CN117779753A - Full pile casing follow-up process for hole-forming cast-in-place pile of rotary pile digger - Google Patents

Abstract

The utility model relates to a bored concrete pile construction technical field specifically discloses a dig full pile casing follow-up technology of stake machine pore-forming bored concrete pile soon, and it includes confirm the stake point, builds loading platform, draws the hole, drilling, lower pile casing, repeatedly carries out drilling and lower pile casing, until the stake hole reaches the design degree of depth, down the steel reinforcement cage in the stake hole to pour the concrete, pull out the process of pile casing at last. The method has the effects of reducing the possibility of collapse of the inner wall of the pile hole and ground cracks around the pile hole, reducing the mud consumption and concrete loss and reducing the construction cost.

Description

Full pile casing follow-up process for hole-forming cast-in-place pile of rotary pile digger

Technical Field

The application relates to the technical field of cast-in-place pile construction, in particular to a full pile casing follow-up process of a bored pile of a rotary pile digger.

Background

The cast-in-place pile is a pile formed by forming pile holes in foundation soil by means of mechanical drilling, steel pipe soil squeezing, manual excavation and the like on an engineering site, placing a reinforcement cage therein and pouring concrete, and can be divided into a sinking pipe cast-in-place pile, a drilling cast-in-place pile, a hole digging cast-in-place pile and the like according to different hole forming methods. Pile type construction by rotary drilling rig is called rotary drilling bored concrete pile, and the engineering is called rotary drilling pile for short.

The traditional technological process of rotary drilling bored concrete pile comprises the following steps: and (3) lofting a construction site by using a total station, positioning a pile point, drilling at the pile point by using a rotary drilling rig, lowering a reinforcement cage after drilling, pouring concrete, and pulling out the pile casing after pouring the concrete.

For the related technology, when the soil in the construction area belongs to backfill, pile holes collapse and ground cracks are very easy to form in the construction process of the cast-in-place pile, the pile holes are required to be frequently maintained, reinforcement treatment is carried out near the pile holes, the phenomena of slurry flow and concrete consumption increase are easily caused by the collapse holes and the cracks, resource waste is caused, the construction cost is high, and meanwhile, construction safety hazards exist.

Disclosure of Invention

In order to solve the problems of higher construction cost and guarantee of construction safety, the application provides a full pile casing follow-up process of a bored pile of a rotary pile digger.

The application provides a dig full pile casing follow-up technology of stake machine pore-forming bored concrete pile soon adopts following technical scheme:

a full pile casing follow-up process of a rotary pile digger pore-forming filling pile comprises the following steps:

s1, removing barriers, leveling a site, lofting the site by using a total station, and determining pile points;

s2, building a bearing platform near the pile point, wherein the bearing platform is used for bearing a bottom section casing, a standard section casing, a drill bit and a casing connector;

s3, drilling the pile point to a depth of 1m by using a rotary drilling rig;

s4, after lifting the drill rod, disassembling the drill bit, installing the pile casing connector on the drill rod, connecting the pile casing connector with the bottom section pile casing, rotationally pressing the bottom section pile casing into the pile hole through the drill rod, and checking the perpendicularity of the bottom section pile casing by using a horizontal ruler when the lower end of the bottom section pile casing enters the depth of 0.5m of the pile hole;

s5, continuously drilling the pile hole for 3m by using a rotary drilling rig;

s6, after lifting the drill rod, disassembling the drill bit, installing the pile casing connector on the drill rod, connecting the pile casing connector with the standard joint pile casing, butting the standard joint pile casing with the bottom joint pile casing through the drill rod, locking the standard joint pile casing with the bottom joint pile casing, rotationally pressing the bottom joint pile casing down into the pile hole through the drill rod, and checking the perpendicularity of the bottom joint pile casing by using a horizontal rule when the lower end of the bottom joint pile casing enters the pile hole to a depth of 1.5 m;

s7, repeating the steps S4 and S5 until the design depth of the pile hole is reached;

s8, manufacturing, hanging and installing a reinforcement cage, connecting the guide pipes and lowering the guide pipes into the pile holes;

s9, pouring concrete into the pile holes;

and S10, after concrete pouring is completed, the standard section pile casing and the bottom section pile casing are pulled out.

