CN110952920A - Drilling device for square hole - Google Patents
Drilling device for square hole Download PDFInfo
- Publication number
- CN110952920A CN110952920A CN201911350152.3A CN201911350152A CN110952920A CN 110952920 A CN110952920 A CN 110952920A CN 201911350152 A CN201911350152 A CN 201911350152A CN 110952920 A CN110952920 A CN 110952920A
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- Prior art keywords
- drilling
- square
- reaming
- main
- drilling device
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- 238000005553 drilling Methods 0.000 title claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 210000000078 claw Anatomy 0.000 claims description 35
- 238000005527 soil sampling Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002689 soil Substances 0.000 abstract description 38
- 230000006872 improvement Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B7/001—Drilling a non circular hole
-
- 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
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
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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
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a drilling device for a square hole, relates to the technical field of drilling equipment for the square hole, and is mainly used for solving the problems that the existing square hole is mainly excavated by manpower and has low efficiency. The main structure is as follows: the soil drilling mechanism comprises a main drilling shaft which is vertically arranged and a reaming crawler belt which is arranged around the lower part of the main drilling shaft in a square shape; the lower extreme of main drill shaft is connected with the drill bit, the lower part edge of reaming track is equipped with a plurality of reaming teeth. The drilling device for the square hole, provided by the invention, is ingenious in structure, can automatically drill the square hole without manually digging the hole, and improves the hole digging efficiency.
Description
Technical Field
The invention relates to the technical field of drilling equipment for square holes, in particular to a drilling device for square holes.
Background
In the foundation engineering of buildings, bridges, roads and municipal works, the lower bearing structure of the engineering, namely a pile foundation, is often required to be installed through drilling. At present, the common pile foundation structures are mainly of two types, namely circular piles and square piles. Compared with a round pile, the square pile has the advantages that the side friction area is larger, the side friction force is stronger, and the bearing capacity is better under the condition of equal cross section and equal material. Therefore, the mechanical property of the square pile is obviously superior to that of the round pile.
However, most rotary excavators on the market today can only be used to drill circular holes for the construction of circular piles. For the excavation of square holes, the hole forming is mainly realized by means of manual excavation. The method has the defects of poor safety, inconvenience in accumulated soil removal, low hole digging efficiency and the like, and cannot meet the relevant requirements of national safety production and engineering construction.
Therefore, there is a need for a square hole drilling apparatus capable of solving the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a drilling device for square holes, which is ingenious in structure, can automatically drill square holes without manual hole digging, and improves the hole digging efficiency.
In order to achieve the purpose, the invention provides a drilling device for a square hole, which comprises an earth drilling mechanism and an earth taking mechanism, wherein the earth drilling mechanism comprises a main drill shaft which is vertically arranged and can axially rotate, and a hole expanding crawler which is arranged around the lower part of the main drill shaft in a square shape and has a belt surface parallel to the main drill shaft; the lower end of the main drill shaft is connected with a drill bit, and the lower edge of the reaming crawler belt is provided with a plurality of reaming teeth; the lower portion of the main drill shaft is provided with a driving gear which is coaxial with the main drill shaft, the inner sides of four straight edges of the reaming crawler belt are provided with driven tooth columns, and the driven tooth columns are in transmission meshing with the reaming crawler belt and the driving gear respectively.
As a further improvement of the invention, the inner sides of the four corners of the reaming crawler are provided with supporting guide wheels, and the wheel surfaces of the supporting guide wheels are in contact connection with the belt surface of the reaming crawler; the supporting guide wheel is connected with a sleeve sleeved on the main drill shaft through a supporting telescopic rod.
As a further improvement of the invention, the upper part and the lower part of the sleeve are provided with limit blocks arranged on the main drill shaft.
As a further improvement of the invention, a square sleeve with a downward opening is sleeved on the outer side of the upper part of the reaming crawler, and the main drill shaft penetrates through the top plate of the square sleeve.
As a further improvement of the invention, the soil taking mechanism comprises soil taking claw blades which are hinged on the inner side walls of four corners of the square sleeve and can swing up and down.
As a further improvement of the invention, the lower part of the soil sampling claw blade extends downwards to the lower part of the driving gear through a gap between two adjacent driven gear columns, and the lower blade surface of the soil sampling claw blade is connected with a mounting pipe sleeved on a main drill shaft through an obliquely arranged telescopic hydraulic rod.
As a further improvement of the invention, a driven drill shaft extending downwards is arranged at the axial center of the lower end surface of the driven toothed column, the lower end of the driven drill shaft is connected with a drill bit, and the upper end surface of the driven toothed column is connected with a lifting mechanism.
