CN210530745U - Combined drilling bottom-expanding pile-planting system - Google Patents

Abstract

A combined drilling, bottom expanding and pile planting system comprises a power head assembly, a plurality of sections of drill rods with stirring blades and wall protecting rings, a spiral drill rod, a drilling tool with expanding cutting wings and cutting wings, a supporting frame, a drill rod fixing frame, a pile frame and a control system; the pile frame upright post is provided with two pairs of long guide rails which form a right angle, the power head assembly is arranged on the pair of long guide rails on the front surface of the power head assembly, a plurality of sections of drill rods, a spiral drill rod and a drilling tool are fixedly arranged below the power head assembly, and the long guide rail on the right side of the upright post is provided with a plurality of sections of drill rods; and a hoisting mechanism of the pile frame controls the drilling and lifting of the power head assembly and the drill rod, the spiral drill rod and the drilling tool which are connected with the power head assembly. The utility model discloses a stand gyration is guaranteed that accurate butt joint locking between the drilling rod of unit head assembly lower extreme dress admittedly realizes boring and digs, stirring and reaming operation, avoids the frequent butt joint of drilling rod and dismantles, improves the pore wall finishing degree, reduces operating personnel's working strength, improves and plants a operating efficiency, guarantees construction quality, reduces equipment purchasing cost.

Description

Combined drilling bottom-expanding pile-planting system

Technical Field

The utility model relates to a pile foundation construction machinery especially relates to a through boring to dig pore-forming, hole bottom enlarge and the combination formula drilling of the stratum is expanded at the bottom of the slip casting stirring with the precast pile and pile system is planted.

Background

In the continuous development process of urban construction, land resources are less and less, and house buildings are developed to high floors, so that the requirements of high floors and super high-rise buildings on the bearing capacity of pile foundations are higher and higher, the requirements on the buildings for preventing settlement and deformation are higher and higher, and the requirements of the buildings on uplift resistance and horizontal resistance are higher and higher. In order to meet the requirements of bearing capacity and deformation control, deep and long pile foundations are often adopted in the prior art, the performance requirements of pulling resistance, horizontal force resistance and the like cannot be met in hammering type or static pressure type pipe pile construction, and bored piles (embedded type) are basically adopted for foundations with dynamic load requirements of high-rise buildings, super high-rise buildings, roadbeds and the like, but the bored piles are high in manufacturing cost, unstable in quality, long in single-pile construction time, and polluted in environment due to slurry discharge, and do not accord with the environmental protection idea.

As the country greatly promotes the building industrialization and green construction, higher requirements are put forward for construction enterprises. Various newly-built commercial buildings, civil buildings and industrial plants gradually adopt fabricated buildings, so that the proportion of the fabricated buildings is improved. In recent years, a static drilling root-planting pile construction technology integrating drilling, deep stirring and prefabrication of various pile foundation technologies is rapidly popularized and developed, the construction technology has the characteristics of industrial prefabrication, energy conservation, environmental protection and material conservation and consumption reduction of pile materials, can replace a drilling filling pile under certain conditions, has the function of a non-soil-squeezing pile penetrating through various rock-soil layers and having large diameter and high bearing capacity, greatly reduces the slurry discharge amount, saves water and land, and protects the environment; the single-pile construction efficiency is improved by 4-5 times; social resources are saved; the bearing capacity of the single-side concrete is improved by 2-3 times, raw materials are saved, and resources are fully utilized. The static drilling rooted pile construction technology leads a new direction of green construction in the field of pile foundation construction, and effectively solves the environmental damage influence caused by pile driving noise, pile driving hammer air pollution and pile driving and soil squeezing caused by precast pile construction; on the other hand, the construction process of the cast-in-situ bored pile with large bearing capacity in urban areas can be replaced, and the quality defects of hole shrinkage, pile body mud inclusion, excessive hole bottom sediment and the like caused by hole congestion of the cast-in-situ bored pile are overcome; the pile materials are prefabricated in factories, the quality is guaranteed, and the waste of field materials is avoided; meanwhile, the method has good adaptability to rock-soil layers, has small influence on soil squeezing effect, greatly reduces the discharge amount of slurry, solves the problem of difficult slurry discharge land in urban areas, and saves land. The application development of the precast pile is facilitated, the development of the green pile foundation technology is complied with, and the application field of the precast pile is further expanded. Therefore, the static drilling root-planting pile technology has obvious benefits from the technical and economic aspects, accords with the sustainable development concept, and has good popularization prospect.

