or " special use " combination, can derive various dissimilar pile making device, can meet the demand of market diversification, also for device fabrication and maintenance update provide convenience, market particular task and demand " are suited measures to local conditions " to combine and corresponding special-purpose " simplification " pile making device of design, can reduce by a relatively large margin equipment investment cost, for unit scale is produced, supporting maintenance, technology alternates, condition has been created in marketing and business operation.
Accompanying drawing explanation:
Figure 01. key horizon stake longitudinal section feature is to analyzing than figure.
Figure 02. rotary enlarging reducing cone spiral tray end bearing distribution detail drawing.
Figure 03. rotary enlarging reducing cone spiral tray stake side resistance distribution detail drawing.
Figure 04. key horizon stake longitudinal section end resistance comparative analysis figure.
Figure 05. key horizon stake longitudinal section side resistance comparative analysis figure.
The main deformable pile type of figure 06. rotary enlarging reducing cone spiral tray concrete filling pile pressure-bearing feature longitudinal section.
The main deformable pile type of figure 07. rotary enlarging reducing cone spiral tray concrete filling pile resistance to plucking feature longitudinal section.
In figure 08., the piling method simplified schematic diagram of paxilla footpath pile making device rotary enlarging reducing cone spiral tray concrete filling pile.
The piling method simplified schematic diagram of figure 09. timber pile footpath pile making device rotary enlarging reducing cone spiral tray concrete filling pile.
Figure 10. rotary enlarging reducing cone spiral tray piling apparatus outside drawing.
Figure 11. pierce and revolve enlarging device outward appearance and constructional drawing.
Figure 12. boring rod set outward appearance and constructional drawing.
Figure 13. middle paxilla footpath pile power set and timber pile footpath pile power set and critical component constructional drawing.
Accompanying drawing marking explanation:
Figure 01. key horizon stake type longitudinal section Characteristic Contrast is analyzed:
0101. tack cylindricality stake, 0102. tip cylindricality stake, 0103. dish knot stake, 0104. screw pile, 0105. rotary enlarging reducing pressure-bearing cone spiral tray stake;
Figure 02. figure 03. figure 04. figure 05. key horizon stake type pile body stress characteristic comparative analysis:
02. rotary enlarging reducing cone spiral tray end bearing distribution detail drawing, 03. rotary enlarging reducing cone spiral tray stake side resistance distribution detail drawing, 0201. end resistance, 0202. pile side resistance, 0401. end pressure scope that effectively extends influence, 0402. effective angle of flare of end pressure.
The main stake of figure 06. rotary enlarging reducing cone spiral tray concrete filling pile bearing strain type:
0601. bipyramid screw thread front end hole enlargement pressure bearing pile, 0602. bipyramid screw thread classification hole enlargement pressure bearing pile, 0603. tapered screw thread pressure bearing pile, the progressive hole enlargement pressure bearing pile of 0604. tapered thread, 0605. cone spiral tray expands spiral shell pressure bearing pile, 0606. cone spiral tray tail end is except spiral shell rotary enlarging reducing pressure bearing pile, the progressive rotary enlarging reducing pressure bearing pile of 0607. cone spiral tray, 0608. cone spiral tray classification rotary enlarging reducing pressure bearing pile, 0609. cone spiral tray passes through the progressive rotary enlarging reducing pressure bearing pile of weak substratum, 0610. cone spiral tray passes through weak substratum classification rotary enlarging reducing pressure bearing pile, the anti-horizontal loading pressure bearing pile of the progressive rotary enlarging reducing of 0611. cone spiral tray.
The main stake of figure 07. rotary enlarging reducing cone spiral tray concrete filling pile resistance to plucking distortion type:
The anti-horizontal loading stake of 0701. bipyramid spiral shell dish full hole enlargement pressure-bearing resistance to plucking, 0702. bipyramid spiral shell dish branch is revolved and is expanded pressure-bearing uplift pile, 0703. bipyramid screw thread classification rotary enlarging reducing uplift pile, the progressive rotary enlarging reducing uplift pile of 0704. tapered thread, 0705. cone spiral tray front end expands spiral shell uplift pile, 0706. cone spiral tray classification rotary enlarging reducing uplift pile, the stake of the progressive rotary enlarging reducing tension of 0707. cone spiral tray, the progressive rotary enlarging reducing lock of 0708. cone spiral tray end riveting anchor.
Paxilla footpath pile-forming equipment rotary enlarging reducing cone spiral tray concrete filling pile piling method sketch in figure 08.:
0801. telephone-moving localization examination equipment extension fixture and water injection nozzle are intact, adjust counter-force conductive bar gravitational equilibrium hydraulic push rod and gravity sensor are quick on the draw and primary data " to zero ", and in reversion, bull stick stirs in real time to residual concrete in drilling rod pipe;
0802. opens water spraying control valve starts water spray, rod rotation speed controlled by the outer drilling rod of brill the forward rotation of falling and immersed tube speed is synchronizeed with the maintenance of drilling rod traction thread pitch, hold in real time the underground soil layer counter-force variable signal that gravity sensor feeler inspection arrives, at the uniform velocity pierce and reach bearing stratum projected depth, stop water spray;
0803. top is stretched cone spiral tray hydraulic swing and is stretched cone spiral tray and revolve and expand lobe and be screwed into position, start concrete pump and progressively in drilling pipe, inject concrete, reverse rotation drilling rod remain a constant speed rotary lifting, start apex point hydraulic push rod and open filling concrete mouth bull stick concrete is stirred to supercharging perfusion in forward rotation simultaneously, during if any hole enlargement designing requirement, can control hydraulic push rod by designing requirement in good time and push away and stretch the flexible process of hole enlargement arc floor and amplitude is implemented rotary enlarging reducing to cast-in-place concrete pile stake core;
0804. at the uniform velocity revolves expansion promotes drilling rod and carries out hole enlargement by designing requirement, when the filling concrete face hydraulic swing of retracting during to design of pile top absolute altitude is stretched cone spiral tray and revolved expansion lobe, but when filling concrete face stops filling with face elevation to stake top, in reversion, bull stick stops concrete supercharging lifting activity apex point to cut out filling concrete mouth, continue to revolve to expand and promote drilling rod to the above stall to ground, retraction hole enlargement arc floor;
0805. rig displacement, by designing requirement implanted reinforced bar cage (or drawing anchor cable wire).
