CN113073934A - Variable-angle self-rotating rotary drill bit and foundation construction method of variable-angle self-rotating rotary drill bit applied to tree root pile - Google Patents
Variable-angle self-rotating rotary drill bit and foundation construction method of variable-angle self-rotating rotary drill bit applied to tree root pile Download PDFInfo
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- CN113073934A CN113073934A CN202110536003.7A CN202110536003A CN113073934A CN 113073934 A CN113073934 A CN 113073934A CN 202110536003 A CN202110536003 A CN 202110536003A CN 113073934 A CN113073934 A CN 113073934A
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 47
- 238000009434 installation Methods 0.000 claims description 21
- 230000002787 reinforcement Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 3
- 239000004429 Calibre Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
- E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- 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)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a variable-angle self-rotating rotary drilling bit and a foundation construction method applied to a tree root pile, and belongs to the technical field of tree root pile drilling bits.
Description
Technical Field
The invention relates to the technical field of tree root pile drill bits, in particular to an angle-variable self-rotating rotary drill bit and a foundation construction method applied to a tree root pile.
Background
With the continuous rising of labor cost and the continuous improvement of construction safety risks, the mechanized construction of the power transmission line becomes a necessary trend. However, the power transmission line is in point-like linear distribution, each construction site is in a dispersed state, and the construction sites are often in high mountains and steep mountains and have the characteristics of difficulty in entering the field by equipment and the like, so that the basic mechanized construction of the power transmission line is always a short plate for line construction.
How to enter the field and how to miniaturize the construction equipment become important factors for solving the difficult problem of mechanized construction of the power transmission line. The invention provides a novel foundation type 'multi-gradient large-caliber abutment tree root pile' from the source of design, and fundamentally solves the problems of high power and heavy weight of equipment.
The conventional rotary drilling rig bit comprises: the bucket tooth sand fishing bucket, the pick barrel drill, the cone barrel drill and the bottom expanding drill bit, wherein the bucket tooth drill bit is suitable for the stratum with a loose structure, and the pick bit is suitable for the stratum such as a hard soil layer, a gravel layer and the like.
Although the drill bit of the rotary drilling rig can meet most of basic engineering construction, when one type of drill bit with the upper part of a large-caliber abutment structure and the lower part of a multi-gradient large-caliber abutment tree root pile is encountered in engineering, the drill bit of the rotary drilling rig can not meet the requirement of the engineering at present.
Based on the above, the invention designs the variable-angle self-rotating rotary drill bit and the foundation construction method thereof applied to the tree root pile, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a variable-angle self-rotating rotary drill bit and a foundation construction method thereof applied to a tree root pile so as to solve the technical problem.
In order to realize the purpose, the invention provides the following technical scheme: the utility model provides a drill bit is dug soon to variable angle rotation formula, is including installing respectively in quick-witted frame of stake and main epaxial shell and pivot, the pivot rotationally run through in the shell, the shell is for having the shell structure of an installation cavity, wear to be equipped with a plurality of rings on the shell and arrange in the drill bit installation axle in the pivot outside, pivot and drill bit installation axle bottom are installed and are dismantled the drill bit, the pivot is located the shell outer wall has cup jointed the driving gear, the outer wall of drill bit installation axle has cup jointed driven gear, each driven gear with the driving gear meshing transmission through floating structure, drill bit installation axle top is provided with and is used for adjusting the regulation structure at drill bit installation axle inclination.
Preferably, the floating structure is including being fixed in the inboard adapter sleeve of driven gear, the adapter sleeve upper end through the bearing with the shell rotation installation, the fixed wear-resisting rubber pad that is provided with of inner chamber of adapter sleeve, the wear-resisting rubber pad inner chamber passes through elastic component fixedly connected with rigidity contact ring, drill bit installation axle is fixed to be inlayed and is located in the rigidity contact ring.
Preferably, the adjusting structure comprises a connecting plate fixedly connected to the top end of the drill mounting shaft, and a plurality of screw distance adjusting assemblies are arranged on the outer side of the bottom of the connecting plate in a circular row.
Preferably, the screw rod distance adjusting component comprises a distance adjusting screw rod and a distance adjusting screw sleeve which are respectively rotatably installed on the connecting plate and the shell, and the distance adjusting screw rod and the distance adjusting screw sleeve are coaxially screwed.
Preferably, the screw pitch control assemblies are four in number and distributed in a square vertex angle.
Preferably, two mutually perpendicular cylindrical level bubbles are arranged at the top of the connecting plate.
Preferably, the drill bit installation axle is embedded to be equipped with and installs condenser tube, condenser tube's lower extreme delivery port acts on can dismantle on the drill bit.