By adopting the technical scheme, in the process of forming holes by the rotary drilling rig, a section of pile casing is lowered every time drilling of a section of pile hole is completed, so that the full pile casing follow-up pile hole is realized, the pile casing can protect and support the formed pile hole, the possibility of collapse and surrounding ground cracks of the pile hole is reduced, slurry loss and concrete consumption in the construction process are reduced, the construction cost is reduced, and the construction safety is ensured; through setting up loading platform, be convenient for dig rig change drill bit or protect a section of thick bamboo connector soon to be convenient for draw a section of thick bamboo and install.

Optionally, the bearing platform is provided with a first bearing platform, a second bearing platform and a third bearing platform, the first bearing platform is used for bearing the drill bit, the second bearing platform is used for bearing the pile casing connector, the third bearing platform is used for bearing the bottom section pile casing and a plurality of standard section pile casings, and the first bearing platform, the second bearing platform and the third bearing platform are all rotationally connected with the bearing platform.

Through adopting above-mentioned technical scheme, after the pile hole is accomplished once to the rotary drilling rig, turn to loading platform top, and make the drill bit place in first loading platform, the staff dismantles drill bit and drilling rod, the rotary drilling rig continues to rotate, make the drilling rod be located second loading platform top, and dock drilling rod and a pile casing connector, the staff carries out installation locking with drilling rod and a pile casing connector, the drilling rig continues to drive the drilling rod to remove to the third loading platform top, bottom festival pile casing or standard festival pile casing on the third loading platform are drawed through a pile casing connector, and rotationally push down to the pile hole, first loading platform, second loading platform and third loading platform are all rotated with loading platform and are connected, make the drill bit, a pile casing connector can adjust the cooperation angle, make a pile casing connector can rotate to the docking position, thereby be convenient for dock with the drilling rod.

Optionally, be equipped with a plurality of barrels that place on the third plummer, place a section of thick bamboo and be used for placing a section of thick bamboo or a standard section of thick bamboo that protects, place a section of thick bamboo and third plummer rotation connection, a plurality of place a section of thick bamboo and distribute along the axis of rotation week side of third plummer.

Through adopting above-mentioned technical scheme, when the drilling rig is dug soon draws end section pile casing or standard festival pile casing, rotate the third plummer, make the pile casing that waits to draw rotate to the butt joint position, place the section of thick bamboo and can rotate for can rotate the adjustment when pile casing and pile casing connector butt joint, be convenient for with pile casing and pile casing connector connect the locking.

Optionally, the first plummer, the second plummer, the stake hole and one of them a section of thick bamboo of placing can be located same circular arc orbit, and the arc center of this circular arc is on the rotation axis of rotary drilling rig.

Through adopting above-mentioned technical scheme, when the rotary drilling rig switches the position between drill bit, pile casing connector and pile casing, because the axle center of drill bit, pile casing connector and pile casing is on same circular arc, and the arc of this circular arc is on the rotation axis of rotary drilling rig for the rotary drilling rig need not to remove the adjustment position, can switch back and forth between a plurality of positions, thereby improves the efficiency of construction.

Optionally, the coaxial inner connecting ring that is equipped with in standard festival protective casing top, the coaxial outer connecting ring that is equipped with in top, the coaxial inner connecting ring that is equipped with in end festival protective casing top, the screw hole of same quantity and size has been seted up on inner connecting ring, the outer connecting ring, the external diameter size of inner connecting ring is the same with the internal diameter size of outer connecting ring, the inner connecting ring can peg graft with outer connecting ring.

Through adopting above-mentioned technical scheme, when protecting a section of thick bamboo and a section of thick bamboo or another standard section of thick bamboo and protecting a section of thick bamboo and being connected, peg graft outer go-between with the go-between, make the screw hole on outer go-between and the go-between align, reuse the bolt simultaneously with outer go-between and go-between be connected, realize the fixation of outer go-between and go-between to realize the concatenation locking of two section of thick bamboo, easy operation is swift.

Optionally, a plurality of locating blocks are arranged on the inner connecting ring, a plurality of first locating grooves are arranged on the outer connecting ring, the positions and the shapes of the first locating grooves and the locating blocks are matched, and one first locating groove corresponds to one locating block.

Through adopting above-mentioned technical scheme, when pegging graft outer go up outer go-between and inner go-between, peg graft locating piece and first constant head tank, the screw hole on outer go-between and the inner go-between aligns fast, the installation of being convenient for.