Figure 09. timber pile footpath pile-forming equipment rotary enlarging reducing cone spiral tray concrete filling pile piling method sketch:
0901. telephone-moving localization examination equipment revolves enlarging device and water injection nozzle is intact, adjusts counter-force conductive bar gravitational equilibrium hydraulic push rod and gravity sensor is quick on the draw and primary data " to zero ", and in reversion, bull stick stirs in real time to residual concrete in drilling rod pipe;
0902. opens water spraying control valve starts water spray, fall to bore and the outer drilling rod of forward rotation is controlled rod rotation speed and immersed tube speed keeps synchronous uniform velocity with drilling rod traction thread pitch, pierces after a joint drilling rod stall and stops spraying water;
The free-sliding spline pawl of 0903. retraction turning cylinder hydraulic pressure free-sliding spline pawl (folder) jig, accurately promotes seize power set height by extension drill rod length, and turning cylinder hydraulic pressure free-sliding spline card (folder) tool hydraulic-driven feather key pawl locking drilling rod is stretched on top;
0904. opens water spraying control valve starts water spray, continues that the outer drilling rod of forward rotation is controlled rod rotation speed and immersed tube speed keeps synchronizeing with drilling rod traction thread pitch, at the uniform velocity again pierces after a joint drilling rod stall and stops spraying water;
0905. circulation 3～4 steps, grasp the underground soil layer counter-force variable signal that gravity sensor feeler inspection arrives in real time, pierce piecemeal and respectively save drilling rod until apex point pierces reaches after bearing stratum projected depth, and top is stretched cone spiral tray hydraulic swing and stretched cone spiral tray and revolve and expand lobe and put in place;
0906. starts concrete pump progressively injects concrete in drilling pipe, reverse rotation drilling rod remain a constant speed the first joint of rotary lifting drilling rod, push away and stretch apex point hydraulic push rod and open filling concrete mouth bull stick concrete is stirred to supercharging perfusion in forward rotation simultaneously, during if any hole enlargement designing requirement, can control hydraulic push rod by designing requirement in good time and push away and stretch the flexible process of hole enlargement arc floor and amplitude is implemented rotary enlarging reducing to cast-in-place concrete pile stake core;
0907. revolves stall drilling rod after emersion one joint extension drill rod height, time-out injects concrete in drilling pipe, in reversion, bull stick stops concrete supercharging to continue drilling rod inner concrete to stir, the free-sliding spline pawl of retraction turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool, by extension drill rod length, accurately fall seize power set after rise, the free-sliding spline pawl locking drilling rod of turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool is stretched on top;
0908. circulation 6～7 steps, revolve piecemeal to expand to pour into promote and respectively save drilling rod, when perfusion face approaches design of pile top elevation, stop concrete pump and inject concrete in drilling pipe, the hydraulic swing of retracting when being filled into design of pile top absolute altitude is stretched cone spiral tray and is revolved expansion lobe, when being filled into stake top and stopping filling with face elevation, in reversion, bull stick stops concrete supercharging lifting activity apex point to cut out perfusing hole, continues to revolve to expand to promote drilling rod above stall to ground;
0909. retraction revolves and expands camber floor, and rig displacement, by designing requirement implanted reinforced bar cage (or drawing anchor cable wire).
Figure 10. rotary enlarging reducing cone spiral tray piling apparatus outward appearance:
Pile making device combination in paxilla footpath in 1001., 1002. timber pile footpath pile making device combinations, 1003. pierce and revolve enlarging device, 1004. cone threaded drillpipes, 1005. extension drill rod, 1006. band spline pawl locked groove extension drill rods, 1007. superimposed power set, 1008. seize power set, bull stick power set in 1009. drilling rod tops, 1010. apex point devices, 1011. turning cylinder hydraulic tube assembly pressure devices, 1012 turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tools; 1013. interior bull stick dynamic retarding devices, 1014. dynamic retarding devices.
Figure 11. pierce and revolve enlarging device outward appearance and structure:
1101. bipyramid spiral shell dishes pierce and revolve expansion (two expansion) device and pierce state diagram, 1101a. bipyramid spiral shell dish pierces and revolves expansion (two expansion) device and revolve expansion state diagram, 1102. resistance to compression cone spiral trays pierce and revolve expansion (two expansion) device and pierce state diagram, 1102a. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and revolve expansion state diagram, 1103. resistance to plucking cone spiral trays pierce and revolve expansion (two expansion) device and pierce state diagram, 1103a. resistance to plucking cone spiral tray pierces and revolves expansion (two expansion) device and revolve expansion state diagram, 1104. pierce to revolve and expand bipyramid screw thread and pierce and revolve expansion (hole enlargement) device and pierce state diagram, 1104a. bipyramid screw thread pierces and revolves expansion (hole enlargement) device and revolve expansion state diagram, 1105. resistance to compression cone screw threads pierce and revolve expansion (hole enlargement) device and pierce state diagram, 1105a. resistance to compression cone screw thread pierces and revolves expansion (hole enlargement) device and revolve expansion state diagram, 1106. resistance to plucking cone screw threads pierce and revolve expansion (hole enlargement) device and pierce state diagram, 1106a. resistance to plucking cone screw thread pierces and revolves expansion (hole enlargement) device and revolve expansion state diagram, 1107. bipyramid spiral shell dishes pierce and revolve expansion (expansion spiral shell) device and pierce state diagram, 1107a. bipyramid spiral shell dish pierces and revolves expansion (expansion spiral shell) device and revolve expansion state diagram, 1108. resistance to compression cone spiral trays pierce and revolve expansion (expansion spiral shell) device and pierce state diagram, 1108a. resistance to compression cone spiral tray pierces and revolves expansion (expansion spiral shell) device and revolve expansion state diagram, 1109. resistance to plucking cone spiral trays pierce and revolve expansion (expansion spiral shell) device and pierce state diagram, 1109a. resistance to plucking cone spiral tray pierces and revolves expansion (expansion spiral shell) device and revolve expansion state diagram, 1110. resistance to compression cone spiral trays pierce and revolve expansion (two expansion) device and revolve expansion state axonometric drawing, 1111. resistance to compression cone spiral trays pierce and revolve expansion (two expansion) device and pierce state top view, 1111a. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and revolve expansion state top view, 1112. resistance to compression cone spiral trays pierce and revolve expansion (two expansion) device and pierce state upward view, 1112a. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and revolve expansion state upward view, 1112. resistance to compression cone spiral trays pierce and revolve expansion (two expansion) device and pierce state upward view, 11A-A. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and pierce state A-A cross-sectional front view, 11B-B. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and pierce state B-B section left view, 11C-C. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and pierce state C-C cross sectional plan view, 11C-Ca. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and revolve expansion state C-C cross sectional plan view, 11D-D. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and pierce state D-D cross sectional plan view, 11D-Da. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and revolve expansion state D-D cross sectional plan view, 11E-E. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and pierce state E-E cross sectional plan view, 11E-Ea. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device and revolve expansion state E-E cross sectional plan view, 11F-F. resistance to compression cone spiral tray pierces and revolves expansion (two expansion) device F-F cross sectional plan view, 1113. apex point water jets pierce state vertical section partial enlarged drawing, 1113a. apex point water jet revolves expansion state vertical section partial enlarged drawing, 11G-G. apex point water jet G-G cross section top view, 1114. interior bull stick, hydraulic tube group, power transmission guide rod bell socket vertical section partial enlarged drawing, 1115. apex point lifting hydraulic push rods, hydraulic push rod Telescopic protective cover, power transmission guide rod gravity hydraulic equalizer pierces state vertical section detail drawing, 1115a. hydraulic push rod Telescopic protective cover revolves and expands perfusion state vertical section detail drawing,
1121. apex point afterbody, 1122 apex point tips, 1123. frustum dental inlay interfaces, 1124. directed empennage, 1125. hollow hydraulic push rod, 1126 apex point tip counter-force contact probes, 1127. gravitational equilibrium hydraulic regulation push rods, 1128. apex point water jet, 1129. apex points help and bore reducing traction screw thread, 1130. apex point afterbody splined shaft interfaces, 1131. telescopic protective cover, 1132.PU sealing ring, 1133. anti-clogging water injection nozzle, 1134. empennage featherway, 1135. empennage slip flat keys, 1136. hollow counter-force probe connecting rods, 1137. apex point afterbody frustum claw collar interfaces, 1138. counter-forces are transmitted guide rod, 1139. water filling interface, 1140 sidewall water jets,
1141. cone spiral trays revolve expansion lobe, 1142. cores revolve and expand arc floor, 1143. revolve enlarging device shell, 1144. help brill resistance to compression cone screw thread, 1145. help brill resistance to plucking cone screw thread, 1146. rotation enclosed hood, 1147. expand spiral shell lobe hydraulic push rod, 1148. expand core floor hydraulic push rod, 1149. expand core floor auxiliary hydraulic pressure push rod, 1150. appliance arrangement closed bin division boards, 1151. filling concrete passage, 1152. apex point spline housing interfaces, 1153. splined shafts are taper pin with external thread fixedly, 1154. drilling rod splined shaft interfaces, 1155. drilling rod splined shaft taper pin with external thread holes, the fixing dislocation of 1156. hydraulic tube groups bell socket part, 1157. hydraulic tube group, 1158. core pipe, 1159. interior bull stick load-bearing transmission dental inlay interface blocks, 1160. bearing, 1161. interior bull stick dental inlay bell sockets, 1162. counter-force transmission guide rod positioning bolts, 1163. prevent grand rib in soil compaction, 1164. band protective plug mouth taper pin with external thread holes, 1165 equipment closed bins, 1166. gravitational equilibrium hydraulic push rod supports, 1167. antiseize faces are stupefied to be touched by structure,
Figure 12. boring rod set outward appearance and structure:
1201. two-sided cone threaded drillpipes, 1202. resistance to compression cone threaded drillpipes, 1203. resistance to plucking cone threaded drillpipes, 1204. extension drill rod, 1205. band hydraulic pressure free-sliding spline pawl locked groove extension drill rods, bull stick in the 1206. dental inlay interfaces with two-way concrete-agitating helical blade and concrete supercharging screw rod, bull stick in the 1207. dental inlay interfaces with two-way concrete-agitating helical blade, bull stick in 1208. dental inlay interfaces, 1209. staggered spigot-and-socket hydraulic tube assembling parts, 1210. threaded drillpipe top view, 1211. threaded drillpipe upward view, 1212. extension drill rod top view, 1213. extension drill rod upward view, 1214. drilling rod splined shaft combined interface constructional detail, 1215. threaded drillpipe spline housing combination interface constructional detail, 1216. extension drill rod spline housing interface constructional detail, 1217. band hydraulic pressure free-sliding spline pawl locked groove extension drill rod spline housing combination interface constructional detail, bull stick hydraulic tube group combined interface constructional detail in 1218. drilling rod splined shafts, 1219. drilling rod hub splines bull stick turning cylinder hydraulic tube group combined interface constructional detail, 12A-A. is with the two-sided cone threaded drillpipe A-A sectional drawing of bull stick in two-way concrete-agitating helical blade and concrete supercharging screw rod, 12B-B. is with the extension drill rod B-B sectional drawing of bull stick in two-way concrete-agitating helical blade, the extension drill rod B-B sectional drawing of bull stick in 12B-Ba. band, 12C-C. has the extension drill rod C-C sectional drawing of hydraulic pressure free-sliding spline pawl locked groove with bull stick in two-way concrete-agitating helical blade, in 12C-Ca. band, bull stick has the extension drill rod C-C sectional drawing of hydraulic pressure free-sliding spline pawl locked groove, the 1220. turning cylinder hydraulic tube groups bell socket part that interlocks, 1221. cement paste special sealing ring, 1222. drilling rod splined shaft combined interface parts, 1223. drilling rod spline housing combination mouthpiece, 1224. drilling rod band hydraulic pressure free-sliding spline pawl locked groove spline housing combination mouthpiece, 1225. band tractions help bores threaded drillpipe outer tube, 1226. drilling rod outer tube, bull stick sleeve block in 1227. drilling rod interfaces, 1228. turning cylinder hydraulic tube group keepers, 1229. acetal wear-resistant plastic axle sleeves, 1230. spline pawl locked grooves,
