CN111472688B - Self-drilling tubular string support device and method thereof - Google Patents
Self-drilling tubular string support device and method thereof Download PDFInfo
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- CN111472688B CN111472688B CN202010303962.XA CN202010303962A CN111472688B CN 111472688 B CN111472688 B CN 111472688B CN 202010303962 A CN202010303962 A CN 202010303962A CN 111472688 B CN111472688 B CN 111472688B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
- E02D7/30—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes by driving cores
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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- Earth Drilling (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
本发明所述自钻式管柱支护装置及其方法，是一种易于组装和拆卸支护体系的管桩钻进与注浆支护作业装置，从而能够实现一种大直径、高效率和多种土体条件的岩土工程施工系统、设备设计与作业使用方法。包括有安装于钻头支架上的动力钻机，泵送弯管和管桩连接器分别连通于动力钻机；管桩连接器具有中空的管状结构，其垂向两端分别连接于动力钻机和管桩；拉杆沿垂向依次地贯穿连接动力钻机、管桩连接器和管桩，在拉杆的垂向底端连接可提拉钻头；可提拉钻头包括有容纳拉杆贯穿连接的、位于轴向中心的轴身，在轴身外周侧枢轴连接有数个带有钻齿体的钻齿支架；钻齿支架沿轴身外周侧的枢轴连接点具有周向运动的趋势；在拉杆沿垂向向上运动时，钻齿支架被水平推向并收纳于管桩的底端。
The self-drilling pipe string support device and the method thereof of the present invention is a pipe pile drilling and grouting support operation device which is easy to assemble and disassemble the support system, so as to realize a large diameter, high efficiency and Geotechnical engineering construction system, equipment design and operation method for various soil conditions. It includes a power drilling rig installed on the drill bit bracket, and the pumping elbow and the pipe pile connector are respectively connected to the power drilling rig; the pipe pile connector has a hollow tubular structure, and its vertical ends are respectively connected to the power drilling rig and the pipe pile; The tie rod is vertically connected to the power drilling rig, the pipe pile connector and the pipe pile in sequence, and a pullable drill bit is connected to the vertical bottom end of the tie rod; The shaft body is pivotally connected with several drill tooth brackets with drill tooth bodies on the outer circumference side of the shaft body; the drill tooth brackets have a tendency to move circumferentially along the pivot connection points on the outer circumference side of the shaft body; when the tie rod moves vertically upwards , the drill bracket is pushed horizontally to and received at the bottom end of the pipe pile.
Description
Technical Field
The invention relates to a self-drilling type supporting system and a construction method for soil body tubular pile construction, and belongs to the field of building construction.
Background
With the rapid development of the economy of China, the construction of various buildings is in the spotlight. The precast tubular pile is widely applied to various pile foundations and foundation treatment projects. Especially in the development of marine island engineering in recent years, the large-diameter tubular pile has obvious reinforcing effect on an island foundation. With the diversification of pile types and construction environments, the improvement of prefabricated pipe pile types and the innovation of construction methods thereof are in endlessly in the domestic industry. Currently, the main pile foundation construction in practical engineering includes the following methods:
hammering method: the most widely used pile sinking method is used in pile foundation construction. The impact energy of the hammer is used to overcome the resistance of soil to the pile, so that the pile is sunk to a preset depth. Is generally suitable for clay used for hard plastics and soft plastics. When the method is used for sandy soil or gravel soil with difficulty, a drilling method and a water flushing method can be used as auxiliary methods. The common pile hammer comprises a steam hammer and a diesel hammer.
A vibration method: the pile sinking method by the vibration method is characterized in that a high-power electric vibration exciter is used for generating vibration with the frequency of 700-900 times/minute, so that the resistance of soil to the pile is overcome, and the pile is sunk into the soil. It is generally suitable for sinking steel sheet piles into sandy soil, and can also be used for sinking prefabricated reinforced concrete pipe piles by water flushing method. Typical specifications for vibration machines for vibrating driven piles are 20 tons and 40 tons. At present, the pile sinking machine head with high frequency of 10000 times/minute is used, the vibration and the noise are small, and the pile sinking speed is high.