Optionally, the drill bit and the casing connector are both plugged with the drill rod and locked by a plug.

Through adopting above-mentioned technical scheme, installation drill bit or pile casing connector, rotary drilling rig rotate the drilling rod to drill bit or pile casing connector top, peg graft bull stick and drill bit or pile casing connector, staff's rethread bolt locks drill bit or pile casing connector, when need demolish drill bit or pile casing connector, pull out the bolt can, convenient operation is swift.

Optionally, the protective casing connector comprises a mounting part and a connecting cylinder, the drill rod is spliced with the mounting part, the connecting cylinder can be spliced with the internal connecting ring, a plurality of second positioning grooves are formed in the connecting cylinder, the second positioning grooves are matched with the positioning blocks in position and shape, one second positioning groove corresponds to one positioning block, and a plurality of threaded holes with the same quantity and size as the internal connecting ring are formed in the connecting cylinder.

Through adopting above-mentioned technical scheme, when pile casing connector and pile casing are connected, dig the rig soon and be connected through installation department and pile casing connector, dig the rig soon and order about to protect the casing connector and remove, make connecting portion and interior go-between, carry out threaded connection with connecting portion and the screw hole on the interior go-between through mounting such as bolt or threaded rod to realize protecting the casing connector and being connected of pile casing, be convenient for with protecting the more stable transfer of casing to pile hole top and insert in the pile hole.

Optionally, a locking component is arranged on the connecting cylinder and is used for locking the connecting cylinder and the inner connecting ring, and the locking component is driven by electric power.

Through adopting above-mentioned technical scheme, when being connected connecting cylinder and inner connecting ring, drive locking element through electric drive and lock connecting cylinder and inner connecting ring, can solve because of the high too high problem of protecting a section of thick bamboo, the staff is difficult to manually connect to can improve connection efficiency.

Optionally, the locking component includes locking bolt, driven gear, drive tooth post and driving motor, locking bolt and connecting cylinder threaded connection, locking bolt's one end can pass the connecting cylinder and with interior go-between threaded connection, the other end and driven gear coaxial fixed connection, the drive tooth post rotates with the connecting cylinder to be connected, driven gear and drive tooth post meshing, and with drive tooth post sliding connection, driving motor locates on the connecting cylinder, and is used for driving the drive tooth post to rotate.

Through adopting above-mentioned technical scheme, when locking assembly connects connecting cylinder and inner connecting ring, driving motor drives driving gear and rotates, makes driven gear drive locking bolt and rotates for locking bolt threaded connection gets into on the screw hole of inner connecting ring, electric drive can guarantee the efficiency and the accuracy of connection.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through setting up loading platform, first loading table, second loading table and third loading table, during bored concrete pile construction, dig the rig soon and make a round trip between pile hole, first loading table, second loading table and third loading table position and, make drilling, get and protect a section of thick bamboo, lower and protect a section of thick bamboo to go on in turn, realize the full pile protection of bored concrete pile follows up the construction, thus make the pore wall of the pile hole continuously receive the support of protecting a section of thick bamboo, reduce the possibility that the pore wall has subsidence or crackle, reduce the possibility that mud and concrete run off, thus reduce the construction cost;

2. through setting up outer connecting portion and interior connecting portion, and locating hole, first constant head tank, locating piece on locating outer connecting portion and interior connecting portion, splice the protective barrel, peg graft outer connecting portion and interior connecting portion, in-process of pegging graft, locating piece and first constant head tank can make outer connecting portion and interior connecting portion fix a position fast, be convenient for align the screw hole on outer connecting portion and interior connecting portion, in order to make things convenient for locking of outer connecting portion and interior connecting portion;

3. through setting up locking screw, driven gear, drive gear and driving motor, when being connected connecting portion and interior go-between, driving motor drives driving gear and rotates, makes driven gear drive locking screw rotate, makes the screw hole on locking screw and the interior go-between be connected, locks and the unblock all lean on electric power to the realization to interior go-between to the solution is difficult to the problem of locking connecting portion and interior go-between because of protecting a section of thick bamboo too high, the staff.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic overall structure of an embodiment of the present application;

FIG. 2 is a schematic illustration of the construction of a standard joint casing according to an embodiment of the present application;

FIG. 3 is a schematic structural view of a casing connector according to an embodiment of the present application;

FIG. 4 is a schematic illustration of a casing extraction state according to an embodiment of the present application;

FIG. 5 is a schematic illustration of a casing connector according to an embodiment of the present application in connection with a standard joint casing;

FIG. 6 is a schematic view of the condition of the lower casing according to an embodiment of the present application;

fig. 7 is a top view of an embodiment of the present application.