In the prior art, a single-shaft stirring drilling machine is generally arranged on a pile frame upright post, a drill rod and the drilling tool cut soil downwards to drill holes, and water or bentonite mixed liquid is injected while drilling the holes, and meanwhile, an arc-shaped wall protection block on the drill rod can correct and protect the wall of a pre-drilled hole body until the drill rod reaches the position near a bearing stratum required by design. In the whole process of drilling and forming the hole, the length of the drill rod and the drill bit can not be connected and arranged on the upright post of the pile frame at one time due to the height of the upright post of the matched pile frame, the structural type of the upright post guide rail and the bearing capacity of the pile frame, therefore, as the drilling depth increases, only by the operator continuously increasing the length of the drill rod, the drill rod jointing generally needs the steps of disassembling a drill rod joint pin shaft, lifting a power head, separating an upper drill rod (drilling tool) from a lower drill rod (drilling tool), flushing male and female joints of the upper drill rod (drilling tool) and the lower drill rod (drilling tool) by a high-pressure water gun, hoisting the jointed drill rod by a crane, aligning and locking the female joint at the lower end of the jointed drill rod and the male joint of the buried drill rod, descending the power head, aligning and locking the female joint at the lower end of a square drill rod below the power head and the upper end of the hoisted drill rod, and the like, and the drilling rod jointing process needs more construction; after the drilling depth required by the design is reached, cement slurry is injected into the pile end through the drill rod and the drill bit inner cavity pipeline, and the pile end cement slurry is repeatedly stirred up and down to keep uniform; when all drill rods and drill bits are lifted out of the earth, an operator can only operate the winch to lift the power head to sequentially lift each drill rod, pull out the pin shafts at the male and female joints of the upper and lower drill rods (drilling tools) and pull out the adjacent two drill rods or drilling tools after the drilling tools are separated. And repeating the steps to extract all drill rods or drill tools. Therefore, operators spend much time on connecting and disconnecting the drill rods in the two stages of drilling down and pulling out, and the pile planting construction efficiency is seriously influenced; in addition, because the grouting and stirring construction is carried out in the pre-drilling hole, certain time and progress requirements are met, the pile planting quality of the precast pile can be influenced by excessive frequent drilling rod and drilling tool connection procedures, and the technical performance of the implanted pile is further reduced. Therefore, it is necessary to develop a pile-planting construction device which can effectively improve the pile-planting efficiency and reduce the steps of additionally connecting and disassembling drill rods and drill rods.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes the shortcoming that current pile planting machine exists, the power head assembly that provides on the stand guide rail of installation pile frame drills, the reaming, the combination formula drilling club-footed pile planting system of construction is implanted to slip casting and precast pile, the accurate butt joint between the drilling rod of adorning admittedly to gyration completion power head assembly lower extreme through the pile frame stand improves the pore wall finishing degree, avoid the frequent butt joint and the dismantlement of drilling rod, reduce operating personnel's working strength, effectively improve drilling and plant a work efficiency, further guarantee to plant a construction quality, reduce equipment purchasing cost by a wide margin.

In order to achieve the above purpose, the utility model adopts the following solution:

the utility model provides a modular drilling club-footed pile planting system, includes the unit head assembly, multisection have stirring vane and dado circle the drilling rod, have helical blade's auger stem, have the drilling tool that enlarges cutting wing and cutting wing, supporting rack, drilling rod mount, pile frame and including stand rotary system, drilling machine operating system, pile frame operating system and slip casting operating system's operating system, wherein:

the power head assembly comprises a lifting pulley, a frame with a back guide block, a vertical motor and a reduction gearbox, a hydraulic pipeline and a grouting pipeline, wherein the reduction gearbox is provided with a hollow output shaft;

the retaining ring comprises a retaining ring, a first pair of plug boards, a second pair of plug boards, a first pair of sockets and a second pair of sockets;

the pile frame includes at least two sets of hoisting mechanisms, one upright post comprising several sections of upright post cylinders with the first pair of guide rails and the second pair of opposite guide rails, one hinged upright post cylinder with the first pair of guide pipes, the second pair of guide pipes, the first back support and the second back support, and one short upright post cylinder connected together, and one top pulley frame、A first diagonal strut and a second diagonal strut;

the bearing frame comprises a frame body with a guide through hole, a pair of guide plates and a bush, wherein the pair of guide plates and the bush are positioned at the rear part of the frame body;

the drill rod fixing frame comprises a fixing frame seat with a back guide groove and a frame seat semicircular groove and a cover plate with a cover plate semicircular groove;

the method is characterized in that:

the upright post of the pile frame is positioned right ahead of the chassis of the host machine, the short upright post cylinder with a front short guide rail at the lowest end of the pile frame is arranged in the center of a fork foot at the front end of the chassis of the host machine, and a plurality of sections of upright post cylinders, a hinged upright post cylinder and one or two sections of upright post cylinders are fixedly arranged above the short upright post cylinder in sequence; the first diagonal brace and the second diagonal brace are symmetrically arranged at the left side and the right side of the upright post, one end of each diagonal brace is hinged to the first back support and the second back support of the hinged upright post cylinder of the upright post respectively, and the other end of each diagonal brace is hinged to the supports at the left rear part and the right rear part of the host chassis respectively; the first pair of guide rails and the second pair of guide rails of the upright post cylinder and the first pair of guide pipes and the second pair of guide pipes of the hinged upright post cylinder are respectively arranged on the front side and the right side of the upright post cylinder in a mode of forming an included angle of 90 degrees with each other along the vertical direction of the upright post cylinder and the hinged upright post cylinder, a pair of front long guide rails and a pair of side long guide rails are formed on the front side and the right side of the upright post after being connected with each other, and one pair of front long guide rails extends to the front short guide rails of the short upright; the top pulley yoke is fixedly arranged at the top end of the upright post, and the front side and the right side of the front end part of the top pulley yoke are respectively provided with a first pulley block and a second pulley block which are arranged in a way of forming an included angle of 90 degrees with each other;

