CN112982400A - Pile casing follow-up type drilling bored concrete pile drilling tool - Google Patents
Pile casing follow-up type drilling bored concrete pile drilling tool Download PDFInfo
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- CN112982400A CN112982400A CN202110215656.5A CN202110215656A CN112982400A CN 112982400 A CN112982400 A CN 112982400A CN 202110215656 A CN202110215656 A CN 202110215656A CN 112982400 A CN112982400 A CN 112982400A
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- 238000005553 drilling Methods 0.000 title claims abstract description 69
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 10
- 239000002689 soil Substances 0.000 description 7
- 239000011435 rock Substances 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 239000012634 fragment Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 208000016509 ear folding Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/68—Mould-pipes or other moulds for making bulkheads or elements thereof
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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
- E21B12/00—Accessories for drilling tools
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
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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
-
- 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
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of rotary drilling tool equipment, in particular to a pile casing follow-up type rotary drilling bored pile drilling tool, which aims to solve the problems that when the depth of rotary drilling is larger, a pile casing with matched height needs to be adopted, so that the working efficiency is not high and the consumption of manpower and material resources is large due to the operation process of erecting the pile casing by drilling for multiple times; the auxiliary protective cylinder comprises two semicircular protective cylinder main bodies, one side of each protective cylinder main body is connected through a rotating shaft in a rotating mode, the other side of each protective cylinder main body is outwards bent to form a folding lug, and the folding lug penetrates through a locking screw rod and a locking nut matched with the locking screw rod.
Description
Technical Field
The invention relates to the technical field of rotary drilling tool equipment, in particular to a pile casing follow-up type rotary drilling bored concrete pile drilling tool.
Background
With the need of urban development, a large number of high-rise and super high-rise buildings are newly built, deep foundation pit excavation needs to be carried out on a proposed site, and effective supporting needs to be carried out on the side wall of the foundation pit. The foundation pit support generally adopts a method of drilling and pouring piles, a circle of support piles are formed around the foundation pit, and when the bedrock of the site to be built is buried deeply and the depth of the foundation pit support piles into the bedrock is large, the problems of difficult hole forming, inclined holes and the like in the bedrock often occur.
The existing Chinese patent with publication number CN204703150U discloses a construction device for a foundation pit supporting bored pile, which comprises a rotary drilling tool for drilling a soil layer hole, a pile casing embedded in the soil layer hole, a vibration hammer for embedding the pile casing in the soil layer hole or pulling the pile casing out of the soil layer hole, a down-the-hole hammer for drilling a foundation rock hole in a foundation rock layer, an air compressor for supplying air into the hole and a rotary drilling rig with cutting teeth for cleaning the hole filled with mud. When the hole is formed, a rotary drilling tool is adopted for hole opening, and the problem of hole collapse and hole shrinkage can be prevented by utilizing the protective cylinder to protect the wall; utilize down-the-hole hammer cooperation air compressor machine air supply, have superstrong broken rock ability, when hard rock drills, one bores to the end, and at last, adopt to dig the rig soon and clear the hole for pore-forming speed accelerates greatly, accelerates the construction progress, avoids the pore-forming in-process to produce a large amount of mud waste residues again, realizes green construction.
However, in some construction conditions, the depth of the rotary drilling hole is large, and the protective cylinder with the matched height needs to be adopted, so that the manufacturing cost of the matched equipment can be increased, and the working efficiency is not high due to the operation process of erecting the protective cylinder by opening the hole for many times.
Disclosure of Invention
Therefore, the invention aims to provide a pile casing follow-up type rotary drilling bored concrete pile drilling tool, which solves the problems of low working efficiency and high manpower and material resource consumption caused by the operation process of drilling and erecting a pile casing for multiple times because a pile casing with a matched height needs to be adopted when the depth of a rotary drilling hole is large.
