CN105603971A - Drill rod assembly of pile driver - Google Patents
Drill rod assembly of pile driver Download PDFInfo
- Publication number
- CN105603971A CN105603971A CN201610068750.1A CN201610068750A CN105603971A CN 105603971 A CN105603971 A CN 105603971A CN 201610068750 A CN201610068750 A CN 201610068750A CN 105603971 A CN105603971 A CN 105603971A
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- rod body
- pile driver
- drill
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract description 80
- 238000010276 construction Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims description 17
- 238000005267 amalgamation Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000011440 grout Substances 0.000 abstract description 9
- 239000002002 slurry Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 8
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000013019 agitation Methods 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- 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
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- 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
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of construction equipment and in particular relates to a drill rod assembly of a pile driver, aiming at solving the problem of an existing pile driver that a grout spraying area is small and the like. The drill rod assembly comprises a hollow drill rod body, wherein a drill bit pointed-cone-shaped part is arranged at one end of the drill rod body; a spiral drill bit blade, which is arranged in a spiral shape, is arranged at the circumferential outer side of one end, provided with the drill bit pointed-cone-shaped part, of the drill rod body; one end of the spiral drill bit blade extends to the drill bit pointed-cone-shaped part and the other end of the spiral drill bit blade is connected with a grout spraying seat which is arranged at the outer side of the drill rod body in the radial direction; at least one grout spraying hole connected with the inner part of the drill rod body is formed in one side, toward the drill bit pointed-cone-shaped part, of the grout spraying seat; the hole diameter of each grout spraying hole is gradually increased from inside to outside. The drill rod assembly of the pile driver has the advantages that a blocking phenomenon does not easily occur in a grout spraying process; the grout spraying area is large, and slurry is sprayed out in a sector shape; the grout spraying effect is good; the drill rod has good stability when rotating in the peripheral direction, and a swinging phenomenon does not easily occur; the efficiency of drilling the hole by the drill rod is improved and drill rods are not easy to be mutually interfered.
Description
Technical field
The invention belongs to Architectural Equipment technical field, especially relate to a kind of drill pipe for pile driver assembly.
Background technology
At present, the piling machinery using on construction site has two kinds: a kind of swivelling pile driver, and the structure of this piling machine is to utilize the drilling rod hanger bracket of hoist engine pull-up, by drive the pile driving equipment of rod bit to drifter drill for underground pore-forming by unit head; Another kind is jump bit piling machine, and the structure of this piling machine is to utilize hoist engine pull-up jump bit repeatedly to fall, and promotes and realizes piling. Wherein, swivelling pile driver is mainly realized the object to underground drilling rod by the circumferential rotation of drilling rod in the time of piling, in drilling rod boring, adopt grouting drilling rod to be lowered the temperature and to the drilling rod operation of being in the milk, common grouting is mainly whitewashed by the grout hole of drill rod end, but existing drilling rod is carrying out in whitewashing process easily blockage phenomenon, and exist whitewashing area little, the problem that gunite effect is poor, brings great impact so just to construction effect and the progress of piling machine.
The problem existing in order to solve prior art, people have carried out long-term exploration, have proposed solution miscellaneous. For example, Chinese patent literature discloses a kind of bored concrete pile screw lifting slurry mud drilling rod [application number: 201410263015.7], it comprises one section or some sections of hollow drills and coupled tool joint, on the outer surface of hollow drill, be provided with helical blade, between every section of hollow drill of every section of hollow drill, connect with tool joint, the junction of first segment hollow drill and drill bit arranges mouth spray. Conventionally, this helical blade is welded on core drilling, and is arranged on the hypomere of hollow drill, the 1/4-1/2 of the total length that the length of helical blade is hollow drill, and its diameter is less than the diameter of drill bit. In construction, helical blade, with the rotation of drilling rod positive direction, produces lifting force upwards to the clod in mud and the mud of stake hole hypomere etc., drilling rod is produced to downward propulsive force simultaneously.
Such scheme has solved the poor problem of existing drill pipe for pile driver grouting effect to a certain extent, but this scheme still exists: easily blockage phenomenon, exists the little problem of whitewashing area.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of simple and reasonable, the large drill pipe for pile driver assembly of whitewashing area.