Figure 13. middle paxilla footpath power set and timber pile footpath power set key position structure:
1301. seize power set reductor output ports and turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool device constructional drawing, 1302. superimposed power set speed reducer output shaft spline housing ports and interior bull stick reductor output port, turning cylinder hydraulic tube group, turning cylinder hydraulic tube assembly pressure device, gravity sensitive device and port configuration figure, bull stick power set reductor output port in 1303. drilling rod tops, drilling rod interface, turning cylinder hydraulic tube group, the defeated pressure interface switching device of turning cylinder hydraulic tube group, gravity sensor port configuration figure, 1304. turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool locking state constructional detail, 1304a. turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool released state constructional detail, 1305. interior bull stick, turning cylinder hydraulic tube group, turning cylinder hydraulic tube assembly pressure device, gravity sensor connectivity port constructional detail, 1306. superimposed speed reducer output shaft drilling rod spline housing combination interface constructional detail, 1307. drilling rods rotate separator constructional detail, the 1308. turning cylinder hydraulic tube groups bell socket socket joint state constructional detail that interlocks,
1310. speed reducer output shaft, 1311. seize power set decelerating chassis bottom shirt rims, 1312. hydraulic pressure free-sliding spline pawl card (folder) tool connecting axles, 1313. flat key, 1314. hydraulic pressure free-sliding spline pawl card (folder) tools connect swivel nut, 1315. hydraulic pressure free-sliding spline pawl card (folder) tool seats, 1316. diameter of axle conversion adjusting sleeves, 1317. slide key pawl, 1318. spreading slide key pawls, 1319. spreading slide key pawl set bolts, 1320. static liquid pressure pipe interfaces, 1321. radial ringed groove, 1322. sealing ring, 1323. pressure liquid transmission ducts, 1324. join pressure cannelure, 1325. card (folder) tools are joined pressure duct, the embedded hydraulic cylinder fixed piston of 1326. slide key pawl seat, 1327. fixed piston seats are joined pressure duct, 1328. slipper seal pressure liquid inject to be chewed, 1329. fixed piston connecting rod, 1330. fixed piston, the embedded hydraulic cylinder of 1331. slide key pawl, 1332. embedded hydraulic cylinder cappings, the fixing also cap of 1333. connecting rods, 1334 embedded hydraulic cylinder piston cups, chamber after 1335. embedded hydraulic cylinder pistons,
1340. gravity sensor, 1341. sensor probe, 1342. cannelure group turning cylinders, 1143. turning cylinder hydraulic tube assembly pressure device shells, 1344. cannelures and pressure liquid transmission duct UNICOM mouth, bell-and-spigot pipe is drawn in 1345. pressure liquid transmission ducts, 1346. output shaft flanges connect swivel nut, and 1347. output shaft drilling rods connect spline housing combination interface, 1148. turning cylinder hydraulic tube assembly pressure device top covers, 1349. concrete charging aperture
1350. shaft shoulders rotate declutch shaft, 1351. flange-interfaces, and 1352. flange cases,
The specific embodiment:
In the real row in Fig. 1～5:
Shown the extend influence difference of scope (0401) of rotary enlarging reducing cone spiral tray concrete filling pile (0105) and the resemblance difference of tack cylindricality stake (0101), tip cylindricality stake (0102), dish knot stake (0103) and screw pile (0104) and the end resistance (0201) producing at different characteristic pile body under gravity load effect, pile side resistance (0202) and an end pressure.
In the example of Fig. 6～7:
Mainly revolve and expand cone spiral tray concrete filling pile body (0601～0708) external form example and other derivative external form, all can be by middle paxilla footpath pile making device combination (1001) in Figure 10 or timber pile footpath pile making device combination (1002), select equipped meet that respective design requires pierce extension fixture module (1101～1109), piling method with paxilla footpath in Fig. 8 Fig. 9 and timber pile footpath pile making device is implemented pile operation, another key of variation of its external form (1101～1109) is to change and need to revolve and expand lifting process (0803 at drilling rod by design and bearing stratum, 0804, 0907, 0909) in, control in real time rod rotation speed and hoisting velocity coordinate and to expansion spiral shell lobe hydraulic push rod (1147), expand core and revolve expansion arc floor hydraulic push rod (1148, 1149) push away and stretch cone spiral tray and revolve and expand lobe (1141), stake core revolves the extension and contraction control moderately and at the right moment that expands arc floor (1142).
In Figure 10 example illustrated:
Middle paxilla footpath pile making device combination (1001) and timber pile footpath pile making device combination (1002) are revolved enlarging device (1003), band cone traction threaded drillpipe (1004), extension drill rod (1005) or are with in spline locked groove extension drill rod (1006), superimposed power set (1007) or seize power set (1008)+drilling rod top bull stick power set (1009) and configure turning cylinder hydraulic tube assembly pressure device (1011) and gravity sensor forms by piercing respectively; Device provides rotational power by corresponding power set reductor, by corresponding speed reducer output shaft (1310), output shaft drilling rod, is connected spline housing combination interface (1347) and turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool (1315) and drilling rod, is pierced the connection splined shaft combined interface (1214,1154), spline housing combination interface (1215,1216,1217,1152) and the frustum dental inlay interface (1123,1137) that revolve enlarging device and be transferred to whole drilling rod (1201～1205) and pierce extension fixture (1101～1109).
