CN115341852A - Expanding drill bit and expanding drilling tool thereof - Google Patents
Expanding drill bit and expanding drilling tool thereof Download PDFInfo
- Publication number
- CN115341852A CN115341852A CN202211065627.6A CN202211065627A CN115341852A CN 115341852 A CN115341852 A CN 115341852A CN 202211065627 A CN202211065627 A CN 202211065627A CN 115341852 A CN115341852 A CN 115341852A
- Authority
- CN
- China
- Prior art keywords
- bit
- rod
- drilling
- hole
- drill
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 238000010030 laminating Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 13
- 230000037431 insertion Effects 0.000 abstract description 13
- 238000009434 installation Methods 0.000 abstract description 6
- 230000011218 segmentation Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding 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
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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 hole expanding drill bit and a hole expanding drilling tool thereof, and belongs to the technical field of drilling tool equipment. The reaming drilling tool comprises a drilling rod and a drilling bit, wherein a liquid injection channel is arranged in the middle of the drilling rod, a liquid injection hole is formed in the end part of the drilling bit, positioning insertion blocks which are axially symmetric are arranged on the drilling rod, and positioning threaded holes for threaded connection of bolts are formed in the positioning insertion blocks. The reaming bit is of a split structure, and the installation of the reaming bit can be completed only by installing the assembly on the positioning insert block during installation, so that the installation mode is simple, an integrated drill rod can be adopted, segmentation is not needed, the structural strength of the drill rod is guaranteed, a stepped hole can be formed at one time, and the central axes of the drilling section and the reaming section are always coincided.
Description
Technical Field
The invention relates to the technical field of drilling tool equipment, in particular to a reaming bit and a reaming drilling tool thereof.
Background
At present, the construction steps of drilling the stepped hole are generally as follows: firstly, drilling a small hole on a rock body by using a common drill bit, and then reaming the small hole by using a reaming drill bit according to requirements. The method has the advantages of inconvenience and high difficulty in the operation process, and more importantly, the coincidence of the small holes and the expanded central axes cannot be ensured. Therefore, the invention patent with the patent number of 202010055184.7 and the patent name of the drilling and reaming integrated device for the constant-resistance large-deformation anchor rod discloses a drilling and reaming integrated drilling tool, which comprises a plurality of drill bits distributed along a straight line, wherein each drill bit comprises a rod part and a head part, and the head parts are arranged on the end surfaces of the rod parts; the rod part of one drill bit is in threaded connection with the head part of the other drill bit, and the central axes of the rod parts are overlapped; the diameter of each head increases along the straight line in proper order, and this drilling reaming integrated device can once only accomplish drilling and reaming, and the work progress is comparatively simple, and can guarantee that the axis of drilling section and reaming section coincides mutually, and then improves the machining precision. However, in the drilling tool, the drill rod is composed of the rod bodies of the drill bits, the drill rod is of a multi-section structure, the multi-section structure is poor in integration compared with the integrated drill rod, particularly, the more the drill bits are, the more the sections of the rod bodies are, the lower the structural strength of the rod bodies is, and in order to achieve assembly, the diameter of the rod body part of the drill bit is increased in a stepped manner, so that the overall rod diameter of the drill rod is increased in a stepped manner after the drill rod is assembled, and the stepped change position is easy to cause damage to the rod bodies due to stress concentration caused by different rod diameters.
Disclosure of Invention
The invention aims to solve the technical problems and provides a hole expanding drill bit and a hole expanding drilling tool thereof, and provides a novel installation mode of the hole expanding drill bit and a drill rod.
In order to achieve the purpose, the invention provides the following scheme: the invention discloses a hole expanding drill bit, which comprises an assembly body which is mutually buckled to form the hole expanding drill bit, wherein the assembly body comprises an assembly base provided with a hole expanding cutter, a drilling rod accommodating groove used for being buckled into an accommodating through hole is formed in the buckling surface of the assembly base, the inner wall of the accommodating through hole is attached to the outer wall of a rod body of a drilling rod, positioning insertion blocks which are axially symmetrical are arranged on the rod body of the drilling rod, positioning insertion grooves for the insertion of the positioning insertion blocks are formed in the drilling rod accommodating groove, fastening threaded holes for bolts to penetrate into the positioning insertion grooves are formed in the assembly base, and positioning threaded holes for the threaded connection of the bolts are formed in the positioning insertion blocks.