The technical purpose of the invention is realized by the following technical scheme:
a pile casing follow-up type rotary drilling bored concrete pile drilling tool comprises a main casing, wherein a shaft seat device is arranged in the main casing, a driving shaft penetrates through the shaft seat device, a drill bit is arranged at the tail end of the driving shaft, a plurality of auxiliary casing are arranged on one side, away from the drill bit, of the main casing, connecting devices are arranged between the main casing and the auxiliary casing and between adjacent auxiliary casings, and an auxiliary shaft seat device matched with the driving shaft is arranged in any auxiliary casing;
the auxiliary protective cylinder comprises two semicircular protective cylinder main bodies, one side of each protective cylinder main body is connected through a rotating shaft in a rotating mode, the other side of each protective cylinder main body is outwards bent to form a folding lug, and the folding lug penetrates through a locking screw rod and a locking nut matched with the locking screw rod.
Optionally, connecting device is including setting up in the annular slab that mainly protects a section of thick bamboo, supplementary section of thick bamboo link, even array has the slot on the annular slab, wear to be equipped with the main first inserted block that protects a section of thick bamboo and supplementary section of thick bamboo and adjacent supplementary section of thick bamboo that protects of fixed connection in the slot, and the slot intercommunication has the groove of stepping down along the radial setting of annular slab, the inslot that steps down is equipped with the spring, spring coupling has the second inserted block, be equipped with on the first inserted block with second inserted block complex jack.
Optionally, the end of the second insert block on the side away from the spring is provided with a slope facing the insertion direction of the first insert block.
Optionally, the second insert block is further connected with a pull rod penetrating through the spring, the pull rod extends out of the annular plate, and the end of the pull rod is provided with a pull ring.
Optionally, an external expansion protection cylinder detachably connected to the main protection cylinder is arranged on the main protection cylinder, and the outer diameter of the external expansion protection cylinder is larger than that of the main protection cylinder.
Optionally, a reinforcing rib is arranged between the inner wall of the outer expanding casing and the outer wall of the main casing.
Optionally, the bottom end of the outer expanding casing is 5-20mm lower than the bottom end of the main casing.
Optionally, the bottom end of the outer expanding cylinder is annularly arrayed with a plurality of teeth.
The invention has the beneficial effects that:
1. according to the pile casing follow-up type rotary drilling bored concrete pile drilling tool, a drilling tool is adopted for hole guiding in advance, then a main pile casing is downwards put into a soil layer from an orifice through a vibration hammer, and then a driving shaft drives a drill bit to rotate under the guiding of a shaft seat device so as to complete the drilling operation; along with the descending of the driving shaft, the auxiliary protecting cylinder is continuously added at the top of the main protecting cylinder to improve the effective length of the main protecting cylinder, and meanwhile, the auxiliary shaft seat device can carry out limit protection on the driving shaft, so that the protecting cylinder does not need to be replaced in the construction process, the protection performance can be ensured in the construction process, rock stratum fragments are prevented from splashing around to damage a drilling tool, and the use reliability is improved; in addition, the structure of the auxiliary pile casing can adjust the radius of the auxiliary pile casing, on one hand, the auxiliary pile casing is matched with the main pile casing with different calibers, and on the other hand, the auxiliary pile casing is matched with the orifice so as to facilitate construction.
2. According to the pile casing follow-up type rotary drilling bored concrete pile drilling tool, the connecting device is arranged, and compared with the mode that the drilling tool is fixed through the matching of a plurality of nuts and the screw rod, the assembling process is greatly simplified, and the working efficiency is effectively improved.
3. According to the pile casing follow-up type rotary drilling bored concrete pile drilling tool, when the first insertion block is inserted, the second insertion block can be automatically driven along the inclined plane, other operations are not needed, and the drilling tool is convenient and rapid.
4. According to the pile casing follow-up type rotary drilling bored concrete pile drilling tool, when the auxiliary pile casing needs to be disassembled, the pull ring is held by hand, the pull rod applies pulling force to the second insertion block, the spring contracts, the second insertion block is retracted into the abdicating groove, the first insertion block is pulled out, and limiting is relieved.
5. According to the pile casing follow-up type rotary drilling bored concrete pile drilling tool, when rotary holes with different hole diameters need to be drilled in a rotary mode, the purpose that one set of drilling tool drills hole piles with different hole diameters can be achieved only by replacing the outer expanding pile casing with the corresponding hole diameter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a pile casing follow-up type rotary drilling bored pile drilling tool according to an embodiment of the present invention;
fig. 2 is an enlarged schematic view of fig. 1.