As a further improvement of the invention, the lifting mechanism comprises a connecting rod vertically arranged above the driven toothed column, the lower end of the connecting rod is connected with the upper end face of the driven toothed column through a rotary joint, and the upper end face of the connecting rod is connected with the power output end of a hydraulic cylinder arranged on the lower plate face of the top plate of the square sleeve.
As a further improvement of the invention, the leaf surface of the soil sampling claw leaf is provided with a strip-shaped through hole for the supporting telescopic rod to pass through.
As a further improvement of the invention, the upper part and the lower part of the installation pipe are both provided with a limiting block arranged on the main drill shaft.
Advantageous effects
Compared with the prior art, the drilling device for the square hole has the advantages that:
1. the soil drilling mechanism comprises a main drill shaft which is vertically arranged and can axially rotate, and a reaming crawler belt which is arranged around the lower part of the main drill shaft in a square shape and has a belt surface parallel to the main drill shaft. The lower end of the main drill shaft is connected with a drill bit, and the lower edge of the reaming crawler belt is provided with a plurality of reaming teeth. The lower part of the main drill shaft is provided with a driving gear which is coaxial with the main drill shaft, the inner sides of four straight edges of the reaming crawler belt are provided with driven tooth columns, and the driven tooth columns are respectively in transmission meshing with the reaming crawler belt and the driving gear. The driving gear is driven to rotate through rotation of the main drill shaft, and the driving gear drives the driven tooth column to further drive the reaming crawler belt to ream. Wherein, the main drill shaft drills holes, and the reaming crawler belt reams holes, so that the square hole can be drilled and formed at one time. The device structure is ingenious, can drill out the quad slit automatically, need not the manual work and digs the hole, has improved and has dug hole efficiency and factor of safety. Meanwhile, as the whole drilling device coaxially rotates to drill the square hole, compared with a machine for drilling the square hole by utilizing the Luoluo triangular principle, the central point of the square hole can be determined more accurately, and the accuracy of square hole drilling is further ensured.
2. The inboard at four angles of reaming track all is equipped with the support guide pulley, and the wheel face that supports the guide pulley is connected with the area face contact of reaming track. The supporting guide wheel is connected with a sleeve sleeved on the main drill shaft through a supporting telescopic rod. Through setting up the support guide pulley, can support four angles of reaming track, make the reaming track keep for square setting, and then guarantee that the hole of boring out is the square hole, the deformation can not appear, has improved drilling quality.
3. The upper part and the lower part of the sleeve are provided with limiting blocks arranged on the main drill shaft, so that the sleeve can be prevented from moving up and down at will, and the normal operation of the supporting guide wheel is ensured.
4. The soil taking mechanism comprises soil taking claw blades which are hinged on the inner side walls of four corners of the square sleeve and can swing up and down. The soil taking claw blades are arranged, so that the soil floating during drilling of the whole device can be cleaned, the soil is automatically taken, the soil floating is not required to be cleaned manually, and the drilling efficiency is improved.
5. The lower part of the soil taking claw leaf extends downwards to the lower part of the driving gear through a gap between two adjacent driven gear columns, and the lower blade surface of the soil taking claw leaf is connected with an installation pipe sleeved on a main drill shaft through a telescopic hydraulic rod arranged in an inclined mode. The soil sampling claw leaf extends downwards from the gap between two adjacent driven tooth columns, and the collision between the soil sampling claw leaf and the side wall of the driven tooth column during soil sampling can be avoided. Simultaneously, the flexible hydraulic stem that the slope set up can be used for driving the claw leaf activity of fetching earth, and then makes whole soil fetching mechanism can snatch the loam automatically.
6. The lower end face of the driven toothed column is provided with a driven drill shaft extending downwards, the lower end of the driven drill shaft is connected with a drill bit, and the upper end face of the driven toothed column is connected with a lifting mechanism. The lifting mechanism can lift the driven tooth column when the soil taking claw leaves grab the floating soil, and the collision of the soil taking claw leaves and the driven drill shaft and the drill bit at the lower end of the driven tooth column is avoided. Meanwhile, the driven toothed column is of a toothed column structure, so that the driven toothed column can be always kept meshed with the driving gear and the reaming crawler belt in the lifting process.
7. The leaf surface of the soil taking claw leaf is provided with a strip-shaped through hole for the supporting telescopic rod to pass through. The bar opening can avoid setting up the activity that the claw leaf that fetches earth influences the installation that supports the telescopic link and the claw leaf that fetches earth.