Preferably, the buckling surface of the assembly base is provided with plug connectors and plug grooves which are respectively arranged on two sides of the drill rod accommodating groove.
Preferably, a mounting groove for accommodating the head of the bolt is formed in one surface, away from the buckling surface, of the assembly base, the mounting groove is communicated with the fastening threaded hole, and the depth of the mounting groove is greater than or equal to the thickness of the head of the bolt.
Preferably, reamer includes the blade holder from taking the tool bit, the blade holder is fixed of interval in order the end of equipment base, it is adjacent interval between the blade holder forms the chip groove.
Preferably, a cutter head mounting frame is arranged at one end, far away from the assembling base, of the cutting surface of the cutter holder, the cutter head mounting frame is perpendicular to the axis of the drill rod, and the cutter heads are mounted on the cutter head mounting frame side by side.
Preferably, the seat is a sector block.
Preferably, the assembly base is cylindrical or frustoconical.
Still disclose a reamer drilling tool that supplies reamer bit to install, be in including drilling rod and setting the drilling bit of drilling rod tip, the middle part of drilling rod is equipped with annotates the liquid passageway, be equipped with on the tip of drilling bit with annotate the liquid hole of liquid passageway intercommunication, be equipped with on the body of rod of drilling rod and be axial symmetry the location inserted block, be equipped with on the location inserted block location screw hole.
Preferably, the end of the drill rod is provided with a mounting threaded hole communicated with the liquid injection channel, the end of the drilling bit is provided with a threaded rod in threaded fit with the mounting threaded hole, and the middle of the threaded rod is provided with a circulation channel for supplying the liquid injection hole to be communicated with the liquid injection channel.
Preferably, the drill bit includes the tool post and fixes the wing of tool post tip, the wing tip is equipped with the blade, annotate the liquid hole setting and be in the middle part of tool post, the wing is the partition of axial symmetry and establishes annotate the both sides in liquid hole, the threaded rod is coaxial to be fixed the tool post is kept away from the one end of wing.
Compared with the prior art, the invention has the following technical effects:
1. the reaming drill bit disclosed by the invention comprises two assemblies, and the two assemblies can be mutually buckled on a drill rod and can be separately disassembled from the drill rod, so that the drill rod can adopt an integrated drill rod, and the assembly bases of the two assemblies can be installed on the positioning insertion block of the drill rod by using bolts only by arranging the positioning insertion block on the drill rod without segmentation, so that the integrity of the drill rod is ensured, and the drill rod cannot generate step-shaped change, so that the problem that the drill rod is easy to damage due to stress concentration is avoided.
2. In the reaming drilling tool, the reaming drill bit and the drilling drill bit can share the same drill rod after being installed on the drill rod, a step hole can be formed at one time without replacing the drill rod and the drill bit during drilling, the reaming drill bit and the drilling drill bit share the same rod body, the central axes of the drilling section and the reaming section can be always kept coincident, and the construction efficiency can be improved on the premise of ensuring the operation quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described 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 according to these drawings without creative efforts.
FIG. 1 is a schematic view of a reamer tool;
FIG. 2 is a cross-sectional view of the reamer tool;
FIG. 3 is a cross-sectional view of a reamer bit;
FIG. 4 is a schematic view of a reamer bit;
FIG. 5 is a sectional view of the structure of the drill rod for mounting one end of a drill bit;
FIG. 6 is a schematic diagram of a drill bit;
fig. 7 is a structural sectional view of the positioning insert.