Piercing in extension fixture embodiment shown in Figure 11:
Pierce and revolve each module of enlarging device module group (1001--1009) and assemble by apex point device (1010) and the corresponding enlarging device that revolves;
Its apex point device (1010) is by the poined afterbody (1121) of band frustum claw collar interface (1137), the apex point tip (1122) of band frustum dental inlay interface (1123), directed empennage (1124), hollow lifting hydraulic push rod (1125), apex point tip counter-force contact probe (1126), gravitational equilibrium hydraulic regulation push rod (1127), apex point helps and bores reducing traction screw thread (1129), apex point afterbody splined shaft interface (1130), telescopic protective cover (1131), anti-clogging water injection nozzle (1133), empennage location featherway (1134), empennage slip flat key (1135), hollow counter-force probe connecting rod (1136), counter-force transmission guide rod (1138) etc. assembles, apex point afterbody upper end by splined shaft interface (1130) with revolve enlarging device apex point spline housing interface (1152) and be connected, to be that antiseize face is stupefied touch by constructing (1167) for apex point afterbody lower end frustum dental inlay running-on and apex point frustum dental inlay mating face, the assembling of upper end, apex point tip (1122) and directed empennage (1124), hollow hydraulic push rod (1125) link by hollow hydraulic push rod lifting, realize filling concrete mouth unlatching with closed, interlock is connected to directed empennage (1124) and revolves hollow hydraulic push rod (1125) and the concrete that the telescopic protective cover (1131) between enlarging device shell (1143) is externally exposed in real time in filling concrete passage and carry out isolating and protecting with it, apex point tip counter-force contact probe (1126) is connected with gravitational equilibrium hydraulic regulation push rod lower end (1127) by hollow counter-force probe connecting rod (1136), by the lifting of gravitational equilibrium hydraulic regulation push rod (1127), the gravity that all counter-forces of balance counter-force probe and top are transmitted guide rod (1138) guarantees that the sensor probe (1341) of reductor top gravity sensor (1340) transmits guide rod (1138) top plane contact with counter-force and realizes sensor primary data " to zero " simultaneously, being connected by output port and water filling interface (1139) from the water under high pressure of one of turning cylinder hydraulic tube transmission, see through passage force feed to apex point water jet (1128) and the extension fixture sidewall water jet (1140) with anti-clogging water injection nozzle (1133) that device forms in the hollow hydraulic push rod of the state that pierces (1125) and the perforate of hollow counter-force probe connecting rod (1136) and spray, take to reach to lubricate and pierce extension fixture and drilling rod periphery as piercing the object of drag reduction,
Revolve difference between enlarging device be to select cone spiral tray to revolve and expand lobe because of pile body loading side to change change its spiral domatic towards variation and revolve enlarging device shell supporting help the auger shell line conical surface all the time with select cone spiral tray to revolve to expand the variation that lobe is consistent, and " the two expansion " according to design requirement, spiral shell dish and stake core all expanded on the planning function (1101～1103,1101a～1103a) or only one of them expands the difference between " the list expansion " of (1104～1109,1104a～1109a) to spiral shell dish and stake core;
" two expansion " revolved enlarging device and revolved and expanded arc floor (1142) and install to be hinged on rotation enclosed hood (1146) fit and revolve on enlarging device shell (1143) rotating shaft base by stake core, by being hinged on to revolve in enlarging device equipment closed bin and revolve with stake core the hydraulically extensible that expands the hinged expansion core floor hydraulic push rod (1148) of arc floor (1142) and expand core floor auxiliary hydraulic pressure push rod (1149), realize the folding interlock that stake core revolves the rotating folding and the rotation enclosed hood (1146) that expand arc floor (1142), expand arc floor and complete to revolve when rising hole enlargement and realized the closed protective of rotation enclosed hood to equipment closed bin (1165) revolving, it is to be hingedly mounted on a core to revolve on the expansion screw shaft seat that expands arc floor (1142) that cone spiral tray revolves expansion lobe (1141), by being hinged on a core, revolving and expand arc floor (1142) and revolve and expand the hinged expansion spiral shell lobe hydraulic push rod (1147) of lobe (1141) and cone spiral tray is revolved to the hydraulically extensible that expands lobe (1141) promote with cone spiral tray, realize revolving and expand the expansion to cone spiral tray sectional dimension in formation of pile,
Be arranged on the hydraulic tube group of revolving on enlarging device shell (1143) fixing dislocation bell socket (1156) and guaranteeing that hydraulic tube group (1157) core pipe (1158) revolves enlarging device and drilling rod (1004 piercing, 1005, 1006) in connection, accurately dock and can reach and make the interior staggered spigot-and-socket hydraulic tube assembling part (1209) of drilling rod and pierce to revolve enlarging device (1003) and drilling rod synchronous rotary, by group, fix dislocation bell socket (1156) staggered spigot-and-socket hydraulic tube assembling part (1209) realization vertical " jacking " support in drilling rod to all axial location in top simultaneously, make the turning cylinder hydraulic tube group shaft shoulder depart from axle bed shoulder in interior bull stick and reduce rotary resistance, the interior bull stick load-bearing transmission dental inlay interface block (1159) that is arranged on hydraulic tube group fixing dislocation bell socket (1156) outside relies on bearing (1160) structure by docking with the socket joint of bull stick dental inlay interface in top, " stretch on top " bears the vertical gravity of bull stick in top (1206～1208), make interior bull stick spacing bore the wear-resisting copper packing of the interior bull stick turning cylinder shaft shoulder that moving axis makes fit location in the heart and axle bed shoulder reduce contact reduce in bull stick rotate to grind and hinder.
In the structure of drilling rod shown in Figure 12 example:
Drilling rod utilizes shaft shoulder structure respectively bull stick in dental inlay interface (1206,1207,1208), staggered spigot-and-socket hydraulic tube assembling part (1209) and counter-force to be transmitted to guide rod (1138) by the spacing integral body that is assembled into of demand configuration combined nesting by unified splined shaft combined interface part (1222) and spline housing combination mouthpiece (1223,1224) and the welding of drilling rod outer tube (1225,1226), makes the combination that effectively assembles into pile making device (1001,1002) of each relevant drilling rod and other functional device parts; Hub splines combined interface structure has guaranteed endwisely slipping spacing and radially freely rotating of interior bull stick (1206,1207,1208), staggered spigot-and-socket hydraulic tube assembling part (1209) simultaneously, and counter-force is transmitted the endwisely slip space of guide rod (1138) in core pipe (1158);
Drilling rod and piercing revolves enlarging device and relies on hub splines combined interface (1222, 1223, 1224) stressed evenly, radially supporting capacity is high, centering positioning precision is high, guidance quality is good, low to axle and wheel hub strength reduction, the strong advantage of interface bending resistance is being revolved enlarging device (1003) with piercing, drilling rod (1004, 1005, 1006), in the connection of output shaft drilling rod connection spline housing (1347) and hydraulic pressure free-sliding spline card (folder) tool (1315), in stable delivery high pulling torque, guaranteed bull stick (1206 in dental inlay interface, 1207, 1208), staggered spigot-and-socket hydraulic tube assembling part (1209) and counter-force are transmitted guide rod (1138) and are all realized synchronous accurately docking with one heart, after being connected with spline housing interface fit, fixes with tail end threaded circular taper pin by splined shaft, outer protective plug mouth filling protective plug in band protective plug mouth taper pin with external thread hole (1164) prevents that earth and concrete from entering,
Staggered spigot-and-socket hydraulic tube assembling part (1209) is by the staggered bell socket part (1220) of turning cylinder hydraulic tube group, turning cylinder hydraulic tube group keeper (1228) connects to form by the spot welding of the welding with core pipe (1158) and hydraulic tube group (1157), and by the staggered bell socket part (1220) of turning cylinder hydraulic tube group, the acetal wear-resistant plastic lining (1229) of turning cylinder hydraulic tube group keeper (1228) periphery reduces with the friction of interior bull stick tube wall to be made it at interior bull stick (1206, 1207, 1208) in pipe, rotate freely, by drilling rod, connect and realize between hydraulic tube group be tightly connected transmission pressure liquid guarantee all assembling of docking hydraulic tubes parts and the concentric synchronous rotary of drilling rod of staggered socket joint simultaneously,
Counter-force is transmitted guide rod (1138) and is installed in and in core pipe (1158), has been guaranteed that each counter-force transmits guide rod (1138) and can make its end face accurately to leaning on drilling rod (1201～1205), the connection that pierces extension fixture (1101～1109) and power set (1001,1009) by the counter-force transmission guide rod positioning bolt (1162) at two ends, and the bearing stratum counter-force being detected by apex point tip counter-force contact probe (1126) to top gravity sensor (1340) transmission changes.