Pressing in method: the pile sinking method by pressing in has the advantages of no noise, no vibration, low cost and the like, and the common pile pressing machines are 80 tons and 120 tons. The pile is pressed into the soil by the aid of equipment dead weight and counter weight and pressurization of a transmission mechanism, so that the pile pressing machine is only used for soft soil foundations.
Water jetting method: hammering and vibrating two auxiliary methods of pile sinking. During construction, a high-speed water pump is used for generating high-speed jet flow, so that the resistance of soil is destroyed or reduced, and the pile is easier to sink into the soil by hammering or vibration. The water jetting method is mostly suitable for sandy soil or gravel soil, and the water jetting depth needs to be controlled when the water jetting method is used.
Along with the needs of engineering, major diameter tubular pile is more suitable for actual engineering demand, but the construction of present all kinds of major diameter tubular piles also has many-sided technological problem: (1) the existing tubular pile construction process cannot complete the high-efficiency construction of the large-diameter tubular pile. If the construction processes such as static pressure and hammering are adopted, the construction process is common in the construction of precast piles with the diameter of below 600mm, and is limited to the reasons such as equipment volume, pile body strength and construction difficulty, and the traditional precast pile construction process cannot effectively finish the construction of precast piles with the diameter of above 800 mm. (2) The construction difficulty is higher in harder strata such as clay, compact sand layers and the like. The traditional construction processes such as static pressure, hammering and the like adopt a soil squeezing construction method, and the construction difficulty is higher in harder strata such as clay, dense sand layers and the like. (3) The precast pile implanting construction methods such as pipe drilling, jet grouting, stirring and stiffening pile and the like have complex process and low efficiency. The prior precast pile implanting construction method introduces the Japanese process mostly, and is not suitable for domestic construction no matter the equipment size or the process complexity.
Therefore, a novel large-diameter tubular pile construction technology is urgently needed in China at present to fill up the blank of the current engineering. In view of this, the present patent application is specifically proposed.
Disclosure of Invention
The invention provides a self-drilling tubular pile supporting device and a method thereof, aiming at solving the problems in the prior art and providing a tubular pile drilling and grouting supporting operation device which is easy to assemble and disassemble a supporting system, thereby realizing a geotechnical engineering construction system with large diameter, high efficiency and various soil body conditions, and an equipment design and operation use method.
In order to achieve the design purpose, the self-drilling type tubular column supporting device comprises a power drilling machine arranged on a drill bit support, wherein a pumping bent pipe and a tubular pile connector are respectively communicated with the power drilling machine;
the tubular pile connector is of a hollow tubular structure, and the vertical two ends of the tubular pile connector are respectively connected with the power drilling machine and the tubular pile; the pull rod sequentially penetrates through the power drilling machine, the tubular pile connector and the tubular pile along the vertical direction, and a liftable drill bit is connected to the vertical bottom end of the pull rod; the liftable drill bit comprises a shaft body which is used for accommodating the pull rod to penetrate and is connected and positioned at the axial center, and a plurality of drill tooth supports with drill tooth bodies are pivotally connected on the outer peripheral side of the shaft body; the drill tooth bracket has a tendency of circumferential movement along a pivot connection point on the outer periphery of the shaft body; when the pull rod moves upwards along the vertical direction, the drill tooth bracket is horizontally pushed to and is accommodated at the bottom end of the tubular pile.
Furthermore, the top end of the tubular pile connector is fixedly connected to the power drilling machine through threads, and the bottom end of the tubular pile connector is provided with a tubular pile connector bottom cover which is connected to the top end of the tubular pile in a nested manner.
Further, the tubular pile bottom be provided with inside annular bottom recess, when the brill tooth support by upwards tensile, the brill tooth support is positioned between axle body, bottom recess horizontally, can carry the fixed connection of hand drill bit in whole in the bottom of tubular pile.
Furthermore, a hoop raised head is formed on the outer circumference of the shaft body of the liftable drill bit; a hoop groove is formed at the horizontal inner side end of the drill tooth support, and a hoop raised head and the hoop groove form a mutually matched nested structure; a supporting raised head is formed at the horizontal outer side end of the drill tooth bracket, and the supporting raised head and the bottom groove form a mutually matched nested structure; the horizontal inner side end of the drill tooth support is connected to the shaft body through a rotating shaft pivot.