the power head assembly is arranged on a pair of front long guide rails of the upright post of the pile frame through a back guide block on a rack of the power head assembly; a steel wire rope led out from a group of hoisting mechanisms of the host chassis passes through a first pulley block in front of a pulley yoke at the top of the pile frame and then bypasses a hoisting pulley of the power head assembly, so that the power head assembly can respectively carry out hoisting and descending motions on the front long guide rail;

a hollow output shaft of a reduction gearbox of the power head assembly is installed in a mode of vertically penetrating through a box body of the reduction gearbox, a rotary joint is fixedly installed at the upper end of the hollow output shaft and then is respectively connected with a hydraulic pipeline and a grouting pipeline, and a connecting disc is installed at the lower end of the hollow output shaft and then is fixedly installed with a plurality of sections of drill rods, spiral drill rods and drilling tools;

the drill rod fixing frame is arranged on a pair of long side guide rails of the stand column through a back guide groove of the fixing frame seat and then fixed on a stand column barrel through screws, a steel wire rope led out from the other group of hoisting mechanisms of the host chassis passes through a second pulley block on the right side of a pulley frame at the top of the pile frame and then hoists a plurality of sections of drill rods, the drill rod body of the drill rod is arranged in a semicircular groove of the frame seat, and a cover plate of the fixing frame seat is installed through the screws, so that the plurality of sections of drill rods are installed and fixed in a hole formed by butt joint of the semicircular;

the wall guard ring of the drill rod is arranged above the outer wall of the drill rod body, and the stirring blade is arranged on the outer wall of the drill rod body in a mode of being positioned below the wall guard ring; the first pair of sockets and the second pair of sockets are symmetrically arranged on the inner wall of the retaining wall ring, the first pair of inserting plates and the second pair of inserting plates are symmetrically arranged on the outer wall of the drilling rod body of the drilling rod, and the retaining wall ring is locked on the first pair of sockets and the second pair of sockets through the first pair of inserting plates and the second pair of inserting plates by using pin shafts;

the guide through hole of the support frame is positioned at the front end of the frame body, a bushing is arranged in the guide through hole, and the pair of guide plates are fixedly arranged at the rear end of the frame body; the supporting frame is fixedly arranged on a front short guide rail of a short upright post cylinder at the lowest end of an upright post of the pile frame through a guide plate of the supporting frame; when the power head assembly moves downwards, a plurality of sections of drill rods, spiral drill rods and drilling tools connected to the lower end of the power head assembly penetrate through the inner wall of a bushing arranged in a guide through hole at the front end of the supporting frame to drill and cut the stratum;

the drilling tool realizes the expansion and the furling of the expanded cutting wings under the action of a hydraulic expansion oil cylinder in an inner cavity of the drilling tool, and performs hole expansion operation at the bottom of a hole pre-drilled with a hole;

the vertical motor of each group of power head assembly adopts a starting control mode of an 8-pole variable frequency motor and an external frequency converter, so that the regulation control of the output rotating speed and the output torque of the hollow output shaft is realized, and the stepless regulation and control of the rotating speed and the torque of a plurality of sections of drill rods, spiral drill rods and drilling tools are realized;

the column rotation system of the control system controls the rotation of a plurality of sections of column barrels above a short column barrel at the lowest end in a column of the pile frame and below a hinged column barrel, the drilling machine control system of the control system controls the operation of two groups of power head assemblies, a plurality of sections of drill rods, a spiral drill rod and a drilling tool, the pile frame control system controls the operation/movement of at least two groups of hoisting mechanisms and a host chassis of the pile frame, and the grouting control system controls the operation of a background slurry preparation and supply system; the operation system stores and prints out operation parameters, technical parameters and construction parameters in drilling and pile planting construction in time.

The utility model discloses can, the dado circle of drilling rod sets up two, or three along its axial direction.

The utility model discloses can also be, the fit clearance between the bush internal diameter that sets up in the guide through hole of the biggest rotating diameter of the stirring vane of multisection drilling rod, dado circle and the cutting wing of drilling tool and supporting rack is 8.00 ~ 12.00 mm.

The utility model can also be that the bush of the supporting frame is composed of two symmetrical semi-circular or three symmetrical arc inner bushes.

The utility model discloses can also be, the drilling rod mount sets up two, perhaps three along the vertical direction of the stand of pile frame.

Drawings

Fig. 1 is a schematic structural view of the combined drilling and bottom-expanding pile-planting system of the present invention;

FIG. 2 is an expanded schematic view of the powerhead assembly, drill string, auger string and drill section of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is a bottom view partially in accordance with FIG. 1;

FIG. 6 is a schematic view of the mechanism of the drill rod in the combined drilling, bottom-expanding and pile-planting system of the present invention;

fig. 7 is a sectional view taken along line B-B in fig. 6.