Description of reference numerals: 1. a drill stem; 2. a drill bit for drilling; 3. a hole expanding drill bit; 4. assembling a base; 5. a drill rod accommodating groove; 6. positioning the slot; 7. fastening the threaded hole; 8. a plug-in connector; 9. inserting grooves; 10. installing a groove; 11. positioning the insert block; 12. positioning the threaded hole; 13. a tool apron; 14. a chip groove; 15. a tool bit mounting bracket; 16. a cutter head; 17. a liquid injection channel; 18. a liquid injection hole; 19. installing a threaded hole; 20. a threaded rod; 21. a tool post; 22. a blade; 23. a blade.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
The present embodiment provides a reamer head, as shown in fig. 1 to 7, comprising two identical assemblies, and the reamer head 3 can be formed by fastening the two assemblies to each other. The assembly body is equipped with drilling rod holding tank 5 including the equipment base 4 that is equipped with the reamer, the equipment base 4 be used for with the equipment base 4 of another assembly body on the lock face that carries out the lock, the equipment base 4 mutual lock back of two assembly bodies, drilling rod holding tank 5 can form one and hold the through-hole. After the drill rod 1 is placed into the accommodating through hole, the inner wall of the accommodating through hole is attached to the outer wall of the rod body of the drill rod 1, so that the drill rod 1 is prevented from shaking in the accommodating through hole. Two positioning inserts 11 are provided on the rod body of the drill rod 1, the two positioning inserts 11 are fixed on both sides of the rod body of the drill rod 1 in an axial symmetry manner, and the positioning inserts 11 and the drill rod 1 can be integrally formed as a preferable positioning insert. A positioning slot 6 is arranged in the drill rod accommodating groove 5, and the size and the shape of the positioning slot 6 are matched with those of the positioning insertion block 11 so as to allow the positioning insertion block 11 to be inserted into the positioning slot 6. Be equipped with on the equipment base 4 with the communicating fastening screw hole 7 of positioning slot 6, be equipped with positioning screw hole 12 on the location inserted block 11, with the location inserted block 11 insert positioning slot 6 in the back, fastening screw hole 7 just can align with positioning screw hole 12, penetrate fastening screw hole 7 and positioning screw hole 12 back with the bolt screw thread in proper order this moment, alright fix the equipment base 4 on location inserted block 11, realize the installation of reamer bit 3 and drilling rod 1.
The installation process comprises the following steps: firstly, preparing a drill rod 1 with a positioning insert 11 and at least one pair of assembly bodies; then, the positioning slots 6 on the two assembling bases 4 are respectively inserted into the two corresponding positioning insertion blocks 11 of the drill rod 1, so that the rod body of the drill rod 1 is buckled between the drill rod accommodating grooves 5 of the two assembling bases 4; finally, penetrate fastening screw hole 7 and location screw hole 12 with the bolt screw thread in proper order and screw up the back, alright lock two equipment bases 4, make both lock faces closely laminate, two equipment bases 4 just in time piece into a complete reamer bit 3 this moment, and the body of rod of drilling rod 1 has just been stayed in the holding through-hole that two drilling rod holding tanks 5 are constituteed, has accomplished the installation. When the two assembling bodies are disassembled, the bolts are screwed out, and then the two assembling bodies are disassembled.
In order to improve the stability of the two assembled bodies after being assembled, in this embodiment, as shown in fig. 1 to 7, a plug 8 and a plug groove 9 are arranged on the fastening surface of the assembly base 4, and the plug 8 and the plug groove 9 are respectively arranged on two sides of the drill rod accommodating groove 5. When the two assemblies are assembled, the plug 8 of one assembly is inserted into the plug groove 9 of the other assembly, and the plug 8 of the other assembly is inserted into the plug groove 9 of the assembly, so that the assembly stability of the reamer bit 3 can be further improved.
Further, in the present embodiment, as shown in fig. 1 to 7, a mounting groove 10 for accommodating a head of a bolt is provided on a surface of the assembly base 4 away from the fastening surface, the mounting groove 10 is communicated with the fastening threaded hole 7, and a depth of the mounting groove 10 is greater than or equal to a thickness of the head of the bolt, so that a space can be reserved for the head of the bolt, and the situation that the bolt is loosened due to contact with a rock-soil body when the reamer bit 3 is used is prevented.