In the structure of power transmission shown in Figure 13 example:
Turning cylinder hydraulic tube assembly pressure device (1011) is fixed on turning cylinder by bearing by cannelure group turning cylinder (1342) and joins in pressure device shell (1143) and guarantee that it rotates freely, on turning cylinder, radial ringed groove (1321) is realized in rotation and mutually being isolated and sealing with other cannelure and the external world by adjacent separately a pair of sealing ring (1322), each cannelure all with turn that to join upper static liquid pressure pipe interface (1320) the inwall perforate of pressure device shell (1143) relative one by one, each cannelure by pressure liquid transmission duct UNICOM mouth (1344) and corresponding axial compression liquid transmission duct (1323) in turning cylinder be communicated with through pressure liquid transmit duct draw bell-and-spigot pipe (1345) by pressure liquid transmission & distribution to hydraulic tube group,
Timber pile footpath seize power set are encircled drilling rod with many power step-down gears heavy caliber hollow output shaft, connect swivel nut (1314) be fixed on speed reducer output shaft (1310) above and rotate with speed reducer output shaft by turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool (1012) device by hydraulic pressure free-sliding spline pawl card (folder) tool connecting axle (1312) flat key (1313) output shaft hydraulic pressure free-sliding spline pawl card (folder) tool, the radial ringed groove (1321) of hydraulic pressure free-sliding spline pawl card (folder) tool connecting axle (1312) upper end sidewall is realized in rotation and being isolated and sealing with another cannelure and the external world by adjacent separately a pair of sealing ring (1322), two cannelures (1321) be arranged on static liquid pressure pipe interface (1320) on decelerating chassis bottom shirt rim (1311) interior wall opening one by one relative and with jig connecting axle (1312) in pressure liquid transmission duct (1323) be separately communicated to relative card (folder) tool seat (1315) end face join pressure cannelure (1324), and join, press cannelure (1324) to join by card (folder) tool being connected with each to press duct (1325) and fixed piston seat to join to press duct (1327) that the next pressure liquid of transmission is chewed to (1328) by the injection of slipper seal pressure liquid to be transported to respectively the embedded hydraulic cylinder of slide key pawl (1331) and to be fixed on chamber (1335) after embedded hydraulic cylinder piston cup (1334) that the fixed piston (1330) on the embedded hydraulic cylinder fixed piston of slide key pawl seat (1326) is separated out and embedded hydraulic cylinder piston by fixed piston connecting rod (1329), under promoting, pressure liquid along with the variation of embedded hydraulic cylinder piston cup (1334) and chamber (1335) space after embedded hydraulic cylinder piston makes to have slided before and after slide key pawl (1317), the clamping of spline locked groove (1230) outside axle part or drilling rod is locked with separated, and the diameter of axle that turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool (1012) can match according to grabbed bit freezing bar diameter of axle size Selection conversion adjusting sleeve (1316), with spreading slide key pawl set bolt (1319), connect slide key pawl (1317) and the spreading slide key pawl (1318) matching and complete clamping locking and the separating action to spline locked groove (1230) outside various outer diameter axle part or drilling rod, to expand the accommodation of turning cylinder hydraulic pressure free-sliding spline pawl card (folder) tool (1012) to various outer diameter axle part and drilling rod, saving needs the cost of investment of replacing hydraulic pressure free-sliding spline card (folder) tool because the diameter of axle converts,
The superimposed power set in middle paxilla footpath (1077) are by many dynamic retardings of drilling rod device (1014), concrete charging aperture (1349) standpipe, interior bull stick dynamic retarding device (1013), turning cylinder hydraulic tube assembly pressure device (1011), gravity sensor (1340) is along the rotating shaft core line superimposed integral body that is assembled in succession, and by output shaft flange connection swivel nut (1346), be connected being connected of spline housing (1347) and speed reducer output shaft by output shaft drilling rod spline housing combination interface (1306) with output shaft drilling rod, integrated drilling rod transmission, interior bull stick transmission, the transmission of hydraulic tube group and staggered socket joint seal synchronous link technique, guaranteed the unification with drilling rod hub splines interface,
In timber pile footpath, bull stick power set (1303) are by charging aperture (1349) standpipe, interior bull stick deceleration device (1013), turning cylinder hydraulic tube assembly pressure device (1011), gravity sensor (1340) is along the rotating shaft core line superimposed integral body that is assembled in succession, by output shaft drilling rod spline housing interface (1217), integrated interior bull stick transmission, hydraulic tube group is rotated and the socket joint that interlocks seals synchronous link technique, realized the unification with drilling rod hub splines interface, drilling rod rotates separator (1307) application duplex bearing (1160), the shaft shoulder rotates declutch shaft (1350), flange case (1352) be configured in being connected of flange-interface (1351) realized outer drilling rod when realizing outer drilling rod connection radial rotating no longer to top propagation function.

Claims (10)

1. one kind revolves expansion mode ground extruding bearing stratum to pierce, and with the domatic acquisition end resistance of heavy in section cone screw and side resistance, and increase by spiral-expanding the rotary enlarging reducing cone spiral tray concrete filling pile that stake core cross section comprehensively promotes bearing capacity, it is characterized in that: by revolving to expand to be poured in, in bearing stratum, form with the coiling of heavy in section conical pallidum and protrude the reducing cylinder pile body of periphery, and to form the longitudinal auxiliary pile core carrying of the heavy in section continuous helical cone at appropriate inclination angle with pile body axis, simultaneously with the domatic vertical load to the even transfer spreading pile body carrying of bearing stratum of screw cone, and can need to arbitrarily revolve expansion change pile body core diameter according to design and carrying.