Furthermore, the upper end and the lower end of the pull rod end are sleeved on the pull rod and the upper end and the lower end of the shaft body.
The application method of the self-drilling type tubular column supporting device comprises the following steps:
1) installation of equipment
The power drilling machine is fixedly installed on the drilling machine support, the pumping bent pipe is arranged on the power drilling machine, and the inner cavity of the pumping bent pipe is communicated with the tubular pile connector and the inner cavity of the tubular pile, so that continuous grouting into the annular tubular pile is realized; the tubular pile connector is fixedly connected with the power drilling machine through threads, and the power drilling machine is connected with the tubular pile through the tubular pile connector;
2) drilling operation
The power drilling machine is powered on, the power drilling machine drives the tubular pile to rotate through the tubular pile connector, the liftable drill bits at the bottom of the tubular pile simultaneously and integrally and synchronously rotate, the drilling tooth bodies continuously cut rock soil, and the tubular pile continuously extends into a soil body in the vertical direction;
3) separating pipe pile
After drilling is finished, the pull rod is lifted upwards, the shaft body is lifted at the lower end of the end head of the pull rod, the supporting raised head is driven to rotate anticlockwise, the supporting raised head and the rotating shaft serve as fulcrums along with continuous pulling of the pull rod, the drill tooth support is guided to rotate anticlockwise based on the lever principle, therefore, the hoop raised head and the hoop groove are driven to be disengaged along with rotation of the rotating shaft, and the drill tooth support is integrally folded inwards.
The supporting raised head is separated from the bottom groove, and the drill bit can be pulled to move upwards from the inner cavity of the tubular pile under the driving of the pull rod.
4) Repeating work
After the pipe piles are separated, the whole drilling machine automatically runs to the next position; and then injecting cement slurry into the inner cavity of the pipe pile until the inner cavity is filled with the cement slurry, and finally finishing the installation of the pipe pile.
And connecting the tubular pile connector, the liftable drill bit and the pull rod to install a new tubular pile at a new installation station, and repeating the operation steps until the tubular pile is drilled into a specified depth.
As described above, the self-drilling type tubular column supporting device and the method thereof have the advantages that: the whole structure is simple and easy to be disassembled and reassembled again; the method can be suitable for the drilling and grouting operation construction of the tubular pile with large diameter and large depth under various foundation soil conditions, thereby effectively saving the construction period and reducing the difficulty and the construction cost of field operation.
Drawings
The present application will now be further described with reference to the following drawings;
fig. 1 is a schematic view showing the overall construction of a self-drilling type pipe string supporting device;
fig. 2 is a front view and a top view of the tubular pile connector;
fig. 3 is a using state diagram of the pipe pile connector connected to the top end of the pipe pile;
fig. 4 is a schematic structural view of the tube pile;
FIG. 5 is a schematic view of the connection of the pull rod to the liftable drill bit in use;
FIG. 6 is a schematic top view of a pull-up drill bit;
FIG. 7 is a schematic view of the connection to the pull rod with the pull bit retracted upward;
figure 8 is a schematic diagram of the self-drilling pipe string support system after completion of the self-drilling pipe string support system.
As shown in fig. 1 to 8, 1, a power drill; 2. pumping a bent pipe; 3. a tubular pile connector; 3-1, a tubular pile connector bottom cover; 4. a tubular pile; 4-1, a bottom groove; 5. a drill bit can be pulled; 5-1, drilling a tooth body; 5-2, drilling a tooth bracket; 5-3, a hoop raised head; 5-4, clamping hoop grooves; 5-5, a rotating shaft; 5-6, supporting raised heads; 5-7, a shaft body; 6. a drill bit holder; 7. a pull rod; 7-1, the upper end of the end head of the pull rod; 7-2 and the lower end of the end head of the pull rod.
Detailed Description
Example 1 to further illustrate the technical means adopted by the present application to achieve the intended objects, the following preferred embodiments are proposed in conjunction with the accompanying drawings.