Detailed Description

As shown in fig. 1-7, a combined drilling, bottom-expanding and pile-planting system comprises a power head assembly 1, a plurality of sections of drill rods 3 with a wall protecting ring 32 of a stirring blade 31, a spiral drill rod 7 with a spiral blade 71, a drill 4 with an expanding cutting wing 41 and a cutting wing 42, a supporting frame 6, a drill rod fixing frame 8, a pile frame 5 and an operating system comprising a column rotating system, a drill operating system, a pile frame operating system and a grouting operating system, wherein the power head assembly 1 comprises a lifting pulley 11, a frame 12 with a back guide block 121, a vertical motor and a reduction gearbox 122, a hydraulic pipeline and a grouting pipeline, and the reduction gearbox 122 is provided with a hollow output shaft 124; retaining ring 32 includes retainer 321, first pair of insert plates 322, second pair of insert plates 322 ', first pair of receptacles 323, and second pair of receptacles 323'; the pile frame 5 comprises a main machine chassis 51 at least provided with two groups of hoisting mechanisms, a vertical column barrel 521 formed by butting a plurality of sections of a first pair of guide rails 522 and a second pair of guide rails 522 ', a hinged vertical column barrel 523 provided with a first pair of guide pipes 524, a second pair of guide pipes 524', a first back support 525 and a second back support 525 ', and a vertical column 52 formed by butting a short vertical column barrel 527, a top pulley frame 53, a first diagonal brace 54 and a second diagonal brace 54'; the support frame 6 includes a frame body 62 having a guide through hole 621, a pair of guide plates 61 and a bush 63 at the rear of the frame body; the drill rod holder 8 comprises a holder seat 81 with a back guide groove 811 and a seat half-slot 812, a cover plate 82 with a seat 821, wherein:

the upright post 52 of the pile frame 5 is positioned right ahead of the host chassis 51, the short upright post cylinder 527 with a pair of front short guide rails 5272 at the lowest end is arranged in the center of the front protruding part fork foot 511 of the host chassis 51, and a plurality of sections of upright post cylinders 521, a hinged upright post cylinder 523 and one section or two sections of upright post cylinders 521 are fixedly arranged above the short upright post cylinder 527 in sequence; the first diagonal brace 54 and the second diagonal brace 54 'are symmetrically arranged at the left side and the right side of the upright 52, one end of each diagonal brace is respectively hinged on a first back support 525 and a second back support 525' of a hinged upright cylinder body 523 of the upright 52, and the other end of each diagonal brace is respectively hinged on supports at the left rear part and the right rear part of the host chassis 51; the first pair of guide rails 522 and the second pair of guide rails 522 'of the upright cylinder 521 and the first pair of guide pipes 524 and the second pair of guide pipes 524' of the hinged upright cylinder 523 are respectively arranged on the front side and the right side of the upright cylinder and in a manner of forming an included angle of 90 degrees with each other along the vertical direction of the upright cylinder and the hinged upright cylinder, and after being connected with each other, a pair of front long guide rails and a pair of side long guide rails are respectively formed on the front side and the right side of the upright 52, wherein the pair of front long guide rails extend to the front short guide rail 5272 of the short upright cylinder 527; the top pulley yoke 53 is fixedly mounted on the upper end of a section of the column barrel 521 at the top end of the column 52, and the front end of the top pulley yoke is provided with a first pulley block 531 and a second pulley block 531' which are arranged in a manner of forming an included angle of 90 degrees with each other.

The power head assembly 1 is respectively arranged on a pair of front long guide rails of the upright post 52 of the pile frame 5 through a back guide block 121 on the frame 12 of the power head assembly; a steel wire rope led out from a group of hoisting mechanisms of the host chassis 51 passes through a first pulley block 531 in front of a top pulley frame 53 of the pile frame 5 and then bypasses a hoisting pulley 11 of the power head assembly, so that the power head assembly can respectively carry out hoisting and descending motions on the front long guide rail; a hollow output shaft 124 of a reduction gearbox 122 of the power head assembly 1 is installed in a way of vertically penetrating through a box body of the reduction gearbox 122, a rotary joint is fixedly installed at the upper end of the hollow output shaft and then is respectively connected with a hydraulic pipeline and a grouting pipeline, and a connecting disc is installed at the lower end of the hollow output shaft and then is sequentially and fixedly installed with a plurality of sections of drill rods 3, a spiral drill rod 7 and a drilling tool 4; the vertical motor of the power head assembly 1 adopts a starting mode of an 8-pole variable frequency motor and an external frequency converter to realize the regulation and control of the output rotating speed and the output torque of the hollow output shaft 124. According to the starting control mode, the 8-pole variable frequency motor is adopted, so that the stability and stability of the motor at a high speed or at a low speed for a long time are ensured, effective heat dissipation is achieved, and the drilling and digging operation requirements of low speed and large torque are met. The external frequency converter can realize the soft start of the motor, avoid the occurrence of heavy current when the motor is started, realize the stepless adjustment control of high-precision rotating speed and torque in a larger range of the motor, adapt to the changes of different stratum structures and complex stratums, effectively ensure the smooth drilling, digging, stirring and pile planting construction process, and further improve the drilling and digging operation efficiency.