2. described in claim 1, to pierce, revolve the pile making device that expansion mode completes rotary enlarging reducing cone spiral tray concrete filling pile, by special joining, construct power set, sectional rod, pierce and revolve enlarging device, spigot-and-socket turning cylinder connecting fluid pressure pipe assembling part, turning cylinder is joined the defeated press mechanism of pressure, gravity sensitive device, turning cylinder hydraulic pressure free-sliding spline pawl clip tool assembles, it is characterized in that: by piercing water spray drag-reduction system, soil layer counter-force feeler inspection sensor-based system, filling concrete oral fluid presses off keying assembly system, the moulding enlarging system that revolves of pile body, study of concrete secondary mixing perfusion pressurization system, defeated pressing system is pressed in the assembly of turning cylinder hydraulic tube, special combination connected system and turning cylinder hydraulic pressure feather key spline pawl locker clamping system, power-driven system multisystem has been worked in coordination with pile work.
3. piercing of rotary enlarging reducing cone spiral tray concrete filling pile pile making device revolved enlarging device according to claim 2, by revolving enlarging device and apex point forms, it is characterized in that: revolve enlarging device housing and be cone threaded collar around and with the cylindric external form of drilling rod with footpath, inside be divided into filling concrete passage and equipment closed bin two parts, upper end is the drilling rod splined shaft port that is connected, lower end is apex point spline housing combination connectivity port, hinged being provided with of equipment closed bin opening part revolved expansion arc floor and to be hinged on airtight bulkhead axle bed, realized rotary extension with the push-and-pull of revolving the hydraulic push rod that expands spiral arc floor axle bed with the rotation enclosed hood that revolves the coaxial hinged interlock of expansion arc floor, stake core revolves and expands the hinged cone spiral tray that is provided with of spiral arc floor rotary-cut opening and revolve and expand lobe and expand spiral arc floor axle bed and cone spiral tray and revolve the push-and-pull of expanding the hydraulic push rod of connection shaft seat in lobe and realize rotary extension by being hinged on to revolve, revolve enlarging device and can not only be assembled into according to demand to revolve and expand cone spiral tray and can revolve the two functions that expand that expand pile body core diameter simultaneously and revolve enlarging device, also can simplified construction be assembled into only to revolve to expand cone spiral tray or only revolve the single function that expands that expands pile body core diameter and revolve enlarging device, apex point is to form around the apex point tip of the cone external form of cone reducing screw thread and apex point afterbody, apex point tip and apex point tail are frustum dental inlay Bidirectional locking clutch structure, apex point afterbody upper end for revolve enlarging device with the supporting splined shaft interface in footpath with revolve enlarging device housing lower end spline housing interface cover and share tailing screw flight pin and fix, apex point tip connects the directed empennage of apex point and is mounted on the hollow hydraulic push rod lower end, apex point tip of revolving in enlarging device housing closed bin with hollow connecting rod, by the feather key on directed empennage, coordinate with the orientation of the featherway of apex point afterbody inner side, apex point tip and apex point afterbody mating face frustum Bidirectional locking dental inlay are configured in each opening and closing and remain that interface aligns, when closed, the interior stupefied limit of apex point afterbody lower end flat mouth and apex point tip epicone table top touch and lean on, counter-force probe and counter-force conduction hollow connecting rod are through apex point tip and hollow connecting rod, the directed empennage of apex point, hydraulic pressure hollow push rod is connected with the counter-force guide rod gravitational equilibrium hydraulic regulation push rod lower end being arranged in extension fixture housing closed bin, when drilling rod pierces, apex point tip and apex point afterbody frustum dental inlay face are closed, extension fixture water filling duct, apex point hydraulic pressure hollow push rod, counter-force conduction hollow connecting rod, the tapping in apex point water filling duct utilizes apex point hydraulic pressure hollow push rod in aligned condition and by hole sealing technology, counter-force conduction hollow connecting rod cavity forms apex point water spray passage, water jet taper recess inner bolt hole is installed anti-clogging water injection nozzle, the jacking and counter-force guide rod gravitational equilibrium hydraulic regulation push rod upper end makes progress, make the end contact of all counter-force conductive bar in top and make face topmost contact and keep the sensitive and initial counter-force of sensitive detection parts " to zero " with the gravity sensor probe bottom surface at unit head top, allow at any time gravity sensor thoughts and feelings paving catch the signal that apex point tip soil layer counter-force changes, flexible enclosed hood is connected between the Directional Drilling fine stern wing and extension fixture housing with the apex point lifting contracting that links to be stretched, revolve axle bed in the splined shaft combined interface end of enlarging device upper end fixedly bell socket hydraulic tube group is installed, upper end is communicated with hydraulic tube group socket joint in drilling rod, the interior turning cylinder hydraulic tube group of top rod is synchronously followed and revolve enlarging device rotation, each hydraulic pressure mouth of pipe output of lower end is connected with each hydraulic means corresponding interface in closed bin, hydraulic tube group fixedly bell socket outside is provided with interior bull stick load-bearing and rotates dental inlay interface block and dock with interior bull stick dental inlay interface in the drilling rod of upper end, pierce and revolve enlarging device and draw cone screw thread and cone spiral tray outward and revolve that to expand lobe cross section stress characteristic consistent.
4. the sectional rod of rotary enlarging reducing cone spiral tray concrete filling pile pile making device according to claim 2, it is characterized in that: by splined shaft combined interface part and spline housing combination mouthpiece or with the spline housing combination mouthpiece of keyway fore shaft with without screw thread or with the drilling rod outer tube of cone screw thread, weld, the interior axle bed that utilizes splined shaft mouthpiece and spline housing mouthpiece and interior bull stick with dental inlay port or be with positive and negative stirring spiral shell leaf and supercharging screw rod in bull stick and be with bull stick in positive and negative stirring spiral shell leaf, turning cylinder hydraulic tube group, shaft shoulder structure between counter-force conductive bar end carries out by functional requirement the sectional rod that axial limiting combination is assembled into Various Functions, counter-force conductive bar is installed in the core pipe that is nested in turning cylinder hydraulic tube group and is guaranteed certain space that endwisely slips, drilling rod draws cone screw thread outward and pierces that to revolve enlarging device epimere consistent.