Description of reference numerals:
1. a main protective cylinder; 2. a shaft seat device; 21. an auxiliary shaft seat device; 3. a drive shaft; 4. a drill bit; 5. an auxiliary protecting cylinder; 51. a casing main body; 52. ear folding; 53. locking the screw rod; 54. locking the nut; 6. a connecting device; 61. an annular plate; 62. a slot; 63. a yielding groove; 64. a spring; 65. a first insert block; 66. a second insert block; 67. a jack; 68. a pull rod; 69. a pull ring; 7. an external expanding protective cylinder; 8. reinforcing ribs; 9. and (4) teeth.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
A pile casing follow-up type rotary drilling bored concrete pile drilling tool comprises a main pile casing 1, wherein a shaft seat device 2 is installed in the main pile casing 1, a driving shaft 3 penetrates through the shaft seat device 2, and a drill bit 4 is arranged at the tail end of the driving shaft 3. In order to solve the problems that when the drilling depth is large, a main protective cylinder 1 with matched height needs to be adopted, so that the working efficiency is not high and the consumption of manpower and material resources is large due to the operation process of erecting the main protective cylinder 1 by opening holes for multiple times, a plurality of auxiliary protective cylinders 5 are arranged on one side, away from a drill bit 4, of the main protective cylinder 1, connecting devices 6 are arranged between the main protective cylinder 1 and the auxiliary protective cylinders 5 and between adjacent auxiliary protective cylinders 5, and auxiliary shaft seat devices 21 matched with a driving shaft 3 are arranged in any auxiliary protective cylinder 5; specifically, the auxiliary casing 5 includes two semicircular casing main bodies 51, one side of each casing main body 51 is rotatably connected through a rotating shaft, the other side of each casing main body 51 is bent outwards to form a folding lug 52, and a locking screw 53 and a locking nut 54 matched with the locking screw 53 are arranged through the folding lug 52. Therefore, firstly, a drilling tool is adopted to guide holes in advance, then the main casing 1 is downwards put into a soil layer from an orifice through a vibration hammer, and then the driving shaft 3 drives the drill bit 4 to rotate under the guidance of the shaft seat device 2 so as to complete the punching operation; along with the descending of the driving shaft 3, the auxiliary protecting cylinder 5 is continuously additionally arranged at the top of the main protecting cylinder 1 to improve the effective length of the main protecting cylinder, and meanwhile, the auxiliary shaft seat device 21 can limit and protect the driving shaft 3, so that the protecting cylinder does not need to be replaced in the construction process, the protection performance can be ensured in the construction process, rock stratum fragments are prevented from splashing around to damage a drilling tool, and the use reliability is improved; in addition, the structure of the auxiliary pile casing 5 can adjust the radius thereof, and on one hand, the auxiliary pile casing is matched with the main pile casing 1 with different calibers, and on the other hand, the auxiliary pile casing is matched with the orifice so as to facilitate construction.
As shown in fig. 1 and 2, the connecting device 6 includes an annular plate 61 disposed at the connecting end of the main casing 1 and the auxiliary casing 5, slots 62 are uniformly arrayed on the annular plate 61, a first insert 65 fixedly connecting the main casing 1 and the auxiliary casing 5 and the adjacent auxiliary casing 5 is disposed in the slots 62 in a penetrating manner, the slots 62 are communicated with a yielding groove 63 radially disposed along the annular plate 61, a spring 64 is disposed in the yielding groove 63, the spring 64 is connected with a second insert 66, and a jack 67 matched with the second insert 66 is disposed on the first insert 65. This structure compares and fixes through the cooperation of a plurality of nuts with the screw rod, has simplified assembly process greatly, has effectively improved work efficiency.
As shown in fig. 2, an inclined surface facing the insertion direction of the first insertion block 65 is disposed at an end of the second insertion block 66 away from the spring 64, so that when the first insertion block 65 is inserted, the second insertion block 66 can be automatically driven along the inclined surface, and the operation is not required.