This application self-drilling formula tubular column supporting device, provide a novel tubular column support system and make up current major diameter tubular pile special-purpose drilling machine equipment and special annular tubular pile and mainly including, install power drill 1 on drill bit support 6, pump sending return bend 2 and tubular pile connector 3 communicate respectively in power drill 1.
The tubular pile connector 3 is of a hollow tubular structure, and the two vertical ends of the tubular pile connector are respectively connected to the power drilling machine 1 and the tubular pile 4;
the pull rod 7 sequentially penetrates through the power drilling machine 1, the tubular pile connector 3 and the tubular pile 4 along the vertical direction, and the vertical bottom end of the pull rod 7 is connected with a liftable drill bit 5;
the liftable drill bit 5 comprises a shaft body 5-7 which is used for accommodating a pull rod 7 to penetrate and is connected and positioned at the axial center, and a plurality of drill tooth supports 5-2 with drill tooth bodies 5-1 are pivotally connected on the outer peripheral side of the shaft body 5-7;
the drill tooth bracket 5-2 has a circumferential movement trend along a pivot connection point on the outer circumferential side of the shaft body 5-7;
when the pull rod 7 moves vertically upward, the drill bit holder 5-2 is pushed horizontally toward and received in the bottom end of the pipe pile 4.
The top end of the tubular pile connector 3 is fixedly connected to the power drilling machine 1 through threads, and the bottom end of the tubular pile connector 3 is provided with a tubular pile connector bottom cover 3-1 which is connected to the top end of the tubular pile 4 in a nested manner.
The bottom end of the tubular pile 4 is provided with an inner annular bottom groove 4-1, when the drill tooth support 5-2 is stretched upwards, the drill tooth support 5-2 can be horizontally positioned between the shaft body 5-7 and the bottom groove 4-1, so that the liftable drill bit 5 is integrally and fixedly connected with the bottom end of the tubular pile 4.
A hoop raised head 5-3 is formed on the outer circumference of the shaft body 5-7 of the liftable drill bit 5; a hoop groove 5-4 is formed at the horizontal inner side end of the drill tooth support 5-2, and a hoop raised head 5-3 and the hoop groove 5-4 form a mutually matched nested structure; a supporting raised head 5-6 is formed at the horizontal outer side end of the drill tooth bracket 5-2, and the supporting raised head 5-6 and the bottom groove 4-1 form a mutually matched nested structure;
the horizontal inner end of the drill tooth bracket 5-2 is pivotally connected to the shaft body 5-7 through a rotating shaft 5-5.
The upper end 7-1 of the pull rod end and the lower end 7-2 of the pull rod end are sleeved on the upper end and the lower end of the shaft body 5-7 of the pull rod 7.
The self-drilling tubular column supporting device applying the structural design scheme has the using method that after the position needing to be piled is determined, the special large-diameter annular tubular pile 4 is connected and installed on the drilling machine 1, and the drilling machine drives the annular tubular pile 4 to integrally and synchronously rotate after the power drilling machine 1 is positioned. The liftable drill bit 5 is matched with the bottom end of the tubular pile 4, the tubular pile 4 rotates and drives the drill bit to rotate together, and the drilling tooth body 5-1 can break soil or rock mass inside and outside the tubular wall in the continuous drilling and rotating process of the annular tubular pile 4. Thereby realizing the geotechnical engineering construction under various soil base conditions such as gravel, clay, broken stone and the like.
Specifically, the use method of the self-drilling type tubular column supporting device comprises the following steps:
1) installation of equipment
As shown in fig. 1, a power drilling machine 1 is fixedly installed on a drilling machine support 6, a pumping elbow 2 is arranged on the power drilling machine 1, and the inner cavity of the pumping elbow 2 is communicated with a tubular pile connector 3 and the inner cavity of a tubular pile 4, so that the function of continuously grouting into the annular tubular pile 4 is realized. Wherein, tubular pile connector 3 and power drill 1 carry out fixed connection through the screw thread, and power drill 1 is connected together through tubular pile connector 3 and tubular pile to drive tubular pile 4 integrative, rotate in step.
As shown in fig. 2 to 4, the tubular pile connector 3 is connected with the tubular pile 4 through the tubular pile connector bottom cover 3-1, the tubular pile connector bottom cover 3-1 is integrally clamped at the end of the tubular pile 4, and the surface-to-surface joint ensures that the tubular pile connector bottom cover and the tubular pile connector are fixed together.