For achieving the above object, the present invention has adopted following technical proposal: this drill pipe for pile driver assembly, comprise the drilling rod body of hollow, it is characterized in that, described drilling rod body one end has drill bit tapering, be provided with the augers blade that distributes and arrange in the shape of a spiral that is provided with laterally in one end week in drill bit tapering at drilling rod body, described augers blade one end extends to drill bit tapering, the other end is connected with the whitewashing seat that is radially arranged on the external side of drilling rod, described whitewashing seat has at least one and the inner gunniting hole being connected of drilling rod body towards a side in drill bit tapering, and it is large that the aperture of described gunniting hole becomes from inside to outside gradually. the diameter of the gunniting hole here becomes large from inside to outside gradually, and the slurries of the ejection that can make are like this fan-shaped distribution, along with drilling rod body circumferentially rotates and makes slurries arrive fast boring everywhere.
In above-mentioned drill pipe for pile driver assembly, in described whitewashing seat, be provided with along the axially extended interface channel of whitewashing seat, and described interface channel one end is connected with drilling rod body inside, the other end is connected with gunniting hole.
In above-mentioned drill pipe for pile driver assembly, described augers blade flushes and is connected with the side that whitewashing seat is provided with gunniting hole, and the opposite side of described whitewashing seat has the stop part that exceeds augers blade and be positioned at augers blade tip, described stop part is connected with the rake that is tilted to setting, and described rake is connected with and is arranged on the whitewashing seat curved portions away from augers blade one side. This structure has not only improved the efficiency of boring, also makes slurry agitation better effects if simultaneously.
In above-mentioned drill pipe for pile driver assembly, described gunniting hole is elongated, and described gunniting hole comprises the isometrical bar hole being connected with interface channel, described isometrical bar hole is connected with reducing bar hole, and diameter to the diameter of the other end of one end of being connected with isometrical bar hole of described reducing bar hole becomes large gradually. While making like this drilling rod body circumferentially rotate, gunniting hole is difficult for stopping up.
In above-mentioned drill pipe for pile driver assembly, be connected with the drill bit tapering width of the width diameter other end of one end of described augers blade becomes large gradually.
In above-mentioned drill pipe for pile driver assembly, described augers blade is all shaped on drilling rod body with whitewashing seat.
In above-mentioned drill pipe for pile driver assembly, one end that described drilling rod body has drill bit tapering is provided with some stirring vane groups that are positioned at augers blade top, and described stirring vane group from up to down shifts to install successively.
In above-mentioned drill pipe for pile driver assembly, each group stirring vane group include be separately positioned on drilling rod body both sides all with the vertically disposed stirring vane of drilling rod body, described stirring vane is obliquely installed towards different directions respectively.
In above-mentioned drill pipe for pile driver assembly, on described drilling rod body, be arranged with respectively some split type annular rings, between described drilling rod body and split type annular ring, be provided with the ring lining cover being formed by some arc inner lining body circumferential abutment, described drilling rod body and ring lining cover are circumferentially rotatedly connected, described ring lining cover comprises and is sheathed on drilling rod body week lining body laterally, thereby and described lining body two ends extend to respectively outside, split type annular ring end and form with split type annular ring end and lean and be positioned at drilling rod body week extension body to the periphery.
In above-mentioned drill pipe for pile driver assembly, described split type annular ring is circumferentially surrounded and forms by some arc bodies, described arc body week is provided with connection strap laterally, and adjacent two connection straps are fixedly linked by construction bolt, and the split type annular ring on adjacent two drilling rod bodies is positioned in same level, and the connection strap of the split type annular ring on adjacent two drilling rod bodies outside is respectively equipped with mounting bar, the end face of each arc body all with the end face of an adjacent arc body mutually against setting, described construction bolt is connected with connection strap by construction bolt through mounting bar and described mounting bar. be that split type annular ring on adjacent two drilling rod bodies is connected, improved like this stability when drilling rod body circumferentially rotates, drilling rod body is not prone to dancing, is difficult for phase mutual interference between drilling rod.
Compared with prior art, the advantage of this drill pipe for pile driver assembly is: simple and reasonable, in whitewashing process, be difficult for blockage phenomenon, and exist whitewashing area large, can make slurries be fan-shaped ejection, gunite effect is good, good stability when drilling rod circumferentially rotates, be not prone to dancing, improved the efficiency of drilling rod boring, between drilling rod, be difficult for phase mutual interference.
Brief description of the drawings
Fig. 1 is stereogram of the present invention.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the structural representation at another visual angle of the present invention.