8. The top and the below of installation pipe all are equipped with the stopper of setting on the main drilling shaft, can avoid the installation pipe to reciprocate at will, and then have guaranteed the normal work operation of flexible hydraulic stem.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention without a soil sampling claw blade;
FIG. 2 is a top view of the present invention;
FIG. 3 is a top view of the earth-boring mechanism of the present invention;
FIG. 4 is a front view of the reamed track of the present invention;
FIG. 5 is a top view of the soil-borrowing mechanism of the present invention;
FIG. 6 is an enlarged schematic view of the connection and cooperation of the telescopic hydraulic rod and the soil sampling claw blade in the invention.
Wherein: 1-a soil drilling mechanism; 11-main drill shaft; 111-supporting a telescoping rod; 112-a support guide wheel; 113-a limiting block; 12-a drive gear; 13-a driven gear; 131-a rotary joint; 132-a hydraulic cylinder; 133-connecting rod; 134-driven drill shaft; 14-reaming the tracks; 141-reamer teeth; 15-a drill bit; 16-installing a tube; 161-telescopic hydraulic rod; 17-a sleeve; 2-a soil taking mechanism; 21-a square sleeve; 22-taking soil and claw leaves; 221-bar-shaped through-hole.
Detailed Description
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Examples
Detailed description of the inventionas shown in fig. 1 to 6, a square hole drilling device comprises an earth drilling mechanism 1 and an earth taking mechanism 2. Wherein, bore native mechanism 1 and include vertical setting and ability axial pivoted main brill axle 11, be square around the setting of main brill axle 11 lower part and take the face and the parallel reaming track 14 of main brill axle 11. The lower end of the main drill shaft 11 is connected with a drill 15, and the lower edge of the reaming crawler 14 is provided with a plurality of reaming teeth 141. The lower part of the main drill shaft 11 is provided with a driving gear 12 which is arranged coaxially with the main drill shaft. Driven tooth columns 13 are arranged on the inner sides of four straight edges of the reaming crawler 14, and the driven tooth columns 13 are in transmission engagement with the reaming crawler 14 and the driving gear 12 respectively.
The driving gear 12 is driven to rotate by the rotation of the main drill shaft 11, and the driving gear 12 drives the driven gear column 13, so as to drive the reaming crawler 14 to ream. Wherein, the main drill shaft 11 drills holes, and the reaming track 14 reams square holes, can be with the one-time drilling shaping of square hole. The device structure is ingenious, can drill out the quad slit automatically, need not the manual work and digs the hole, has improved and has dug hole efficiency and factor of safety. Meanwhile, as the whole drilling device coaxially rotates to drill the square hole, compared with a machine for drilling the square hole by utilizing the Luoluo triangular principle, the central point of the square hole can be determined more accurately, and the accuracy of square hole drilling is further ensured.
Further, support rollers 112 are provided at the inner sides of the four corners of the reamer crawler 14. The tread of the support idler 112 is in contact with the belt surface of the reamer track 14. The support guide wheel 112 is connected with the casing 17 sleeved on the main drill shaft 11 through the support telescopic rod 111.
In this embodiment, the upper and lower sides of the sleeve 17 are provided with the limiting blocks 113 disposed on the main drill shaft 11, so as to prevent the sleeve 17 from moving up and down at will, thereby ensuring the normal operation of the supporting guide wheel 112.
Meanwhile, a square sleeve 21 with a downward opening is sleeved on the outer side of the upper part of the reaming crawler 14. The main drill shaft 11 passes through the top plate of the square sleeve 21, and is connected with the contact surface of the square sleeve 21 through a bearing. The soil taking mechanism 2 comprises soil taking claw blades 22 which are hinged on the inner side walls of four corners of the square sleeve 21 and can swing up and down. Set up soil taking claw leaf 22, can clear up the soil slick that drills out when whole device is drilled, the automatic soil taking need not artifical the participation and clears up the soil slick, has improved drilling efficiency.
In this embodiment, the lower portion of the soil sampling claw 22 extends downward to below the driving gear 12 through the gap between two adjacent driven tooth columns 13. The lower blade surface of the soil taking claw blade 22 is connected with a mounting pipe 16 sleeved on the main drill shaft 11 through an inclined telescopic hydraulic rod 161. The soil taking claw blade 22 extends downwards from the gap between two adjacent driven tooth columns 13, so that the soil taking claw blade 22 can be prevented from colliding with the side walls of the driven tooth columns 13 during soil taking. Meanwhile, the obliquely arranged telescopic hydraulic rod 161 can be used for driving the soil taking claw blade 22 to move, so that the whole soil taking mechanism 2 can automatically grab the floating soil.