A foundation construction method of a variable-angle rotation type rotary drill bit applied to a tree root pile comprises the following steps:
1. and (4) leveling the field, placing the rotary drilling rig in place, selecting a large-caliber abutment foundation drill bit at the upper part, and rotary drilling to the bottom of the designed abutment foundation.
2. According to the field requirement, the drilling angle of the 'detachable self-rotating drill bit' is adjusted by adjusting the screw rod distance-adjusting component.
3. A drill bit of the rotary drilling rig with variable-angle rotation is mounted, equipment is started to check the rotation performance of the drill bit, and a cooling water pipe and an external cooling liquid tank are connected after the check is correct, so that the cooling pipe is guaranteed to be smooth.
4. The drilling position of the miniature pile is manually positioned, and the accuracy of the drilling position is ensured.
5. And (4) starting the drilling machine, starting the cooling liquid pressure device, drilling, timely cleaning holes, timely checking drilling indexes such as hole depth and hole inclination after drilling is finished, and re-drilling if the requirements cannot be met.
6. And (3) bundling the root pile reinforcement cage on the existing field plate, hoisting the reinforcement cage through a rotary drilling rig, lowering the root pile reinforcement cage, pouring the root pile concrete and vibrating in time.
7. After the foundation concrete of the tree root pile is initially set, the large-diameter abutment foundation steel reinforcement cage is bundled by plates, the steel reinforcement cage is hoisted by a rotary drilling rig, the large-diameter abutment concrete is poured and vibrated in time, and foundation maintenance is carried out.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a novel transmission line foundation type, which is large in upper part size and small in lower part size, provides a design basis for equipment miniaturization in mountain areas, reduces building width of an approach road for a construction site with 'point-shaped linear' distribution of the transmission line, and provides convenience for protecting ecological environment.
The invention provides a novel rotary drilling rig drill bit, which forms self-rotating type tree root pile drilling equipment by using a single-shaft transmission type principle, and realizes the function of multiple gradients by using an adjusting system on the drill bit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a variable-angle self-rotating rotary drill bit according to the present invention;
FIG. 2 is a schematic view of a top view of the variable angle self-rotating rotary drill bit of the present invention;
FIG. 3 is a schematic cross-sectional view of the variable-angle self-rotating rotary drill bit according to the present invention;
FIG. 4 is a schematic structural view of an adjusting structure of the variable-angle self-rotating rotary drill bit of the present invention;
FIG. 5 is a schematic view of a stump structure according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-shell, 2-rotating shaft, 3-bit mounting shaft, 4-detachable bit, 5-driving gear, 6-driven gear, 61-connecting sleeve, 62-wear-resistant rubber pad, 63-elastic element, 64-rigid contact ring, 7-adjusting structure, 71-connecting plate, 72-screw pitch adjusting component, 721-pitch adjusting screw, 722-pitch adjusting screw sleeve, 73-cylindrical level bubble, 8-cooling water pipe and 9-driven gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Referring to fig. 1-5, the present invention provides a technical solution: a variable-angle rotation type rotary drilling bit comprises a shell 1 and a rotating shaft 2 which are respectively arranged on a machine frame of a pile machine and a main shaft, wherein the shell 1 is composed of steel plates, the main purpose is to protect a transmission device from being damaged by external force, a relevant detachable part is required to be arranged, the maintenance work of an internal structure is convenient, the rotating shaft 2 can rotatably penetrate through the shell 1, the outer shell 1 is of a shell structure with an installation cavity, a plurality of drill bit installation shafts 3 which are circularly arranged on the outer side of the rotating shaft 2 penetrate through the outer shell 1, detachable drill bits 4 are installed at the bottoms of the rotating shaft 2 and the drill bit installation shafts 3, the rotating shaft 2 is positioned on the outer wall of the outer shell 1 and is sleeved with a driving gear 5, driven gears 9 are sleeved on the outer wall of the drill bit installation shafts 3 through floating structures 6, each driven gear 9 is in meshing transmission with the driving gear 5, and an adjusting structure 7 used for adjusting the inclination angle of the drill bit installation shafts 3 is arranged;
wherein, the floating structure 6 comprises a connecting sleeve 61 fixed on the inner side of the driven gear 9, the upper end of the connecting sleeve 61 is rotatably installed with the shell 1 through a bearing and is used as a supporting structure of the drill bit installation shaft 3, a wear-resistant rubber pad 62 is fixedly arranged in the inner cavity of the connecting sleeve 61 and is used as an intermediate part to play a role of connection and buffering, a rigid contact ring 64 is fixedly connected in the inner cavity of the wear-resistant rubber pad 62 through an elastic part 63, the elastic part 63 can select a spring or other structural parts which can be bent, deformed and restored to the original shape, the drill bit installation shaft 3 is fixedly, due to the deformable characteristic of the elastic member 63, when the adjusting structure 7 is adjusted to drive the drill bit mounting shaft 3 to incline towards one side, the drill bit mounting shaft 3 can be kept fixed with the driven gear 9 in an aligned manner, therefore, the driving gear 5 drives the drill bit mounting shaft 3 to rotate through the meshing action relationship with the driven gear 9 when the working is not influenced;