Fig. 4 is the structural representation under drilling rod body use state in the present invention.
Fig. 5 is the explosive view of split type annular ring and ring lining cover in the present invention.
In figure, drilling rod body 1, drill bit tapering 2, augers blade 3, whitewashing seat 4, gunniting hole 41, isometrical bar hole 411, reducing bar hole 412, interface channel 42, stop part 43, rake 44, curved portions 45, stirring vane 5, split type annular ring 6, arc body 61, connection strap 62, construction bolt 63, mounting bar 64, ring lining cover 7, arc inner lining body 71, lining body 72, extension body 73.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As Figure 1-5, this drill pipe for pile driver assembly, comprise the drilling rod body 1 of hollow, drilling rod body 1 one end has drill bit tapering 2, be provided with the augers blade 3 that distributes and arrange in the shape of a spiral that is provided with laterally in one end week in drill bit tapering 2 at drilling rod body 1, augers blade 3 one end extend to drill bit tapering 2, the other end is connected with the whitewashing seat 4 that is radially arranged on drilling rod body 1 outside, whitewashing seat 4 has at least one and the inner gunniting hole 41 being connected of drilling rod body 1 towards a side in drill bit tapering 2, and it is large that the aperture of gunniting hole 41 becomes from inside to outside gradually, the diameter of the gunniting hole 41 here becomes large from inside to outside gradually, the slurries of the ejection that can make are like this fan-shaped distribution, along with drilling rod body 1 circumferentially rotates and makes slurries arrive fast boring everywhere.
Particularly, in whitewashing seat 4 in the present embodiment, be provided with along whitewashing seat 4 axially extended interface channels 42, and interface channel 42 one end are connected with drilling rod body 1 inside, the other end is connected with gunniting hole 41, wherein, the augers blade 3 here flushes and is connected with whitewashing seat 4 sides that are provided with gunniting hole 41, and the opposite side of whitewashing seat 4 has the stop part 43 that exceeds augers blade 3 and be positioned at augers blade 3 ends, stop part 43 is connected with the rake 44 that is tilted to setting, and rake 44 is connected with and is arranged on whitewashing seat 4 curved portions 45 away from augers blade 3 one sides, so not only improve the efficiency of boring, also make slurry agitation better effects if simultaneously. wherein, the gunniting hole 41 is here elongated, and gunniting hole 41 comprises the isometrical bar hole 411 being connected with interface channel 42, isometrical bar hole 411 is connected with reducing bar hole 412, and diameter to the diameter of the other end of one end of being connected with isometrical bar hole 411 of reducing bar hole 412 becomes large gradually. while making like this drilling rod body circumferentially rotate, gunniting hole is difficult for stopping up.
Further, be connected with drill bit tapering 2 width of the width diameter other end of one end of the augers blade 3 in the present embodiment becomes greatly gradually, and wherein, augers blade 3 is all shaped on drilling rod body 1 with whitewashing seat 4. Preferably, one end that the drilling rod body 1 here has drill bit tapering 2 is provided with some stirring vane groups that are positioned at augers blade 3 tops, and stirring vane group from up to down shifts to install successively. Wherein, each group stirring vane group here include be separately positioned on drilling rod body 1 both sides all with the vertically disposed stirring vane 5 of drilling rod body 1, stirring vane 5 is obliquely installed towards different directions respectively.