In addition, a driven drill shaft 134 extending downward is provided at the lower end surface axial center of the driven tooth column 13. The lower end of the driven drill shaft 134 is connected with a drill bit 15. The upper end face of the driven gear column 13 is connected with a lifting mechanism. The lifting mechanism can lift the driven tooth column 13 when the soil taking claw blade 22 grabs the floating soil, and the collision between the soil taking claw blade 22 and the driven drill shaft 134 and the drill bit 15 at the lower end of the driven tooth column 13 is avoided. Meanwhile, since the driven column gear 13 has a column gear structure, the driven column gear 13 can be always kept engaged with the driving gear 12 and the broaching caterpillar 14 during the lifting process.
In the present embodiment, the lifting mechanism includes a link 133 vertically disposed above the driven column 13. The lower end of the link 133 is connected to the upper end surface of the driven column gear 13 via the rotary joint 131. The upper end face of the connecting rod 133 is connected to the power output end of the hydraulic cylinder 132 provided on the lower plate face of the top plate of the square sleeve 21.
It should be noted that:
the leaf surface of the soil taking claw leaf 22 is provided with a strip-shaped through hole 221 for the supporting telescopic rod 111 to pass through. The strip-shaped through opening 221 can prevent the soil-taking claw blade 22 from being arranged to affect the installation of the supporting telescopic rod 111 and the movement of the soil-taking claw blade 22.
The upper side and the lower side of the installation pipe 16 are provided with limit blocks 113 arranged on the main drill shaft 11, so that the installation pipe 16 can be prevented from moving up and down at will, and the normal working operation of the telescopic hydraulic rod 161 is further ensured.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (10)
1. A drilling device for a square hole comprises an earth drilling mechanism (1) and an earth taking mechanism (2), and is characterized in that the earth drilling mechanism (1) comprises a main drilling shaft (11) which is vertically arranged and can axially rotate, and a hole expanding crawler belt (14) which is arranged around the lower part of the main drilling shaft (11) in a square shape and has a surface parallel to the main drilling shaft (11); the lower end of the main drill shaft (11) is connected with a drill bit (15), and the lower edge of the reaming crawler (14) is provided with a plurality of reaming teeth (141); the drilling machine is characterized in that a driving gear (12) is coaxially arranged at the lower part of the main drilling shaft (11), driven tooth columns (13) are arranged on the inner sides of four straight edges of the reaming crawler belt (14), and the driven tooth columns (13) are respectively in transmission engagement with the reaming crawler belt (14) and the driving gear (12).
2. A square hole drilling device according to claim 1, wherein the inner sides of four corners of the reaming crawler (14) are provided with supporting guide wheels (112), and the wheel surfaces of the supporting guide wheels (112) are in contact connection with the belt surfaces of the reaming crawler (14); the supporting guide wheel (112) is connected with a sleeve (17) sleeved on the main drill shaft (11) through a supporting telescopic rod (111).
3. A drilling device for square holes according to claim 2, characterized in that the bushing (17) is provided with stop blocks (113) above and below the main drill shaft (11).
4. A square hole drilling device according to claim 1, wherein the upper outer side of the reaming crawler (14) is sleeved with a square sleeve (21) with a downward opening, and the main drill shaft (11) penetrates through the top plate of the square sleeve (21).
5. A drilling device for square holes according to claim 4, characterized in that the soil-taking mechanism (2) comprises soil-taking claw blades (22) hinged on the inner side walls of the four corners of the square sleeve (21) and capable of swinging up and down.
6. The drilling device for the square hole is characterized in that the lower part of the soil sampling claw blade (22) extends downwards to the lower part of the driving gear (12) through a gap between two adjacent driven tooth columns (13), and the lower blade surface of the soil sampling claw blade (22) is connected with a mounting pipe (16) sleeved on a main drill shaft (11) through an obliquely arranged telescopic hydraulic rod (161).
7. A square hole drilling device according to claim 6, characterized in that a driven drill shaft (134) extending downwards is arranged at the axial center of the lower end surface of the driven tooth column (13), the lower end of the driven drill shaft (134) is connected with a drill bit (15), and the upper end surface of the driven tooth column (13) is connected with a lifting mechanism.