As shown in fig. 4 to 6, the bottom groove 4-1 of the pipe pile 4 is engaged with the supporting nose 5-5 of the liftable drill bit 5, so as to fix the liftable drill bit 5 and drive the liftable drill bit 5 to integrally and synchronously rotate, and the bottom groove is used for driving the drill tooth body 5-1 on the drill tooth support 5-2 to cut rock and soil.
The hoop raised head 5-3 and the hoop groove 5-4 which are arranged on the shaft body 5-7 are connected through the rotating shaft 5-5, and the two are matched through the extrusion between the surfaces, so that the horizontal extension of the drill tooth support 5-2 is ensured.
As shown in figures 1 and 7, a pull rod 7 penetrates through the whole device and is fixed with the liftable drill bit 5 into a whole, and the upper end 7-1 of the end of the pull rod ensures the horizontal positioning of the drill tooth bracket 5-2.
2) Drilling operation
The power drilling machine 1 is powered on, the power drilling machine 1 drives the tubular pile 4 to rotate through the tubular pile connector 3, the liftable drill bit 5 at the bottom of the tubular pile 4 simultaneously and integrally and synchronously rotates, the drilling tooth body 5-1 continuously cuts rock soil, and the tubular pile 4 continuously extends into a soil body along the vertical direction.
3) Separating pipe pile
After drilling is finished, the pull rod 7 is lifted upwards, the shaft body 5-7 is lifted by the lower end 7-2 of the end of the pull rod to drive the supporting raised head 5-6 to rotate anticlockwise, the supporting raised head 5-6 and the rotating shaft 5-5 serve as fulcrums along with continuous pulling of the pull rod 7, the drill tooth support 5-2 is guided by the lever principle to rotate anticlockwise, accordingly, the hoop raised head 5-3 and the hoop groove 5-4 are enabled to be disengaged along with rotation of the rotating shaft 5-5, and the drill tooth support 5-2 is integrally folded inwards.
As shown in fig. 7, the supporting nose 5-6 and the bottom groove 4-1 are disengaged, and the bit 5 can be pulled and moved upwards from the inner cavity of the tubular pile 4 under the driving of the pull rod 7. The pipe pile connector 3 and the pipe pile 4 are separated from each other by driving the bottom cover 3-1 of the pipe pile connector to move upwards to be separated from the inner cavity of the pipe pile 4 through the upper end 7-1 of the end of the pull rod.
4) Repeating work
After the pipe piles are separated, the whole equipment of the drilling machine automatically runs to the next position as shown in fig. 8; and then injecting cement slurry into the inner cavity of the tubular pile 4 until the inner cavity is filled with the cement slurry, and finally finishing the installation of the tubular pile.
And (3) connecting the tubular pile connector 3, the liftable drill bit 5 and the pull rod 7 again at a new installation station to install a new tubular pile 4, and repeating the operation steps until the specified depth is drilled.
Similar technical solutions can be derived from the solutions given in the figures and the description, as described above. However, any solution that does not depart from the structure of the present invention is intended to fall within the scope of the claims of the present application.