Reference numerals: 1. a rotary drilling rig; 11. a drill rod; 111. a connection part; 12. a drill bit; 2. a casing connector; 21. a mounting part; 211. a jack; 212. a plug pin; 22. a connecting cylinder; 221. a second positioning groove; 23. a locking assembly; 231. a locking bolt; 232. a driven gear; 233. driving the tooth column; 234. a driving motor; 235. a thread cylinder; 3. a standard section protection cylinder; 31. an inner connecting ring; 311. a threaded hole; 312. a positioning block; 32. an outer connecting ring; 321. a first positioning groove; 4. a load-bearing platform; 41. a first loading table; 411. a relief groove; 42. a second bearing table; 421. a guide table; 43. a third loading table; 431. placing a cylinder; 5. pile hole.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

The embodiment of the application discloses a follow-up process of a full pile casing of a bored pile formed by a rotary pile digger. Referring to fig. 1, the follow-up process of the full pile casing of the bored pile of the rotary pile digger comprises the following steps:

s1, removing barriers, leveling a site, lofting the site by using a total station, and determining pile points;

s2, constructing a bearing platform near the pile point, wherein the bearing platform 4 is used for bearing a bottom section casing, a standard section casing 3, a drill bit 12 and a casing connector 2;

s3, drilling the pile point to a depth of 1m by using the rotary drilling rig 1;

s4, after lifting the drill rod 11, detaching the drill bit 12, installing the pile casing connector 2 on the drill rod 11, connecting the pile casing connector 2 with the bottom section pile casing, rotationally pressing the bottom section pile casing into the pile hole 5 through the drill rod 11, and checking the perpendicularity of the bottom section pile casing by using a horizontal ruler when the lower end of the bottom section pile casing enters the depth of 0.5m of the pile hole 5;

s5, continuously drilling the pile hole 5 for 3m by using the rotary drilling rig 1;

s6, after lifting the drill rod 11, detaching the drill bit 12, installing the casing connector 2 on the drill rod 11, connecting the casing connector 2 with the standard section casing 3, butting the standard section casing 3 with the bottom section casing through the drill rod 11, locking the standard section casing 3 with the bottom section casing, rotationally pressing the bottom section casing into the pile hole 5 through the drill rod 11, and checking the perpendicularity of the bottom section casing by using a horizontal ruler when the lower end of the bottom section casing enters the depth 1.5m of the pile hole 5;

s7, repeating the steps S4 and S5 until the design depth of the pile hole 5 is reached;

s8, manufacturing, hanging and installing a reinforcement cage, connecting the guide pipes and lowering the guide pipes into the pile holes 5;

s9, pouring concrete into the pile hole 5;

and S10, after concrete pouring is completed, the standard joint casing 3 and the bottom joint casing are removed.

Referring to fig. 1, the bearing platform 4 is disposed at one side of the pile hole 5, where the bearing platform 4 is only a schematic diagram, and the bearing platform 4 can slide relative to the ground through rollers so as to move to the vicinity of another pile hole, and the bearing platform 4 is fixedly connected with the ground through an anchor rod when the cast-in-place pile is constructed. Be equipped with first plummer 41, second plummer 42 and third plummer 43 on the plummer 4, first plummer 41, second plummer 42 and third plummer 43 are circular mesa, first plummer 41 and second plummer 42 are connected with plummer 4 rotation, and for free rotation, third plummer 43 is connected with plummer 4 rotation, and need rotate through the driving piece, the driving piece can be motor or other similar mechanical drive structures such as gear, rack, etc., in this embodiment, the third plummer is driven through servo motor, servo motor locates the inside of plummer 4.