In this embodiment, as shown in fig. 1 to 7, the reamer includes a holder 13, and a cutter head 16 is disposed on the holder 13. The tool holders 13 are sequentially fixed at intervals at the end of the assembly base 4, the tool bits 16 on the tool holders 13 face the same direction, and the intervals between the adjacent tool holders 13 form chip discharge grooves 14 so as to discharge waste chips in the hole expanding process. Preferably, each assembly base 4 is provided with two tool seats 13, after the assembly bases 4 of the two assemblies are fastened, the total number of the tool seats 13 on the reamer bit 3 is four, the four tool seats 13 are uniformly arranged in sequence along the circumference, and a chip groove 14 can be formed in a gap between two adjacent tool seats 13.
Further, in the present embodiment, as shown in fig. 1 to 7, a tool bit mounting bracket 15 is disposed at one end of the cutting surface of the tool post 13 away from the assembly base 4, and the tool bit mounting bracket 15 is fixed on the tool post 13, which may be welded, or the tool bit mounting bracket 15 and the tool post 13 are integrally formed. The tool bit mounting 15 is perpendicular to the axis of the drill rod 1, and the tool bits are mounted side by side on the tool bit mounting 15. Preferably, a plurality of cutter head circular grooves are arranged on the cutter head mounting frame 15 side by side, and a plurality of cutter heads 16 are correspondingly fixed in the cutter head circular grooves by welding or other fixing methods. Of course, the cutting head 16 can also be formed integrally with the holder 13.
In this embodiment, as shown in fig. 1 to 7, the blade holder 13 is fan-shaped block, and the arcwall face of fan-shaped block is outwards, and class face of cylinder can be constituteed to the arcwall face of a plurality of blade holder 13 to reduce colliding with and the friction between blade holder 13 and the rock mass.
In the present embodiment, as shown in fig. 1 to 7, the assembly base 4 has a cylindrical shape or a truncated cone shape.
Example 2
The present embodiment provides a reamer tool, which can be installed with the reamer bit 3 of embodiment 1, as shown in fig. 1 to 7, and comprises a drill rod 1 and a drilling bit 2, wherein the drilling bit 2 is arranged at the end of the drill rod 1. The middle part of drilling rod 1 is equipped with notes liquid channel 17, be equipped with the notes liquid hole 18 that communicates with notes liquid channel 17 on the tip of drilling bit 2, be equipped with at least a set of location inserted block 11 along its axis on the body of rod of drilling rod 1, every location inserted block 11 of group includes that two are the location inserted block 11 of axial symmetry fixing in the body of rod both sides of drilling rod 1, be equipped with positioning screw hole 12 on the location inserted block 11, insert on location inserted block 11 through the positioning slot 6 of reamer bit 3, then pass behind fastening screw hole 7 and the positioning screw hole 12 in proper order through the bolt, can realize reamer bit 3 and install on drilling rod 1, form the reaming drilling tool. Preferably, a plurality of sets of positioning inserts 11 are arranged on the rod body of the drill rod 1, so that only one reaming bit 3 can be installed on the drill rod 1, and then the reaming bit 3 can be installed on the positioning inserts 11 at different positions to complete the position adjustment of the reaming bit 3, or the reaming bits 3 can be installed on all the positioning inserts 11 on the drill rod 1, and the diameter of the reaming bit 3 gradually increases from the end close to the drilling bit 2 to the end far away from the drilling bit 2, thereby forming a drilled hole with the diameter gradually increasing in a step shape.
The working process comprises the following steps:
when one-level step hole needs to be drilled, after only installing reamer bit 3 on drill rod 1 corresponding location inserted block 11, then the one end orientation that is equipped with reamer bit 2 with drill rod 1 is waited to punch and is gone up to punch and can be processed out drilling section (aperture section), then along with drill rod 1 deepens gradually, reamer bit 3 begins to contact gradually and waits to punch, then process out reaming section (large pore section) gradually, thereby can once only accomplish drilling and reaming operation, and can guarantee that macropore and aperture still keep the coincidence of axis after the reaming, construction easy operation, and can guarantee the machining precision.
When more steps of holes need to be drilled, the expanding drill bits 3 with different diameters are installed, and then drilling is carried out, wherein the process is similar and is not repeated.