The drill rod fixing frame 8 is arranged on a pair of long side guide rails of the upright column 52 through a back guide groove 811 of the fixing frame seat 81 and then fixed on the upright column barrel 521 through screws, a steel wire rope led out from the other group of hoisting mechanisms of the host machine chassis 51 passes through a second pulley block 531' on the right side of the pulley frame 53 on the top of the pile frame 5 to hoist the multiple sections of the drill rods 3, the drill rod bodies 30 of the drill rods 3 are arranged in the frame seat semicircular groove 812, and the cover plate 82 of the fixing frame seat 81 is installed through screws, so that the multiple sections of the drill rods 3 are installed and fixed in holes formed by butting the frame seat semicircular groove 812 and the cover plate semicircular.

The wall guard 32 of the drill rod 3 is arranged above the outer wall of the drill rod body 30, and the stirring blade 31 is arranged on the outer wall of the drill rod body 30 in a manner of being positioned below the wall guard 32; two or three retaining rings 32 are arranged along the axial direction of the drill rod 3; the first and second pairs of socket 323, 323 'are symmetrically arranged on the inner wall of the retaining ring 32, the first and second pairs of insert plates 322, 322' are symmetrically arranged on the outer wall of the drill rod body 30 of the drill rod 3, and the retaining ring 32 is locked on the first and second pairs of socket 323, 323 'by the first and second pairs of insert plates 322, 322' with a pin. Therefore, in the downward drilling and lifting stirring processes of the power head assembly, the drill rod, the stirring drill rod and the drilling tool, the inner wall of the hole body can be extruded and protected by the wall protection ring, so that the smooth and compact inner wall of the hole body is formed, and the pile planting construction quality is convenient to guarantee. If the excircle abrasion of the retaining wall ring exceeds the specified limit size, the retaining wall ring can be conveniently detached and replaced through the pin shaft, the maintenance cost of a user is effectively reduced, and the construction efficiency of the drilling machine is improved.

The guide through hole 621 of the support frame 6 is positioned at the front end of the frame body 62, and the pair of guide plates 64 at the rear end thereof is fixedly arranged at the rear end of the frame body 62; a bush 63 is arranged in the guide through hole 621, and the bush 99 consists of two symmetrical semicircular inner bushes or three symmetrical arc inner bushes; when the abrasion of the inner hole of the bushing exceeds the specified limit size in the using process, each arc-shaped inner bushing can be conveniently disassembled and replaced by a new arc-shaped inner bushing, so that the construction cost is effectively reduced; the supporting frame 6 is fixedly arranged on the front short guide rail 5272 of the short upright post cylinder 527 at the lowest end of the upright post 52 of the pile frame 5 through the guide plate 61; the multiple sections of drill rods 3, the spiral drill rod 7 and the drilling tool connected to the lower end of the power head assembly 1 penetrate through the inner wall of the bushing 63 arranged in the front end guide through hole 621 of the supporting frame 56 to drill and cut the stratum when the power head assembly 1 descends; can obtain effective direction and support, guarantee its brill dig, slip casting and stirring stability, improve the perpendicular precision of pore-forming.

The drilling tool 4 realizes the expansion and the furling of the expanding cutting wings 41 under the action of a hydraulic expanding oil cylinder in the inner cavity of the drilling tool, and performs reaming operation at the hole bottom of the pre-drilled hole. The fit clearance between the maximum rotating diameter of the stirring blade 31, the wall guard ring 32 and the cutting wing 42 of the drilling tool 4 of the multi-section drill rod 3 and the inner diameter of the bushing 63 arranged in the guide through hole 621 of the supporting frame 6 is 8.00-12.00 mm. Therefore, when the power head assembly and the multiple sections of drill rods, the spiral drill rod and the drilling tool of the power head assembly drill downwards, drilling, grouting and stirring stability of the power head assembly are ensured due to effective guiding and supporting of the supporting frame 6, and construction quality of drilling and pile planting is improved.

The column slewing system of the control system controls the slewing of a plurality of sections of column barrels 521 above a short column barrel 527 at the lowest end in a column 52 of the pile frame 5 and below a hinged column barrel 523, the drilling machine control system of the control system controls the operation of a power head assembly 1, a plurality of sections of drill rods 3, a spiral drill rod 7 and a drilling tool 4, the pile frame control system controls the operation/movement of at least two groups of hoisting mechanisms and a host chassis 51 of the pile frame 5, and the grouting control system controls the operation of a background slurry preparation and supply system; the operation system displays and controls operation parameters, technical parameters and construction parameters in the drilling and pile planting construction, and realizes storage and printout of related construction parameters. The control system adopts an intelligent control technology to display the actual construction data of the drilling machine and the running conditions of the hydraulic system and the grouting system through the control console, can record and store the data of the drilling, reaming and grouting processes, prints data tables and graphic curves, and can provide the analysis basis for the whole drilling and pile planting construction process for users. The display parameters of the manipulation system include: the rotation speed, the working temperature and the rotation direction of a vertical motor in a power head assembly, the rotation speed, the steering direction and the torque of a drilling tool/a drilling rod, the opening size of a cutting wing on the drilling tool is enlarged, the pressure and the flow of an oil cylinder are expanded, the drilling (stirring) depth of the drilling machine, the working pressure, the flow and the oil temperature of hydraulic oil of a pile frame hydraulic system, the inclination of the pile frame and the drawing force of the pile frame, the pressure of a grouting pump of a slurry supply system, the instantaneous cement slurry amount, the total slurry amount, the actual total slurry amount and the total water injection amount, the walking speed of a host chassis, the pile mark formed after pile planting and.