Before the bored concrete pile is constructed, after the pile point is determined, the drill rod 11 of the rotary drilling rig 1 is aligned with the pile point, preparation is made for drilling, the pile casing connector 2 is placed on the second bearing table 42, the bottom section pile casing and the plurality of standard section pile casings 3 are placed on the third bearing table, after preparation work is finished, the rotary drilling rig 1 starts drilling, after one drilling is finished, the rotary drilling rig 1 rotates the drill rod 11 to the position above the first bearing table 41, the drill bit 12 is placed on the first bearing table 41, the worker unlocks the drill rod 11 and the drill bit 12, the rotary drilling rig 1 continues to rotate to the position above the second bearing table 42, the drill rod 11 is driven to be in butt joint with the pile casing connector 2, and the worker locks the drill rod 11 and the pile casing connector 2, so that installation of the pile casing connector 2 is realized. The rotary drilling rig 1 continues to rotate too high the drill rod 11, with the drill rod 11 above the third load table 43, and lowers the drill rod 11, connects the casing coupler 2 with the bottom section casing or standard section casing 3, then raises and rotates the bottom section casing or standard section casing 3 directly above the pile hole 5, and rotationally presses the bottom section casing or standard section casing 3 down into the pile hole 5. Repeating the above actions, thereby realizing the follow-up pore-forming process of the full casing.

Specifically, referring to fig. 2, the top of the standard joint casing 3 is provided with an inner connecting ring 31, the bottom is provided with an outer connecting ring 32, and both the inner connecting ring 31 and the outer connecting ring 32 are integrally formed with the standard joint casing 3. The inner diameter of the inner connecting ring 31 is the same as the inner diameter of the standard joint casing 3, and the outer diameter is smaller than the outer diameter of the standard joint casing 3; the outer diameter of the outer connecting ring 32 is the same as the outer diameter of the standard joint casing 3, and the inner diameter is larger than the inner diameter of the standard joint casing 3. The top of the bottom section casing is provided with an inner connecting ring 31, not shown.

Referring to fig. 2, the inner connecting ring 31 and the outer connecting ring 32 are each provided with a plurality of threaded holes 311 uniformly along their circumferences, and in this embodiment, the inner connecting ring 31 and the outer connecting ring 32 are each provided with ten threaded holes 311. The inner connecting ring 31 is provided with a plurality of positioning blocks 312, the positioning blocks 312 are uniformly distributed along the circumferential direction of the inner connecting ring 31, the positioning blocks 312 are arc plates attached to the inner connecting ring 31, one side of the positioning blocks 312 away from the inner connecting ring 31 is flush with the outer wall of the standard joint protection barrel 3, one end of the positioning blocks 312 away from the standard joint protection barrel 3 is in a conical shape, in this embodiment, the inner connecting ring 31 is provided with five positioning blocks 312, and the positioning blocks are located in the middle of two adjacent threaded holes 311. The outer connecting ring 32 is provided with a plurality of first positioning grooves 321, and the number and the shape of the first positioning grooves 321 are the same as those of the positioning blocks 312.

When the standard joint protection cylinder 3 and the bottom joint protection cylinder or the two standard joint protection cylinders 3 are spliced, the outer connecting ring 32 and the inner connecting ring 31 are spliced, in the splicing process, the positioning block 312 is spliced and matched with the first positioning groove 321, so that the relative positions of the outer connecting ring 32 and the inner connecting ring 31 can be rapidly positioned, the outer connecting ring 32 and the threaded hole 311 on the inner connecting ring 31 are aligned conveniently, and the pointed cone end on the positioning block 312 is convenient for the splicing and matching of the positioning block 312 and the positioning groove 3221, so that the splicing efficiency of the protection cylinder is improved; after the outer connecting ring 32 and the inner connecting ring 31 are inserted, the outer connecting ring 32 and the threaded hole 311 on the inner connecting ring 31 are connected in a threaded manner through the inner hexagon bolts, so that the locking of the outer connecting ring 32 and the inner connecting ring 31 is realized.

Referring to fig. 3, the bottom end of the drill rod 11 is welded with a connecting portion 111, the connecting portion 111 is a rectangular block, the bottom of the connecting portion 111 is provided with a mounting hole, the tops of the casing connector 2 and the drill bit 12 are both provided with a mounting portion 21, the mounting portion 21 is a rectangular block, the top of the mounting portion 21 is provided with a jack 211, the jack 211 is adapted to the shape of the connecting portion 111, the top of the jack 211 is provided with a chamfer so that the connecting portion 111 is inserted into the jack 211, the bottom of the mounting portion 21 is provided with a mounting hole of the same size as the bottom of the connecting portion 111, and when the connecting portion 111 is inserted into the bottom of the jack 211, the mounting holes on the connecting portion 111 and the mounting portion 21 are aligned.