Further, on the drilling rod body 1 here, be arranged with respectively some split type annular rings 6, between drilling rod body 1 and split type annular ring 6, be provided with the ring lining cover 7 being formed by some arc inner lining body 71 circumferential abutment, drilling rod body 1 is circumferentially rotatedly connected with ring lining cover 7, ring lining cover 7 comprises and is sheathed on drilling rod body 1 week lining body 72 laterally, and thereby lining body 72 two ends extend to respectively split type annular ring 6 ends outsides and form and lean with split type annular ring 6 ends and be positioned at drilling rod body 1 week extension body 73 to the periphery, wherein, the split type annular ring 6 here is circumferentially surrounded and forms by some arc bodies 61, arc body is provided with connection strap 62 for 61 weeks laterally, and adjacent two connection straps 62 are fixedly linked by construction bolt 63, and the split type annular ring 6 on adjacent two drilling rod bodies 1 is positioned in same level, and connection strap 62 outsides of the split type annular ring 6 on adjacent two drilling rod bodies 1 are respectively equipped with mounting bar 64, the end face of each arc body 61 all with the end face of an adjacent arc body 61 mutually against setting, construction bolt 63 is connected with connection strap 62 by construction bolt 63 through mounting bar 64 and mounting bar 64, be that split type annular ring on adjacent two drilling rod bodies 16 is connected, improve like this stability when drilling rod body 1 circumferentially rotates, drilling rod body 1 is not prone to dancing, between drilling rod body 1, be difficult for phase mutual interference.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit. Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used drilling rod body 1, drill bit tapering 2, augers blade 3, whitewashing seat 4, gunniting hole 41, isometrical bar hole 411, reducing bar hole 412, interface channel 42, stop part 43, rake 44, curved portions 45, stirring vane 5, split type annular ring 6, arc body 61, connection strap 62, construction bolt 63, mounting bar 64, ring lining cover 7, arc inner lining body 71, lining body 72 herein, extended the terms such as body 73, do not got rid of the possibility that uses other term. Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (10)
1. a drill pipe for pile driver assembly, comprises the drilling rod body (1) of hollow, and its feature existsIn, described drilling rod body (1) one end has drill bit tapering (2), in drilling rod body (1)Be provided with the spiral shell that distributes and arrange in the shape of a spiral that is provided with laterally in one end week in drill bit tapering (2)Revolve bit blades (3), described augers blade (3) one end extends to drill bit pointed conePortion (2), the other end and whitewashing seat (4) phase that is radially arranged on drilling rod body (1) outsideConnect, described whitewashing seat (4) has at least one towards a side of drill bit tapering (2)The individual gunniting hole (41) being connected with drilling rod body (1) inside, and described gunniting hole (41)Aperture become gradually from inside to outside large.
2. drill pipe for pile driver assembly according to claim 1, is characterized in that, instituteIn the whitewashing seat (4) of stating, be provided with along whitewashing seat (4) axially extended interface channel (42),And described interface channel (42) one end is connected with drilling rod body (1) inside, the other endBe connected with gunniting hole (41).
3. drill pipe for pile driver assembly according to claim 2, is characterized in that, instituteThe augers blade (3) of stating and whitewashing seat (4) are provided with a side of gunniting hole (41)Flush and be connected, and the opposite side of described whitewashing seat (4) has the auger of exceeding head lobeSheet (3) and be positioned at the stop part (43) of augers blade (3) end, described resistanceStopper (43) is connected with the rake (44) that is tilted to setting, and described rake(44) be connected with and be arranged on whitewashing seat (4) away from augers blade (3) one sidesCurved portions (45).
4. drill pipe for pile driver assembly according to claim 3, is characterized in that, instituteThe gunniting hole (41) of stating is elongated, and described gunniting hole (41) comprises and is connectedThe isometrical bar hole (411) that passage (42) is connected, described isometrical bar hole (411)Be connected with reducing bar hole (412), and described reducing bar hole (412) with isometricalDiameter to the diameter of the other end of connected one end, shape hole (411) becomes large gradually.
5. according to the drill pipe for pile driver assembly described in claim 1 or 2 or 3 or 4, itsBe characterised in that, described augers blade (3) is connected one with drill bit tapering (2)The width of the width diameter other end of end becomes large gradually.
6. drill pipe for pile driver assembly according to claim 5, is characterized in that, instituteThe augers blade (3) of stating is all shaped in drilling rod body (1) with whitewashing seat (4)On.
7. drill pipe for pile driver assembly according to claim 5, is characterized in that, instituteOne end that the drilling rod body (1) of stating has drill bit tapering (2) is provided with some spirals that are positioned atThe stirring vane group of bit blades (3) top, and described stirring vane group is from up to downShift to install successively.
8. drill pipe for pile driver assembly according to claim 7, is characterized in that, everyOne group of stirring vane group include be separately positioned on drilling rod body (1) both sides all with drilling rod body(1) vertically disposed stirring vane (5), described stirring vane (5) respectively towardsDifferent directions is obliquely installed.
9. drill pipe for pile driver assembly according to claim 5, is characterized in that, instituteOn the drilling rod body (1) of stating, be arranged with respectively some split type annular rings (6), described brillBetween the body of rod (1) and split type annular ring (6), be provided with by some arc inner lining bodies (71)The ring lining cover (7) that circumferential abutment forms, described drilling rod body (1) and ring liningCover (7) is circumferentially rotatedly connected, and described ring lining cover (7) comprises and is sheathed on drilling rodThe all lining bodies (72) laterally of body (1), and described lining body (72) two ends are dividedDo not extend to split type annular ring (6) thereby the formation of outside, end and split type annular ring (6)End leans and is positioned at drilling rod body (1) week extension body (73) to the periphery.