8. A drilling device for square hole according to claim 7, characterized in that the lifting mechanism comprises a connecting rod (133) vertically arranged above the driven tooth column (13), the lower end of the connecting rod (133) is connected with the upper end face of the driven tooth column (13) through a rotary joint (131), and the upper end face of the connecting rod (133) is connected with the power output end of a hydraulic cylinder (132) arranged on the lower plate face of the top plate of the square sleeve (21).
9. A drilling device for square holes according to claim 6, characterized in that the blade surface of the soil-taking claw blade (22) is provided with a strip-shaped through hole (221) for the support telescopic rod (111) to pass through.
10. A drilling device for square holes according to claim 6, characterized in that the mounting tube (16) is provided with stop blocks (113) on the main drill shaft (11) above and below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911350152.3A CN110952920A (en) | 2019-12-24 | 2019-12-24 | Drilling device for square hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911350152.3A CN110952920A (en) | 2019-12-24 | 2019-12-24 | Drilling device for square hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110952920A true CN110952920A (en) | 2020-04-03 |
Family
ID=69984068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911350152.3A Pending CN110952920A (en) | 2019-12-24 | 2019-12-24 | Drilling device for square hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110952920A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878903A (en) * | 2021-01-21 | 2021-06-01 | 四川省铁路建设有限公司 | Drilling device for rectangular pile foundation |
| CN114233179A (en) * | 2021-12-15 | 2022-03-25 | 安徽元昌建设工程有限公司 | Building construction foundation drilling equipment with square and round hole switching function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1596308A (en) * | 1978-05-17 | 1981-08-26 | Weaver & Hurt Ltd | Anchor hole drilling |
| SE8500888D0 (en) * | 1984-02-25 | 1985-02-22 | Turmag Turbo Masch Ag | BOHRKOPF WITH PLANETENGRIEBE UND EINFACHEM BOHRGESTENGE |
| CN205917751U (en) * | 2016-06-15 | 2017-02-01 | 中铁港航局集团有限公司 | Thick clay layer device that fetches earth |
| CN106368616A (en) * | 2016-07-18 | 2017-02-01 | 中天建设集团有限公司 | Pouring square pile drill bit |
| CN209129534U (en) * | 2018-11-29 | 2019-07-19 | 中冶集团武汉勘察研究院有限公司 | Reamer for slewing drilling machine square pile disposal pore-forming |
| WO2019196159A1 (en) * | 2018-04-09 | 2019-10-17 | 王瑞奇 | Drill speeder and drilling device |
| CN110513041A (en) * | 2019-09-26 | 2019-11-29 | 蔡群 | A kind of construction of ground is with moving rectangular drilling equipment |
| CN212054481U (en) * | 2019-12-24 | 2020-12-01 | 青海岩土工程勘察咨询有限公司 | Drilling device for square hole |
-
2019
- 2019-12-24 CN CN201911350152.3A patent/CN110952920A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1596308A (en) * | 1978-05-17 | 1981-08-26 | Weaver & Hurt Ltd | Anchor hole drilling |
| SE8500888D0 (en) * | 1984-02-25 | 1985-02-22 | Turmag Turbo Masch Ag | BOHRKOPF WITH PLANETENGRIEBE UND EINFACHEM BOHRGESTENGE |
| CN205917751U (en) * | 2016-06-15 | 2017-02-01 | 中铁港航局集团有限公司 | Thick clay layer device that fetches earth |
| CN106368616A (en) * | 2016-07-18 | 2017-02-01 | 中天建设集团有限公司 | Pouring square pile drill bit |
| WO2019196159A1 (en) * | 2018-04-09 | 2019-10-17 | 王瑞奇 | Drill speeder and drilling device |
| CN209129534U (en) * | 2018-11-29 | 2019-07-19 | 中冶集团武汉勘察研究院有限公司 | Reamer for slewing drilling machine square pile disposal pore-forming |
| CN110513041A (en) * | 2019-09-26 | 2019-11-29 | 蔡群 | A kind of construction of ground is with moving rectangular drilling equipment |
| CN212054481U (en) * | 2019-12-24 | 2020-12-01 | 青海岩土工程勘察咨询有限公司 | Drilling device for square hole |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878903A (en) * | 2021-01-21 | 2021-06-01 | 四川省铁路建设有限公司 | Drilling device for rectangular pile foundation |
| CN114233179A (en) * | 2021-12-15 | 2022-03-25 | 安徽元昌建设工程有限公司 | Building construction foundation drilling equipment with square and round hole switching function |
| CN114233179B (en) * | 2021-12-15 | 2023-10-27 | 北京中泓升环境科技有限公司 | Construction foundation drilling equipment with square and round hole switching function |
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