When the drill rod 11 or the casing connector 2 is connected with the drill rod 11, the position of the drill rod 11 is adjusted by the rotary drilling rig, the connecting portion 111 is located above the mounting portion 21, the connecting portion 111 is inserted into the insertion hole 211, and a worker inserts the plug 212 into the mounting holes of the connecting portion 111 and the mounting portion 21, so that the drill rod 11 or the casing connector 2 is mounted.

Referring to fig. 3, the casing connector 2 further includes a connecting cylinder 22 and locking assemblies 23, the connecting cylinder 22 is a cylinder with a downward opening, the locking assemblies 23 are provided with a plurality of groups, the plurality of groups of locking assemblies 23 are uniformly distributed along the circumferential direction of the connecting cylinder 22, and in this embodiment, the locking assemblies 23 are provided with five groups. The connecting cylinder 22 is provided with a plurality of threaded holes 311 with the same size as the connecting ring 31, the circumference of the connecting cylinder 22 is provided with a plurality of second positioning grooves 221, the shapes and the sizes of the second positioning grooves 221 and the positioning blocks 312 are the same, and the number of the second positioning grooves is the same, in this embodiment, the connecting cylinder 22 is provided with ten threaded holes 311 and five second positioning grooves 221.

Referring to fig. 3, the locking assembly 23 includes a locking bolt 231, a driven gear 232, a driving gear post 233 and a driving motor 234, a threaded cylinder 235 is welded to the connecting cylinder 22 near the threaded hole 311 of the locking assembly 23, the threaded cylinder 235 is connected with the threads of the threaded hole 311, and the locking bolt 231 is connected with the threads of the threaded cylinder 235; the driven gear 232 is fixed at one end of the locking bolt 231 far away from the threaded cylinder 235, the driving tooth post 233 is rotationally connected with the connecting cylinder 22 and is always meshed with the driven gear 232, and the driven gear 232 can slide along the length square of the driving tooth post 233; the driving motor 234 is a servo motor, the driving motor 234 is fixedly connected with the connecting cylinder 22 through bolts, and the movable end of the driving motor 234 is fixedly connected with the driving tooth column 233 coaxially.

When the pile casing connector 2 is connected with the standard joint pile casing 3 or the bottom joint pile casing, the connecting cylinder 22 is inserted into the inner connecting ring 31, in the insertion process, the positioning block 312 is inserted into the second positioning groove 221, so that the threaded cylinder 235 is aligned with the threaded hole 311 on the inner connecting ring 31, the driving motor 234 is started, the driving motor 234 drives the driving tooth column 233 to rotate, the driven gear 232 drives the locking bolt 231 to rotate, the locking bolt 231 gradually moves close to the inner connecting ring 31 and is in threaded connection with the threaded hole 311 on the inner connecting ring 31, and the inner connecting ring 31 is connected with the connecting cylinder 22.

Referring to fig. 4, after the rotary drilling machine 1 completes one drilling of the pile hole 5, the drill bit 12 is placed on the first bearing table, the worker pulls out the plug 212, the drill bit 12 is detached from the drill rod 11, then the rotary drilling machine transfers the drill rod 11 to the second bearing table 42 to be placed thereon, the worker connects the casing connector 2 on the second bearing table 42 with the drill rod 11, and the rotary drilling machine 1 lifts the casing connector 2 to the upper side of the standard section casing 3 or the bottom section casing to extract the casing.

Referring to fig. 4 and 5, a yielding slot 411 is formed in the first bearing table 41, and the yielding slot 411 can avoid the blade at the bottom of the drill bit 12, so that the drill bit 12 can be stably placed on the first bearing table 41. The second loading table 42 is provided with a guide table 421, the guide table 421 is in a shape of a circular table, the guide table 421 and the second loading table are coaxially arranged, the outer diameter of the guide table 421 is the same as the inner diameter of the connecting cylinder 22, and when the protecting cylinder connector 2 is placed on the second loading table 42, the guide table 421 can guide the connecting cylinder 22, so that the protecting cylinder connector 2 can be conveniently positioned to the center of the second loading table 42.