10. drill pipe for pile driver assembly according to claim 9, is characterized in that, instituteThe split type annular ring (6) of stating is circumferentially surrounded and forms by some arc bodies (61), described inArc body (61) week be provided with laterally connection strap (62), and adjacent two connection straps (62)Be fixedly linked by construction bolt (63), and amalgamation on adjacent two drilling rod bodies (1)Formula annular ring (6) is positioned in same level, and on adjacent two drilling rod bodies (1)Connection strap (62) outside of split type annular ring (6) is respectively equipped with mounting bar (64),The end face of each arc body (61) all with the end face phase of an adjacent arc body (61)Mutually against setting, described construction bolt (63) through mounting bar (64) and described inMounting bar (64) be connected with connection strap (62) by construction bolt (63).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068750.1A CN105603971B (en) | 2016-01-30 | 2016-01-30 | Drill pipe for pile driver component |
| PCT/CN2016/000491 WO2017127955A1 (en) | 2016-01-30 | 2016-08-29 | Drill rod assembly of pile driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068750.1A CN105603971B (en) | 2016-01-30 | 2016-01-30 | Drill pipe for pile driver component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105603971A true CN105603971A (en) | 2016-05-25 |
| CN105603971B CN105603971B (en) | 2018-04-03 |
Family
ID=55984278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610068750.1A Active CN105603971B (en) | 2016-01-30 | 2016-01-30 | Drill pipe for pile driver component |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105603971B (en) |
| WO (1) | WO2017127955A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761473A (en) * | 2016-12-29 | 2017-05-31 | 上海广大基础工程有限公司 | A kind of drilling rod |
| CN106869114A (en) * | 2017-03-06 | 2017-06-20 | 李海兰 | A kind of arc ground pile-forming equipment of municipal works |
| WO2017127955A1 (en) * | 2016-01-30 | 2017-08-03 | 周兆弟 | Drill rod assembly of pile driver |
| CN112012659A (en) * | 2019-05-28 | 2020-12-01 | 周兆弟 | Pile foundation drill bit structure and drilling method thereof |
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| CN107939296B (en) * | 2017-12-26 | 2023-08-04 | 上海广大基础工程有限公司 | Drilling tool with switchable spraying opening |
| CN109577865A (en) * | 2018-12-28 | 2019-04-05 | 青岛理工大学 | Double-high-pressure mixing and spraying pile drill bit and using method thereof |
| CN114753359A (en) * | 2022-05-10 | 2022-07-15 | 浙江坤德创新岩土工程有限公司 | A whitewashing digs and cuts structure for wet stirring stake construction drilling tool that spouts of major diameter |
| CN118008137B (en) * | 2024-04-08 | 2024-06-18 | 湖南衡利重工机械有限公司 | Multifunctional hydraulic submersible drilling photovoltaic pile driver |
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| CN203411994U (en) * | 2013-08-12 | 2014-01-29 | 中国建筑第四工程局有限公司 | Support pile basement outer wall structure |
| CN103883260A (en) * | 2014-02-18 | 2014-06-25 | 周兆弟 | Triaxial triangular cement mixing drill stem and construction method |
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| WO2017127955A1 (en) * | 2016-01-30 | 2017-08-03 | 周兆弟 | Drill rod assembly of pile driver |
| CN106761473A (en) * | 2016-12-29 | 2017-05-31 | 上海广大基础工程有限公司 | A kind of drilling rod |
| CN106869114A (en) * | 2017-03-06 | 2017-06-20 | 李海兰 | A kind of arc ground pile-forming equipment of municipal works |
| CN106869114B (en) * | 2017-03-06 | 2018-12-18 | 杭州富阳锦丰纸业有限公司 | A kind of arc ground pile-forming equipment of municipal works |
| CN112012659A (en) * | 2019-05-28 | 2020-12-01 | 周兆弟 | Pile foundation drill bit structure and drilling method thereof |
Also Published As
| Publication number | Publication date |
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| CN105603971B (en) | 2018-04-03 |
| WO2017127955A1 (en) | 2017-08-03 |
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