The utility model discloses modular drilling expands end and plants stake system is through installing the drill rod that unit head assembly and the multisection of adorning admittedly have stirring vane and dado circle on front long guide rail and the long guide rail of a pair of side that the front side and the right side of pile frame stand set up with each other 90 contained angles, the auger stem that has helical blade and area enlarge the wing respectively, and the multisection has stirring vane's drill rod, confirm the multisection drill rod of adorning admittedly at unit head assembly and its lower extreme, behind the total length of auger stem and drilling tool, confirm the multisection drill rod total length of installation on the long guide rail of a pair of sides of stand again, finally satisfy the design depth that the stake was implanted to the construction requirement. By operating an electrical system, firstly, a power head assembly and a plurality of sections of drill rods with stirring blades, spiral drill rods with spiral blades and a drilling tool with an expansion wing fixedly arranged on a connecting disc at the lower end of the power head assembly are started, a hoisting mechanism on a chassis of a pile frame host machine is operated to discharge a steel wire rope, the power head assembly enables the drill rods, the spiral drill rods and the drilling tool to drill downwards by means of dead weight, after the drill rods, the spiral drill rods and the drilling tool all drill into the stratum, a male joint of the last drill rod connected with the connecting disc at the lower end of the power head assembly is disassembled, and the steel wire rope of the hoisting mechanism enables the power head assembly to be lifted to a height position higher than a hinged upright column barrel along. And loosening the hinged upright post cylinder and the short upright post cylinder to respectively lock the pin shafts with the upright post cylinder, operating an upright post rotating system of the pile frame, rotating the multi-upright post cylinder between the lower part of the hinged upright post cylinder and the upper part of the short upright post cylinder by 90 degrees leftwards, and fixing the hinged upright post cylinder and the short upright post cylinder again by using screws, thereby forming a pair of front long guide rails at the front side of the upright post. And (3) putting down a steel wire rope of the hoisting mechanism to enable the power head assembly to descend, fixedly mounting a lower end connecting disc of the power head assembly and a male joint of the uppermost drill rod in a plurality of drill rods, and loosening and dismantling the drill rod fixing frame. And continuously putting down a steel wire rope of the hoisting mechanism to enable the power head assembly to move downwards, aligning the female joint of the tail end drill rod in the plurality of drill rods with the male joint of the drill rod exposed out of the stratum, and inserting a pin shaft to lock the drill rod joint after the butt joint is in place. And operating the hoisting mechanism to release the steel wire rope, enabling the power head assembly to downwards drill a plurality of sections of drill rods, spiral drill rods and drilling tools by means of dead weight, completing pre-drilling and drilling after the drilling strata of all the drill rods, the spiral drill rods and the drilling tools reach the designed depth, operating the hydraulic system and the extension oil cylinders arranged in the inner cavities of the drilling tools, opening the extension cutting wings of the drilling tools to perform hole expanding operation on the hole bottoms drilled with holes, and collecting the extension cutting wings after the required hole expanding size is reached. Operating the hoisting mechanism to retract the steel wire rope lifting power head assembly, the multiple sections of drill rods, the spiral drill rod and the drilling tool, operating a slurry preparation and supply system equipped at the background, injecting solidified cement slurry into inner cavities of the hollow output shaft, the multiple sections of drill rods, the spiral drill rod and the drilling tool through a slurry injection pipeline, and finally performing rotary slurry injection on formed holes through a slurry injection hole arranged at the lower end part of the drilling tool; and continuously operating a hoisting mechanism of the pile frame to retract the steel wire rope, lifting the power head assembly, pulling out a plurality of sections of drill rods, spiral drill rods and drilling tools fixedly arranged on a connecting disc at the lower end of the power head assembly for two times to the outside of the pile planting hole body for completing grouting, and finally detaching all the drill rods, spiral drill rods and drilling tools. A pile feeding cap is arranged at the lower end of the power head assembly, a precast pile to be implanted is hung in a pile planting hole formed by drilling and digging by using a crane, and the precast pile is sunk into the pile planting hole by means of dead weight; and operating the hoisting mechanism to discharge the steel wire rope, enabling the pile feeding cap to be sleeved on the pile head of the precast pile after the pile feeding cap moves downwards along with the power head assembly, continuously operating the power head assembly to move downwards, pressing the precast pile into a drilled hole by virtue of the self weight of the precast pile and the weight of the power head assembly to finally reach the designed elevation, and enabling the precast pile, the pile end and the soil body around the pile to form an integrated pile planting body foundation after the pile end and the solidified cement slurry around the pile are hardened. In addition, the perpendicularity deviation value of the drilling and digging hole body monitored by the inclination sensor arranged on the side face of the frame of the power head assembly at any time is transmitted to the control panel of the control system, so that the deviation correction is facilitated for operators, and the perpendicularity of the drilling and digging hole body is ensured to meet the design requirement.