Referring to fig. 6, a plurality of placing cylinders 431 are disposed on the third bearing platform 43, the placing cylinders 431 are cylinders with upward openings, the inner diameter of each placing cylinder 431 is slightly larger than the diameter of the standard joint casing 3, the placing cylinders 431 are equally spaced along the circumference of the third bearing platform 43, in this embodiment, five placing cylinders 431 are disposed, and the placing cylinders 431 are rotatably connected with the third bearing platform 43, so that when the casing connector 2 is in butt joint with the standard joint casing 3 or the bottom joint casing, the standard joint casing 3 or the bottom joint casing can be self-position adjusted under the extrusion of the positioning block 312 and the second positioning groove 221.

Referring to fig. 6, after the standard section casing 3 is extracted from the third bearing table 43, the rotary drilling rig 1 inserts the standard section casing 3 into the standard section casing 3 or the bottom section casing in the pile hole 5, and a worker connects the inner connecting ring 31 with the threaded hole 311 on the outer connecting ring 32 by screw threads through the socket head cap bolts, so that the standard section casing 3 is spliced, and the rotary drilling rig 1 rotationally presses the standard section casing 3 into the pile hole 5 through the drill rod 11.

Referring to fig. 7, the pile hole 5, the first loading table 41 and the second loading table 42 are located on the same circular arc line, and the circular arc line is located on the rotation center of the rotary drilling rig, and the placing cylinder 431 on the third loading table 43, which is close to the second loading table 42, is also located on the circular arc line, so that the rotary drilling rig 1 can control the drill rod 11 to rotate to perform the processes of drilling, dismounting the drill bit 12, installing the drill bit 12, dismounting the casing connector 2, installing the casing connector 2 and extracting the casing, without moving the position of the rotary drilling rig 1, thereby improving the efficiency of cast-in-place pile construction.

The implementation principle of the full pile casing follow-up process of the hole-forming filling pile of the rotary pile digger is as follows: after the rotary drilling rig 1 drills a hole once, the drill bit 12 is disassembled on the first bearing table 41, the pile casing connector 2 is installed on the second bearing table 42, the pile casing is extracted on the third bearing table 43, then the pile casing is spliced with the pile hole 5, and the pile casing is rotated and pressed down, so that the whole pile casing is supplied in the drilling process, the possibility of collapse and ground cracking of the inner wall of the pile hole 5 is reduced, the consumption of slurry and concrete is reduced, the maintenance cost is reduced, the construction cost is reduced, and the construction safety is ensured.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

The foregoing are all optional embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. A follow-up process for a full pile casing of a hole-forming filling pile of a rotary pile digger is characterized in that: the method comprises the following steps:

s1, removing barriers, leveling a site, lofting the site by using a total station, and determining pile points;

s2, building a bearing platform (4) near a pile point, wherein the bearing platform (4) is used for bearing a bottom section pile casing, a standard section pile casing (3), a drill bit (12) and a pile casing connector (2);

s3, drilling the pile point to a depth of 1m by using a rotary drilling rig (1);

s4, after lifting the drill rod (11), detaching the drill bit (12), installing the pile casing connector (2) on the drill rod (11), connecting the pile casing connector (2) with the bottom section pile casing, rotationally pressing the bottom section pile casing into the pile hole (5) through the drill rod (11), and checking the perpendicularity of the bottom section pile casing by using a horizontal ruler when the lower end of the bottom section pile casing enters the depth of 0.5m of the pile hole (5);

s5, continuously drilling the pile hole (5) for 3m by using the rotary drilling rig (1);

s6, after lifting the drill rod (11), detaching the drill bit (12), installing the pile casing connector (2) on the drill rod (11), connecting the pile casing connector (2) with the standard joint pile casing (3), butting the standard joint pile casing (3) with the bottom joint pile casing through the drill rod (11), locking the standard joint pile casing (3) with the bottom joint pile casing, rotationally pressing the bottom joint pile casing into the pile hole (5) through the drill rod (11), and checking the perpendicularity of the bottom joint pile casing by using a horizontal rule when the lower end of the bottom joint pile casing enters the depth of 1.5m of the pile hole (5);

s7, repeating the steps S4 and S5 until the design depth of the pile hole (5) is reached;

s8, manufacturing, hanging and installing a reinforcement cage, connecting the guide pipe and lowering the guide pipe into the pile hole (5);

s9, pouring concrete into the pile hole (5);

and S10, after concrete pouring is completed, the standard joint protection cylinder (3) and the bottom joint protection cylinder are pulled out.