As shown in fig. 2, the second insertion block 66 is further connected with a pull rod 68 penetrating the spring 64, the pull rod 68 extends out of the annular plate 61, and the end portion of the pull rod 68 is provided with a pull ring 69, so that when the auxiliary casing 5 needs to be disassembled, the pull ring 69 is held by hand, a pulling force is applied to the second insertion block 66 through the pull rod 68, the spring 64 contracts, and at this time, the second insertion block 66 is retracted into the abdicating groove 63, so that the first insertion block 65 is pulled out, and the limitation is released.
As shown in fig. 1, the main casing 1 is provided with a detachably connected outer expanding casing 7, and the outer diameter of the outer expanding casing 7 is larger than that of the main casing 1. Therefore, when the rotary holes with different apertures need to be drilled in a rotary mode, the purpose that one set of drilling tool drills the hole piles with different apertures can be achieved only by replacing the outer expanding protection barrel 7 with the corresponding aperture. Specifically, a reinforcing rib 8 is arranged between the inner wall of the outer expanding protection cylinder 7 and the outer wall of the main protection cylinder 1, the bottom end of the outer expanding protection cylinder 7 is 5-20mm lower than the bottom end of the main protection cylinder 1, and a plurality of teeth 9 are circumferentially arrayed at the bottom end of the outer expanding protection cylinder 7.
The working principle of the pile drilling tool of the pile casing follow-up rotary drilling bored concrete pile is as follows: firstly, a drilling tool is adopted to guide holes in advance, then the main casing 1 is downwards put into a soil layer from an orifice through a vibration hammer, and then a driving shaft 3 drives a drill bit 4 to rotate under the guidance of a shaft seat device 2 so as to complete the punching operation; along with the descending of the driving shaft 3, the auxiliary protecting cylinder 5 is continuously added at the top of the main protecting cylinder 1 to improve the effective length of the main protecting cylinder, and meanwhile, the auxiliary shaft seat device 21 can limit and protect the driving shaft 3;
when the auxiliary pile casing 5 is installed, the radius is firstly adjusted through the two semicircular annular pile casing main bodies 51, the locking screw 53 is matched with the locking nut 54 for locking, then the locking screw abuts against the annular plate 61 at the connecting end of the main pile casing 1 and the auxiliary pile casing 5, the first inserting block 65 is embedded into the slot 62, and the laying and fixing of the auxiliary pile casing 5 are realized through the matching of the spring 64 and the second inserting block 66.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A pile casing follow-up type rotary drilling bored concrete pile drilling tool comprises a main casing (1), wherein a shaft seat device (2) is arranged in the main casing (1), a driving shaft (3) penetrates through the shaft seat device (2), and a drill bit (4) is arranged at the tail end of the driving shaft (3), and the pile casing drilling tool is characterized in that a plurality of auxiliary casing (5) are arranged on one side, away from the drill bit (4), of the main casing (1), connecting devices (6) are arranged between the main casing (1) and the auxiliary casing (5) and between adjacent auxiliary casings (5), and an auxiliary shaft seat device (21) matched with the driving shaft (3) is arranged in any auxiliary casing (5);
the auxiliary protective cylinder (5) comprises two semicircular protective cylinder main bodies (51), one side of each protective cylinder main body (51) is rotatably connected through a rotating shaft, the other side of each protective cylinder main body (51) is outwards bent to form a folding lug (52), and the folding lug (52) is provided with a locking screw rod (53) and a locking nut (54) matched with the locking screw rod (53).
2. The pile casing follow-up type rotary drilling bored concrete pile drilling tool according to claim 1, characterized in that, connecting device (6) is including setting up in annular slab (61) of main pile casing (1), supplementary pile casing (5) link, even array has slot (62) on annular slab (61), wear to be equipped with the first inserted block (65) of main pile casing (1) of fixed connection and supplementary pile casing (5) and adjacent supplementary pile casing (5) in slot (62), and slot (62) intercommunication has along annular slab (61) radial setting step down groove (63), be equipped with spring (64) in the groove of stepping down (63), spring (64) are connected with second inserted block (66), be equipped with on first inserted block (65) with second inserted block (66) complex jack (67).
3. The pile casing follow-up type rotary drilling bored pile drilling tool according to claim 2, wherein an end of the second insert block (66) on a side away from the spring (64) is provided with a slope facing an insertion direction of the first insert block (65).