Claims (3)
1. The utility model provides a from formula tubular column supporting device that bores which characterized in that: comprises a power drilling machine arranged on a drill bit bracket,
the pumping bent pipe and the pipe pile connector are respectively communicated with a power drilling machine;
the tubular pile connector is of a hollow tubular structure, and the vertical two ends of the tubular pile connector are respectively connected with the power drilling machine and the tubular pile;
the pull rod sequentially penetrates through the power drilling machine, the tubular pile connector and the tubular pile along the vertical direction, and a liftable drill bit is connected to the vertical bottom end of the pull rod;
the liftable drill bit comprises a shaft body which is used for accommodating the pull rod to penetrate and is connected and positioned at the axial center, and a plurality of drill tooth supports with drill tooth bodies are pivotally connected on the outer peripheral side of the shaft body;
the drill tooth bracket has a tendency of circumferential movement along a pivot connection point on the outer periphery of the shaft body;
when the pull rod moves upwards along the vertical direction, the drill tooth bracket is horizontally pushed to and stored at the bottom end of the tubular pile;
the top end of the tubular pile connector is fixedly connected to the power drilling machine through threads, and the bottom end of the tubular pile connector is provided with a tubular pile connector bottom cover which is connected to the top end of the tubular pile in a nested manner;
the bottom end of the tubular pile is provided with an internal annular bottom groove, when the drilling tooth support is stretched upwards, the drilling tooth support is horizontally positioned between the shaft body and the bottom groove, and the liftable drill bit is integrally and fixedly connected to the bottom end of the tubular pile;
a hoop raised head is formed on the outer circumference of the shaft body of the liftable drill bit; a hoop groove is formed at the horizontal inner side end of the drill tooth support, and a hoop raised head and the hoop groove form a mutually matched nested structure; a supporting raised head is formed at the horizontal outer side end of the drill tooth bracket, and the supporting raised head and the bottom groove form a mutually matched nested structure; the horizontal inner side end of the drill tooth support is connected to the shaft body through a rotating shaft pivot.
2. A self-drilling pipe string support device according to claim 1, wherein: a pull rod is sleeved on the pull rod
The upper end of the pull rod end is arranged at the upper end of the shaft body, and the lower end of the pull rod end is arranged at the lower end of the shaft body.
3. A method of using a self-drilling pipe string supporting device according to claim 1 or 2, wherein: comprises the following steps of (a) carrying out,
1) installation of equipment
The power drilling machine is fixedly installed on the drilling machine support, the pumping bent pipe is arranged on the power drilling machine, and the inner cavity of the pumping bent pipe is communicated with the tubular pile connector and the inner cavity of the tubular pile, so that continuous grouting into the annular tubular pile is realized; the tubular pile connector is fixedly connected with the power drilling machine through threads, and the power drilling machine is connected with the tubular pile through the tubular pile connector;
2) drilling operation
The power drilling machine is powered on, the power drilling machine drives the tubular pile to rotate through the tubular pile connector, the liftable drill bits at the bottom of the tubular pile simultaneously and integrally and synchronously rotate, the drilling tooth bodies continuously cut rock soil, and the tubular pile continuously extends into a soil body in the vertical direction;
3) separating pipe pile
After drilling is finished, the pull rod is lifted upwards, the lower end of the end head of the pull rod lifts the shaft body, and the support raised head is driven to rotate downwards; with the pulling rod being pulled continuously, the supporting raised head and the rotating shaft are used as fulcrums, the drill tooth support is guided to rotate downwards based on the lever principle, so that the hoop raised head and the hoop groove are separated along with the rotation of the rotating shaft, and the drill tooth support is integrally folded inwards;
the supporting raised head is separated from the bottom groove, and the drill bit can be lifted up from the inner cavity of the tubular pile under the drive of the pull rod;
4) repeating work
After the pipe piles are separated, the whole drilling machine automatically runs to the next position; then injecting cement slurry into the inner cavity of the pipe pile until the inner cavity is filled with the cement slurry, and finally finishing the installation of the pipe pile;