2. The full casing follow-up process for the bored concrete pile of the rotary pile digger according to claim 1, wherein the following steps are: be equipped with first plummer (41), second plummer (42) and third plummer (43) on plummer (4), first plummer (41) are used for bearing drill bit (12), second plummer (42) are used for bearing and protect a section of thick bamboo connector (2), third plummer (43) are used for bearing and protect a section of thick bamboo and a plurality of standard festival and protect a section of thick bamboo (3), first plummer (41), second plummer (42) and third plummer (43) all rotate with plummer (4) to be connected.

3. The full casing follow-up process for the bored concrete pile of the rotary pile digger according to claim 2, wherein the following steps are: be equipped with a plurality of barrels (431) of placing on third plummer (43), place barrel (431) and be used for placing end festival protection barrel or standard festival protection barrel (3), place barrel (431) and third plummer (43) rotation and be connected, a plurality of place barrel (431) are along the axis of rotation week side distribution of third plummer (43).

4. A rotary pile driver bored concrete pile full casing follow-up process according to claim 3, wherein: the first bearing table (41), the second bearing table (42), the pile hole (5) and one of the placing cylinders (431) can be located on the same circular arc track, and the arc center of the circular arc is located on the rotation axis of the rotary drilling rig (1).

5. The full casing follow-up process for the bored concrete pile of the rotary pile digger according to claim 1, wherein the following steps are: the utility model discloses a standard festival protects a section of thick bamboo (3) top coaxial interior go-between (31) that is equipped with, top coaxial outer go-between (32) that is equipped with, the coaxial interior go-between (31) that is equipped with in end festival protects a section of thick bamboo top, screw hole (311) of same quantity and size have been seted up on interior go-between (31), outer go-between (32), the external diameter size of interior go-between (31) is the same with the internal diameter size of outer go-between (32), interior go-between (31) can peg graft with outer go-between (32).

6. The full casing follow-up process for the bored concrete pile of the rotary pile driver according to claim 5, wherein: the inner connecting ring (31) is provided with a plurality of positioning blocks (312), the outer connecting ring (32) is provided with a plurality of first positioning grooves (321), the positions and the shapes of the first positioning grooves (321) and the positioning blocks (312) are matched, and one first positioning groove (321) corresponds to one positioning block (312).

7. The full casing follow-up process for the bored concrete pile of the rotary pile digger according to claim 6, wherein the following steps are: the drill bit (12) and the casing connector (2) are both spliced with the drill rod (11) and locked by a bolt (212).

8. The full casing follow-up process for the bored concrete pile of the rotary pile digger according to claim 7, wherein: the pile casing connector (2) comprises a mounting part (21) and a connecting cylinder (22), the drill rod (11) is inserted into the mounting part (21), the connecting cylinder (22) can be inserted into an inner connecting ring (31), a plurality of second positioning grooves (221) are formed in the connecting cylinder (22), the positions and the shapes of the second positioning grooves (221) and the positioning blocks (312) are matched, one second positioning groove (221) corresponds to one positioning block (312), and a plurality of threaded holes (311) which are the same in number and size with the inner connecting ring (31) are formed in the connecting cylinder (22).

9. The full casing follow-up process for the bored concrete pile of the rotary pile digger according to claim 8, wherein the following steps are: the connecting cylinder (22) is provided with a locking assembly (23), the locking assembly (23) is used for locking the connecting cylinder (22) and the inner connecting ring (31), and the locking assembly (23) is driven by electricity.

10. The full casing follow-up process for the bored concrete pile of the rotary pile digger according to claim 9, wherein: the locking assembly (23) comprises a locking bolt (231), a driven gear (232), a driving tooth column (233) and a driving motor (234), wherein the locking bolt (231) is in threaded connection with the connecting cylinder (22), one end of the locking bolt (231) can penetrate through the connecting cylinder (22) and is in threaded connection with the inner connecting ring (31), the other end of the locking bolt is fixedly connected with the driven gear (232) coaxially, the driving tooth column (233) is rotationally connected with the connecting cylinder (22), the driven gear (232) is meshed with the driving tooth column (233) and is in sliding connection with the driving tooth column (233), and the driving motor (234) is arranged on the connecting cylinder (22) and is used for driving the driving tooth column (233) to rotate.