5. the hub splines combined interface of rotary enlarging reducing cone spiral tray concrete filling pile pile making device according to claim 2, it is characterized in that: with splined shaft, spline housing, tailing screw flight pin, be fixed as device end outer shaft component interface type of attachment, by splined shaft and spline housing, at fit, connect the staggered bell and spigot of interior bull stick dental inlay mouth, turning cylinder hydraulic tube group that simultaneously makes to be linked in interior axle bed and synchronize and be connected with phase connection interface separately, with interface, in conjunction with seal washer and the socket joint pore hole Simmer ring of plane, realize combination sealing.
6. the spigot-and-socket turning cylinder hydraulic tube of rotary enlarging reducing cone spiral tray concrete filling pile pile making device is assembled part according to claim 2, it is characterized in that: to insert and to pass the staggered bell socket part in two ends and hydraulic tube group keeper has the core pipe of appropriate rigidity and staggered bell socket part end face presents interval and stretches out and hydraulic pressure nest of tubes being welded and fixed by tube wall and hydraulic tube group keeper and staggered bell socket part of interval indentation around core pipe surrounding proper alignment at two ends, all hydraulic pipe and core Guan Tongchang, pipe end is unified pulls out mouth for pushing away, two ends mouth of pipe indentation port sizes is greater than stretches out port sizes and consistent size, nearly aperture, inwall two ends, the staggered all pipe end indentations of bell socket part hole is equipped with the relative hole Simmer ring of a pair of sealing ring limit mouth, the pushing away tube drawing mouth and can accurately be inserted in sealing ring of every insertion, staggered bell socket part and hydraulic tube group keeper are cylindric, bearing shell cannelure in its periphery is embedded in anti-wearing liner.
7. the turning cylinder pressure liquid distribution mechanism of the turning cylinder hydraulic tube assembly pressure device of rotary enlarging reducing cone spiral tray concrete filling pile pile making device according to claim 2, it is characterized in that: by fixing of two terminal circle taper roller bearing is positioned to turning cylinder by cannelure turning cylinder, join in pressure device shell axis hole, cannelure group turning cylinder has the radial ringed groove of an above quantity at least, on turning cylinder, each radial ringed groove both sides is all provided with a pair of sealing ring and other cannelure and the external world and isolates and realize sealing, each cannelure all with turn that to join on pressure device shell static liquid pressure pipe interface inwall position of opening relative one by one, each cannelure transmits hole link by respective shaft in UNICOM's mouth and turning cylinder to hydraulic fluid, and through hydraulic fluid transmission duct, draw bell-and-spigot pipe by hydraulic fluid transmission & distribution to turning cylinder hydraulic tube group, in turning cylinder central duct, joining pressure device closure head hub-interface hole with turning cylinder aligns, under by drawing socket joint core pipe and turning cylinder hydraulic tube core assembly pipe socket joins.
8. the general turning cylinder pressure-driven of the turning cylinder hydraulic pressure free-sliding spline pawl clip tool clamping mechanical mechanism of rotary enlarging reducing cone spiral tray concrete filling pile pile making device according to claim 2, it is characterized in that: by hydraulic pressure slide key spline pawl jig connecting axle, flat key, output shaft hydraulic pressure slide key spline pawl clip tool connects swivel nut, be fixed on speed reducer output shaft and with speed reducer output shaft and rotate, the a pair of above radial ringed groove of hydraulic pressure slide key spline pawl jig connecting axle upper end sidewall is realized and another cannelure and extraneous isolation and sealing by adjacent separately a pair of sealing ring, radial ringed groove be arranged on static liquid pressure pipe interface on decelerating chassis bottom shirt rim in wall opening one by one relative and with jig connecting axle in hydraulic fluid separately transmit that duct is communicated to corresponding jig seat end face join pressure cannelure, each is joined and presses cannelure by joining and press duct and fixed piston seat to join to press duct and the embedded hydraulic cylinder that slides to be fixed on by fixed piston connecting rod hydraulic cylinder piston cup and the hydraulic cylinder piston Hou Shi UNICOM that the fixed piston on slip hydraulic cylinder fixed piston seat is separated out with the jig being connected separately, under promoting, hydraulic fluid pressure slides before and after the variation slide key pawl of chamber space size after along with hydraulic cylinder piston cup and hydraulic cylinder piston, diameter of axle conversion adjusting sleeve can be installed in turning cylinder hydraulic pressure free-sliding spline pawl jig inner side, connects slide key pawl jointly link with the spreading slide key pawl matching with spreading slide key pawl set bolt.
9. the power set of rotary enlarging reducing cone spiral tray concrete filling pile pile making device according to claim 2, it is characterized in that: timber pile footpath power-driven system by seize power set with many dynamic retardings device ring around being arranged symmetrically in greatly through hollow output shaft surrounding, drilling rod passes and is locked by turning cylinder hydraulic pressure free-sliding spline pawl card clamp at output shaft center, large footpath, by concrete charging aperture pipe, interior bull stick deceleration device, turning cylinder hydraulic tube assembly pressure device, gravity sensor is assembled into interior bull stick power power set so that interior bull stick reduction unit output shaft axial line is from bottom to top superimposed, by concrete charging aperture standpipe and drilling rod rotate that separator is connected pipe end and with the spline housing mouthpiece of spline locked groove by interior bull stick, turning cylinder hydraulic tube group, counter-force conductive bar interface group is dressed up together with the collaborative seize power power set of the spline housing combination interface jointed rod unified with drilling rod interface and is worked, middle paxilla footpath power-driven system is from bottom to top assembled into superimposed power set by many dynamic retardings device, concrete charging aperture standpipe, interior bull stick deceleration device, turning cylinder hydraulic tube assembly pressure device, gravity sensor along rotating shaft core line, by output shaft flange, connect swivel nut and be connected being connected of spline housing and unit head speed reducer output shaft with output shaft drilling rod, drilling rod, interior bull stick, hydraulic tube group, counter-force conductive bar interface group are dressed up to the spline housing combination interface unified with drilling rod interface.
10. the piling method of rotary enlarging reducing cone spiral tray concrete filling pile described in claim 1, it is characterized in that: by water spray, pierce by counter-force feeler inspection and accurately arrive at bearing stratum projected depth, and by screw lifting, expand spiral shell hole enlargement and synchronously stir pile of supercharging castinplace pile body concrete.
CN200810196611.2A 2008-09-27 2008-09-27 Rotary enlarging reducing cone spiral tray concrete filling pile and pile-forming apparatus and construction method Expired - Fee Related CN101413263B (en)

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