The combined drilling, bottom expanding and pile planting system of the utility model ensures the accurate butt joint and locking between the drill rods fixedly arranged at the lower end of the power head assembly through the rotation of the upright post, realizes the drilling, stirring and hole expanding operation, improves the hole wall finishing degree, after the rotation of the upright post of the pile frame, a plurality of sections of drill rods on the right side of the multi-section upright post are arranged and rotate to the lower part of a power head assembly on a pair of front long guide rails on the front side of the upright post, and is precisely butted and locked with a connecting disc at the lower end thereof, and then is precisely butted and locked with a male joint exposed out of the ground on a drill rod drilled into the stratum, so that the construction requirement of the drilling depth can be met only by additionally connecting the drill rod once in the drilling process of the drilling machine, the frequent butt joint between the drill rods and between the drill rod and the drilling tool is effectively avoided, and all drill rods and drilling tools are lifted to the ground after the drilling and digging operation is finished, and only once disassembly is needed, so that the operation intensity of operators is greatly reduced, and the operation efficiency of drilling and pile planting is greatly improved. In addition, on one hand, the inner diameter of the bushing on the supporting frame is changed to ensure good guiding when the precast pile is implanted into a hole; on the other hand, through the inclined sensor installed on the side face of the power head assembly, the verticality of the implanted precast pile entering the pre-drilled hole can be effectively guaranteed to meet the design requirement, and the depth dimension of the implanted pile in the pre-drilled hole is accurately planted and positioned to meet the design elevation requirement, so that the construction quality of the drilled pile is further guaranteed, and the equipment purchase cost of a construction unit is reduced.

Claims (5)

1. A combined drilling, bottom-expanding and pile-planting system comprises a power head assembly (1), a plurality of sections of drill rods (3) with stirring blades (31) and retaining wall rings (32), spiral drill rods (7) with spiral blades (71), drilling tools (4) with expanding cutting wings (41) and cutting wings (42), a support frame (6), a drill rod fixing frame (8), a pile frame (5) and an operating system comprising a stand column rotating system, a drilling machine operating system, a pile frame operating system and a grouting operating system, wherein:

the power head assembly (1) comprises a lifting pulley (11), a frame (12) with a back guide block (121), a vertical motor and a reduction gearbox (122), a hydraulic pipeline and a grouting pipeline, wherein the reduction gearbox (122) is provided with a hollow output shaft (124);

the retaining ring (32) comprises a retaining ring (321), a first pair of insertion plates (322), a second pair of insertion plates (322 '), a first pair of sockets (323) and a second pair of sockets (323');

the pile frame (5) comprises a main machine chassis (51) at least provided with two groups of hoisting mechanisms, a column (52) formed by butting a plurality of sections of column cylinders (521) provided with a first pair of guide rails (522) and a second pair of guide rails (522 '), a hinged column cylinder (523) with the back surfaces of a first pair of guide pipes (524), a second pair of guide pipes (524 '), a first back support (525) and a second back support (525 '), a short column cylinder (527) and a top pulley frame (53)、A first diagonal (54) and a second diagonal (54');

the support frame (6) comprises a frame body (62) with a guide through hole (621), a pair of guide plates (61) positioned at the rear part of the frame body and a bush (63);

the drill rod fixing frame (8) comprises a fixing frame seat (81) with a back guide groove (811) and a frame seat semi-circular groove (812), and a cover plate (82) with a cover plate semi-circular groove (821);

the method is characterized in that:

the upright post (52) of the pile frame (5) is positioned right ahead of the host chassis (51), the lowest end of the upright post is provided with a short upright post cylinder (527) with a pair of front short guide rails (5272) and arranged in the center of a fork foot (511) at the front end of the host chassis (51), and a plurality of sections of upright post cylinders (521), a hinged upright post cylinder (523) and one section or two sections of upright post cylinders (521) are fixedly arranged above the short upright post cylinder (527) in sequence; the first inclined strut (54) and the second inclined strut (54 ') are symmetrically arranged at the left side and the right side of the upright (52), one ends of the first inclined strut and the second inclined strut are respectively hinged on a first back support (525) and a second back support (525') of a hinged upright barrel (523) of the upright (52), and the other ends of the first inclined strut and the second inclined strut are respectively hinged on supports at the left rear part and the right rear part of the host chassis (51); the first pair of guide rails (522) and the second pair of guide rails (522 ') of the upright cylinder (521), and the first pair of guide pipes (524) and the second pair of guide pipes (524') of the hinged upright cylinder (523) are respectively arranged on the front side and the right side of the upright cylinder and the hinged upright cylinder in a mode of forming an included angle of 90 degrees with each other along the vertical direction of the upright cylinder and the hinged upright cylinder, and after being connected with each other, a pair of front long guide rails and a pair of side long guide rails are respectively formed on the front side and the right side of the upright (52), wherein one pair of front long guide rails extend to the front short guide rails (5272) of the short upright cylinder; the top pulley yoke (53) is fixedly arranged at the top end of the upright post (52), and the front end and the right side of the top pulley yoke are respectively provided with a first pulley block (531) and a second pulley block (531') which are arranged in a way of forming an included angle of 90 degrees with each other;