wherein, the adjusting structure 7 comprises a connecting plate 71 fixedly connected to the top end of the drill mounting shaft 3, a plurality of screw distance adjusting components 72 are arranged on the outer side of the bottom of the connecting plate 71 in a circular row, the screw distance adjusting components 72 comprise distance adjusting screws 721 and distance adjusting screw sleeves 722 respectively rotatably mounted on the connecting plate 71 and the shell 1, the distance adjusting screws 721 and the distance adjusting screw sleeves 722 are coaxially screwed, the number of the screw distance adjusting components 72 is four, the screw distance adjusting components are distributed in a square vertex angle, the length of the screw pitch assembly 72 can be changed by rotating the pitch screw 721 in the screw pitch assembly 72, the inclination angle of the connecting plate 71 relative to the housing 1 can be changed by adjusting the lengths of the four sets of screw distance adjusting assemblies 72, because the connecting plate 71 and the drill bit mounting shaft 3 are relatively fixed, the inclination of the connecting plate 71 is adjusted, namely the inclination of the drill bit mounting shaft 3 and the inclination of the detachable drill bit 4 are adjusted, so that a tree-pile type radial structure is formed; furthermore, the top of the connection plate 71 is provided with two mutually perpendicular cylindrical level vials 73 for reference calibration as a means of adjusting the horizontal state of the connection plate 71 and the inclination of the detachable drill 4;
wherein, the embedded condenser tube 8 of installing of being equipped with of drill bit installation axle 3, condenser tube 8's lower extreme delivery port acts on can dismantling drill bit 4, through letting in the coolant liquid, in order to guarantee that the drill bit is overheated in the rock that creeps into and causes the destruction of drill bit.
"many inclinations heavy-calibre pier root stake" basis comprises two parts, circular pier (a) of upper portion heavy-calibre, miniature pile foundation of lower part multidirection (b), and its concrete steel bar structure is prior art, no longer gives unnecessary details.
A foundation construction method of a variable-angle rotation type rotary drill bit applied to a tree root pile is characterized by comprising the following steps:
1. and (4) leveling the field, placing the rotary drilling rig in place, selecting a large-caliber abutment foundation drill bit at the upper part, and rotary drilling to the bottom of the designed abutment foundation.
2. According to the field requirement, the drilling angle of the 'detachable self-rotating drill bit' is adjusted by adjusting the screw rod distance-adjusting component.
3. A drill bit of the rotary drilling rig with variable-angle rotation is mounted, equipment is started to check the rotation performance of the drill bit, and a cooling water pipe and an external cooling liquid tank are connected after the check is correct, so that the cooling pipe is guaranteed to be smooth.
4. The drilling position of the miniature pile is manually positioned, and the accuracy of the drilling position is ensured.
5. And (4) starting the drilling machine, starting the cooling liquid pressure device, drilling, timely cleaning holes, timely checking drilling indexes such as hole depth and hole inclination after drilling is finished, and re-drilling if the requirements cannot be met.
6. And (3) bundling the root pile reinforcement cage on the existing field plate, hoisting the reinforcement cage through a rotary drilling rig, lowering the root pile reinforcement cage, pouring the root pile concrete and vibrating in time.
7. After the foundation concrete of the tree root pile is initially set, the large-diameter abutment foundation steel reinforcement cage is bundled by plates, the steel reinforcement cage is hoisted by a rotary drilling rig, the large-diameter abutment concrete is poured and vibrated in time, and foundation maintenance is carried out.
In the description of the invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "two ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the invention is understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a drill bit is dug soon to variable angle rotation formula which characterized in that: comprises a shell (1) and a rotating shaft (2) which are respectively arranged on a machine frame of the pile machine and a main shaft, the rotating shaft (2) can rotatably penetrate through the shell (1), the shell (1) is a shell structure with an installation cavity, a plurality of drill bit mounting shafts (3) arranged on the outer side of the rotating shaft (2) in a circular way are arranged on the shell (1) in a penetrating way, the bottom of the rotating shaft (2) and the drill mounting shaft (3) is provided with a detachable drill (4), the rotating shaft (2) is positioned on the outer wall of the shell (1) and is sleeved with a driving gear (5), the outer wall of the drill bit mounting shaft (3) is sleeved with driven gears (9) through a floating structure (6), each driven gear (9) is in meshing transmission with the driving gear (5), the top end of the drill bit mounting shaft (3) is provided with an adjusting structure (7) for adjusting the inclination angle of the drill bit mounting shaft (3).