and (3) connecting the tubular pile connector, the liftable drill bit and the pull rod to install a new tubular pile at a new installation station, and repeating the operation steps 1) to 3) until the tubular pile is drilled into a specified depth.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010303962.XA CN111472688B (en) | 2020-04-17 | 2020-04-17 | Self-drilling tubular string support device and method thereof |
| JP2021573723A JP7103613B2 (en) | 2020-04-17 | 2020-07-08 | Self-drill type pipe column support device and its method |
| PCT/CN2020/100738 WO2021208270A1 (en) | 2020-04-17 | 2020-07-08 | Self-drilling type tubular column supporting device and method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010303962.XA CN111472688B (en) | 2020-04-17 | 2020-04-17 | Self-drilling tubular string support device and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111472688A CN111472688A (en) | 2020-07-31 |
| CN111472688B true CN111472688B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010303962.XA Active CN111472688B (en) | 2020-04-17 | 2020-04-17 | Self-drilling tubular string support device and method thereof |
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| Country | Link |
|---|---|
| JP (1) | JP7103613B2 (en) |
| CN (1) | CN111472688B (en) |
| WO (1) | WO2021208270A1 (en) |
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| CN114293546B (en) * | 2021-12-28 | 2023-06-23 | 山东省公路桥梁建设集团有限公司 | Construction method for supporting and reinforcing broken stone by double pile casings penetrating through karst cave pile foundation |
| CN115341544A (en) * | 2022-08-31 | 2022-11-15 | 湖北固邦岩创科技有限公司 | Detachable spiral press-in piece, tubular pile torsion press-in device and construction method |
| CN117145389B (en) * | 2023-10-31 | 2024-04-12 | 山东港口烟台港集团有限公司 | Foundation impact type drilling device for ocean engineering construction |
| CN118854911B (en) * | 2024-09-25 | 2025-02-18 | 中国建筑第六工程局有限公司 | Petal-shaped openable drilling machine and drilling pile sinking synchronous construction method |
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| US4422806A (en) * | 1981-02-17 | 1983-12-27 | Chevron Research Company | Sliding tension leg tower |
| DE102004042195A1 (en) * | 2004-08-26 | 2006-03-09 | Roman Franz | Ground borer for positioning borings in ground, has lifting device fixed to drill bit and conveying coil, where lifting device enables drill bit with conveying coil to be moved perpendicularly upward over boring rod extension |
| JP4478591B2 (en) * | 2005-02-09 | 2010-06-09 | 株式会社大林組 | Widening excavator and pile mine widening method |
| CN2895696Y (en) * | 2005-11-03 | 2007-05-02 | 南京路鼎搅拌桩特种技术有限公司 | Multifunction automatic diameter-enlarging drill bit |
| JP4887857B2 (en) * | 2006-03-24 | 2012-02-29 | 三菱マテリアル株式会社 | Drilling tools and drilling methods |
| US9033068B2 (en) * | 2007-05-25 | 2015-05-19 | Kwang Ik Lee | Hammer bit |
| JP2013133627A (en) * | 2011-12-26 | 2013-07-08 | Yahagi Construction Co Ltd | Widening and drilling device and drilling method using the same |
| CN102561946B (en) * | 2012-02-01 | 2014-07-23 | 山河智能装备股份有限公司 | Drill while drilling machine and construction method of pile while drilling |
| CN106812464A (en) * | 2015-12-01 | 2017-06-09 | 成都德善能科技有限公司 | A kind of rotary digging static pressure bar |
| CN205638313U (en) * | 2016-03-14 | 2016-10-12 | 中交二航局第四工程有限公司 | Cover bores to salvage handles bury drills device |
| JP6544724B2 (en) * | 2016-11-29 | 2019-07-17 | アビエンジニアリング株式会社 | Pipe anchor burying device |
| CN106401625B (en) * | 2016-11-29 | 2018-07-06 | 湖南科技大学 | Anchor rod device and construction method are crept into a kind of achievable intersection anchoring |
| CN208184664U (en) * | 2018-05-10 | 2018-12-04 | 西安科技大学 | A kind of variable diameter reaming improves the reaming bit of gas extraction concentration |
| CN209082497U (en) * | 2018-09-06 | 2019-07-09 | 福建大力新型建材科技有限公司 | A kind of novel tubular pile for building with High-strength drill bit |
| CN109736715B (en) * | 2019-01-18 | 2024-05-24 | 江苏东合南岩土科技股份有限公司 | Variable-section spiral drilling tool and construction method of variable-section bored pile |
| CN210264529U (en) * | 2019-06-13 | 2020-04-07 | 郑州大学 | A drill bit with adjustable effective diameter |
| CN110700760B (en) * | 2019-10-24 | 2021-07-13 | 福州大学 | A kind of multi-branch anchor system hole reaming equipment and construction method |
-
2020
- 2020-04-17 CN CN202010303962.XA patent/CN111472688B/en active Active
- 2020-07-08 JP JP2021573723A patent/JP7103613B2/en active Active
- 2020-07-08 WO PCT/CN2020/100738 patent/WO2021208270A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JP7103613B2 (en) | 2022-07-20 |
| JP2022527678A (en) | 2022-06-02 |
| WO2021208270A1 (en) | 2021-10-21 |
| CN111472688A (en) | 2020-07-31 |
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