the power head assembly (1) is arranged on a pair of front long guide rails of the upright post (52) of the pile frame (5) through a back guide block (121) on the rack (12) of the power head assembly; a steel wire rope led out from a group of hoisting mechanisms of the host chassis (51) passes through a first pulley block (531) at the front end of a pulley yoke (53) at the top of the pile frame (5) and then bypasses a hoisting pulley (11) of the power head assembly, so that the power head assembly respectively carries out hoisting and descending motions on the front long guide rail;

a hollow output shaft (124) of a reduction box (122) of the power head assembly (1) is installed in a mode of vertically penetrating through a box body of the reduction box (122), a rotary joint is fixedly installed at the upper end of the hollow output shaft and then is respectively connected with a hydraulic pipeline and a grouting pipeline, and a connecting disc is installed at the lower end of the hollow output shaft and then is sequentially and fixedly installed with a plurality of sections of drill rods (3), a spiral drill rod (7) and a drilling tool (4);

the drill rod fixing frame (8) is arranged on a pair of long side guide rails of the upright post (52) through a back guide groove (811) of the fixing frame seat (81) and then fixed on an upright post cylinder (521) through screws, a steel wire rope led out from the other group of hoisting mechanisms of the host chassis (51) passes through a second pulley block (531') on the right side of a pulley frame (53) at the top of the pile frame (5) and then hoists a plurality of sections of drill rods (3), a drill rod body (30) of the drill rod (3) is arranged in a frame seat semicircular groove (812), and a cover plate (82) of the fixing frame seat (81) is installed through screws, so that the plurality of sections of drill rods (3) are installed and fixed in holes formed by butting of the frame seat semicircular groove (812) and a cover plate semicircular;

the wall protection ring (32) of the drill rod (3) is arranged above the outer wall of the drill rod body (30), and the stirring blade (31) is arranged on the outer wall of the drill rod body (30) in a mode of being positioned below the wall protection ring (32); the first pair of socket (323) and the second pair of socket (323 ') are symmetrically arranged on the inner wall of the retaining wall ring (32), the first pair of inserting plates (322) and the second pair of inserting plates (322') are symmetrically arranged on the outer wall of the drilling rod body (30) of the drilling rod (3), and the retaining wall ring (32) is locked on the first pair of socket (323) and the second pair of socket (323 ') through the first pair of inserting plates (322) and the second pair of inserting plates (322') by using pin shafts;

the guide through hole (621) of the support frame (6) is positioned at the front end of the frame body (62), and a bush (63) is installed in the guide through hole; the supporting frame (6) is fixedly arranged on a pair of front short guide rails (5272) of a short upright post cylinder (527) at the lowest end of the upright post (52) through a guide plate (61) of the supporting frame; the multi-section drill rod (3), the spiral drill rod (7) and the drilling tool which are connected with the lower end of the power head assembly (1) penetrate through the inner wall of a bushing (63) arranged in a front end guide through hole (621) of the supporting frame (56) to drill and cut the stratum when the power head assembly (1) descends;

the drilling tool (4) realizes the expansion and the furling of the expanding cutting wings (41) under the action of a hydraulic expanding oil cylinder in the inner cavity of the drilling tool, and performs hole expanding operation at the bottom of a hole which is pre-drilled with a hole;

the vertical motor of the power head assembly (1) adopts a starting control mode of an 8-pole variable frequency motor and an external frequency converter to realize the regulation control of the output rotating speed and the output torque of the hollow output shaft (124), so that the stepless regulation and control of the rotating speed and the torque of a plurality of sections of drill rods (3), a spiral drill rod (7) and a drilling tool (4) are realized;

the pile frame control system is used for controlling the operation/movement of at least two groups of hoisting mechanisms of the pile frame (5) and a host chassis (51), and the grouting control system is used for controlling the operation of a background grouting system; the operation system displays and controls operation parameters, technical parameters and construction parameters in the drilling and pile planting construction, and realizes storage and printout of related construction parameters.

2. A combined drilling and bottom-reaming pile system according to claim 1, characterized in that two, or three, retaining rings (32) of the drill rod (3) are provided in the axial direction thereof.

3. The combined drilling and bottom-expanding pile-planting system according to claim 1, wherein the fit clearance between the maximum rotating diameter of the stirring blades (31), the retaining ring (32) and the cutting wings (42) of the drilling tool (4) of the plurality of sections of the drill rods (3) and the inner diameter of the bushing (63) arranged in the guide through hole (621) of the support frame (6) is 8.00-12.00 mm.

4. A combined drilling and bottom-enlarging pile system according to claim 1, c h a r a c t e r i z e d in that the lining (63) of the support frame (6) consists of two symmetrical semi-circular inner linings.

5. The combined drilling and bottom-expanding pile-planting system according to claim 1, wherein two or three drill rod fixing frames (8) are arranged along the vertical direction of the upright column (52) of the pile frame (5).

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