2. The variable-angle self-rotating rotary drill bit according to claim 1, characterized in that: floating structure (6) including being fixed in driven gear (9) inboard adapter sleeve (61), adapter sleeve (61) upper end through the bearing with shell (1) rotates the installation, the fixed wear-resisting rubber pad (62) that is provided with in inner chamber of adapter sleeve (61), wear-resisting rubber pad (62) inner chamber passes through elastic component (63) fixedly connected with rigidity contact ring (64), drill bit installation axle (3) are fixed to be inlayed and are located in rigidity contact ring (64).
3. The variable-angle self-rotating rotary drill bit according to claim 1, characterized in that: the adjusting structure (7) comprises a connecting plate (71) fixedly connected to the top end of the drill mounting shaft (3), and a plurality of screw rod distance adjusting assemblies (72) are arranged on the outer side of the bottom of the connecting plate (71) in a circular row.
4. The variable-angle self-rotating rotary drill bit according to claim 3, characterized in that: the screw distance adjusting assembly (72) comprises a distance adjusting screw (721) and a distance adjusting threaded sleeve (722) which are respectively rotatably mounted on the connecting plate (71) and the shell (1), and the distance adjusting screw (721) and the distance adjusting threaded sleeve (722) are coaxially screwed.
5. The variable-angle self-rotating rotary drill bit according to claim 3, characterized in that: the screw pitch-adjusting assemblies (72) are four groups and distributed in a square vertex angle.
6. The variable-angle self-rotating rotary drill bit according to claim 3, characterized in that: the top of the connecting plate (71) is provided with two mutually perpendicular cylindrical level bubbles (73).
7. The variable-angle self-rotating rotary drill bit according to claim 1, characterized in that: the embedded cooling water pipe (8) of installing of being equipped with of drill bit installation axle (3), the lower extreme delivery port of cooling water pipe (8) acts on can dismantle on drill bit (4).
8. The foundation construction method of the variable-angle self-rotating rotary drill bit applied to the tree root pile according to any one of claims 1 to 7, characterized by comprising the following steps of:
(1) and (4) leveling the field, placing the rotary drilling rig in place, selecting a large-caliber abutment foundation drill bit at the upper part, and rotary drilling to the bottom of the designed abutment foundation.
(2) According to the field requirement, the drilling angle of the 'detachable self-rotating drill bit' is adjusted by adjusting the screw rod distance-adjusting component.
(3) A drill bit of the rotary drilling rig with variable-angle rotation is mounted, equipment is started to check the rotation performance of the drill bit, and a cooling water pipe and an external cooling liquid tank are connected after the check is correct, so that the cooling pipe is guaranteed to be smooth.
(4) The drilling position of the miniature pile is manually positioned, and the accuracy of the drilling position is ensured.
(5) And (4) starting the drilling machine, starting the cooling liquid pressure device, drilling, timely cleaning holes, timely checking drilling indexes such as hole depth and hole inclination after drilling is finished, and re-drilling if the requirements cannot be met.
(6) And (3) bundling the root pile reinforcement cage on the existing field plate, hoisting the reinforcement cage through a rotary drilling rig, lowering the root pile reinforcement cage, pouring the root pile concrete and vibrating in time.
(7) After the foundation concrete of the tree root pile is initially set, the large-diameter abutment foundation steel reinforcement cage is bundled by plates, the steel reinforcement cage is hoisted by a rotary drilling rig, the large-diameter abutment concrete is poured and vibrated in time, and foundation maintenance is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536003.7A CN113073934A (en) | 2021-05-17 | 2021-05-17 | Variable-angle self-rotating rotary drill bit and foundation construction method of variable-angle self-rotating rotary drill bit applied to tree root pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536003.7A CN113073934A (en) | 2021-05-17 | 2021-05-17 | Variable-angle self-rotating rotary drill bit and foundation construction method of variable-angle self-rotating rotary drill bit applied to tree root pile |
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| Publication Number | Publication Date |
|---|---|
| CN113073934A true CN113073934A (en) | 2021-07-06 |
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|---|---|---|---|
| CN202110536003.7A Pending CN113073934A (en) | 2021-05-17 | 2021-05-17 | Variable-angle self-rotating rotary drill bit and foundation construction method of variable-angle self-rotating rotary drill bit applied to tree root pile |
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| CN (1) | CN113073934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382084A (en) * | 2022-01-27 | 2022-04-22 | 开封大学 | Reinforced reinforcement cage, cage lowering device and pouring construction method |
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2021
- 2021-05-17 CN CN202110536003.7A patent/CN113073934A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382084A (en) * | 2022-01-27 | 2022-04-22 | 开封大学 | Reinforced reinforcement cage, cage lowering device and pouring construction method |
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