4. The pile casing follow-up type rotary drilling bored concrete pile drilling tool according to claim 3, wherein the second insert block (66) is further connected with a pull rod (68) arranged in the spring (64) in a penetrating manner, the pull rod (68) extends out of the annular plate (61) and the end part of the pull rod is provided with a pull ring (69).
5. The pile casing follow-up type rotary drilling bored concrete pile drilling tool according to claim 1, characterized in that an outer expanding pile casing (7) detachably connected is arranged on the main pile casing (1), and the outer diameter of the outer expanding pile casing (7) is larger than that of the main pile casing (1).
6. The pile casing follow-up type rotary drilling bored concrete pile drilling tool according to claim 5, characterized in that a reinforcing rib (8) is arranged between the inner wall of the outer expanding pile casing (7) and the outer wall of the main pile casing (1).
7. The pile casing follow-up type rotary drilling bored concrete pile drilling tool according to claim 6, wherein the bottom end of the outer expanding pile casing (7) is 5-20mm lower than the bottom end of the main pile casing (1).
8. The pile casing follow-up type rotary drilling bored concrete pile drilling tool according to claim 7, wherein the bottom end of the outer expanding pile casing (7) is annularly arrayed with a plurality of teeth (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110215656.5A CN112982400A (en) | 2021-02-26 | 2021-02-26 | Pile casing follow-up type drilling bored concrete pile drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110215656.5A CN112982400A (en) | 2021-02-26 | 2021-02-26 | Pile casing follow-up type drilling bored concrete pile drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112982400A true CN112982400A (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110215656.5A Pending CN112982400A (en) | 2021-02-26 | 2021-02-26 | Pile casing follow-up type drilling bored concrete pile drilling tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN112982400A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164824A (en) * | 2021-12-10 | 2022-03-11 | 中国建筑第四工程局有限公司 | Long steel pile casing cast-in-place pile for micro-disturbance of peripheral stratum and application |
| CN114960641A (en) * | 2022-05-30 | 2022-08-30 | 中铁二十三局集团有限公司 | Foundation pile construction method based on steel casing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563104A (en) * | 2015-01-19 | 2015-04-29 | 宁波市坤德创新岩土工程有限公司 | Linkage type wall protecting device for pile driving drilling machine and construction method for using linkage type wall protecting device for pile driving drilling machine |
| CN105735251A (en) * | 2016-01-26 | 2016-07-06 | 赵立财 | Bridge pile foundation rotary excavating drilling rig cutting type whole guard barrel follow-up pile forming construction method and system |
| CN107653878A (en) * | 2016-07-23 | 2018-02-02 | 安吉正源塑木装饰材料有限公司 | Cast-in-situ bored pile is reusable to be longitudinally separated formula steel pile casting construction |
| CN110374505A (en) * | 2019-07-25 | 2019-10-25 | 温州林嘉建筑有限公司 | A kind of drilling machine and bored pile construction method |
-
2021
- 2021-02-26 CN CN202110215656.5A patent/CN112982400A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563104A (en) * | 2015-01-19 | 2015-04-29 | 宁波市坤德创新岩土工程有限公司 | Linkage type wall protecting device for pile driving drilling machine and construction method for using linkage type wall protecting device for pile driving drilling machine |
| CN105735251A (en) * | 2016-01-26 | 2016-07-06 | 赵立财 | Bridge pile foundation rotary excavating drilling rig cutting type whole guard barrel follow-up pile forming construction method and system |
| CN107653878A (en) * | 2016-07-23 | 2018-02-02 | 安吉正源塑木装饰材料有限公司 | Cast-in-situ bored pile is reusable to be longitudinally separated formula steel pile casting construction |
| CN110374505A (en) * | 2019-07-25 | 2019-10-25 | 温州林嘉建筑有限公司 | A kind of drilling machine and bored pile construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164824A (en) * | 2021-12-10 | 2022-03-11 | 中国建筑第四工程局有限公司 | Long steel pile casing cast-in-place pile for micro-disturbance of peripheral stratum and application |
| CN114960641A (en) * | 2022-05-30 | 2022-08-30 | 中铁二十三局集团有限公司 | Foundation pile construction method based on steel casing |
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Application publication date: 20210618 |