In this embodiment, as shown in fig. 1 to 7, the end of the drill rod 1 is provided with a threaded mounting hole 19 communicating with the liquid injection channel 17. The end part of the drilling bit 2 is provided with a threaded rod 20, the threaded rod 20 is matched with the thread of the mounting threaded hole 19, and the middle part of the threaded rod 20 is provided with a circulation channel communicated with the liquid injection hole 18. When the threaded rod 20 is screwed into the mounting threaded bore 19, the flow-through channel can communicate with the filling channel 17, so that the filling opening 18 communicates with the filling channel 17.
In this embodiment, as shown in fig. 1 to 7, the drilling bit 2 includes a tool post 21 and a blade 22, the end of the blade 22 is provided with a blade 23, and one end of the blade 22 away from the blade 23 is fixed on the end of the tool post 21. The liquid injection hole 18 is arranged in the middle of the knife platform 21, and the knife wings 22 are axially symmetrically arranged on two sides of the liquid injection hole 18. The threaded rod 20 is coaxially fixed to the end of the knife platform 21 remote from the knife blade 22.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the foregoing, the description is not to be taken in a limiting sense.
Claims (10)
1. The utility model provides a reamer bit, its characterized in that can constitute including mutual lock the assembly body of reamer bit, the assembly body is including the equipment base that is equipped with the reamer, be equipped with the drilling rod holding tank that is used for the lock to become to hold the through-hole on the lock face of equipment base, the inner wall that holds the through-hole and the laminating of the body of rod outer wall of drilling rod, be equipped with the location inserted block that is the axial symmetry on the body of rod of drilling rod, be equipped with the confession in the drilling rod holding tank the location slot that the location inserted block was pegged graft, be equipped with on the equipment base and supply the bolt to penetrate the fastening screw hole of location slot, be equipped with on the location inserted block and be used for the confession bolt threaded connection's location screw hole.
2. The reamer bit of claim 1, wherein the fastening surface of the assembly base is provided with a plug connector and a plug groove respectively arranged at two sides of the drill rod accommodating groove.
3. The reamer bit as claimed in claim 2, wherein a mounting groove for receiving a head of the bolt is formed in a surface of the assembly base away from the fastening surface, the mounting groove is communicated with the fastening threaded hole, and a depth of the mounting groove is greater than or equal to a thickness of the head of the bolt.
4. The reamer bit of claim 1, wherein the reamer bit comprises tool holders with tool bits, the tool holders are sequentially and intermittently fixed at the end of the assembly base, and the spaces between adjacent tool holders form chip removal grooves.
5. The reamer bit of claim 4, wherein a bit mounting bracket is provided at an end of the cutting surface of the bit holder away from the assembly base, the bit mounting bracket being perpendicular to the axis of the drill rod, the bits being mounted side by side on the bit mounting bracket.
6. A reamer bit according to claim 5, wherein the seat is a sector block.
7. A reamer bit according to claim 1, wherein the assembly base is cylindrical or frustoconical.
8. The hole expanding drill tool for installing the hole expanding drill bit according to any one of claims 1 to 7, comprising a drill rod and a drilling drill bit arranged at the end part of the drill rod, wherein a liquid injection channel is arranged at the middle part of the drill rod, a liquid injection hole communicated with the liquid injection channel is arranged at the end part of the drilling drill bit, the positioning insert block is axially symmetrical on the rod body of the drill rod, and the positioning threaded hole is arranged on the positioning insert block.
9. The reaming drilling tool according to claim 8, wherein the end of the drill rod is provided with a mounting threaded hole communicated with the injection channel, the end of the drilling bit is provided with a threaded rod in threaded fit with the mounting threaded hole, and the middle of the threaded rod is provided with a circulation channel for the injection hole to communicate with the injection channel.
10. The reaming drilling tool according to claim 9, wherein the drilling bit comprises a cutter platform and blades for fixing the end of the cutter platform, the end of each blade is provided with a blade, the liquid injection hole is formed in the middle of the cutter platform, the blades are symmetrically arranged on two sides of the liquid injection hole, and the threaded rod is coaxially fixed at one end, far away from the blades, of the cutter platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211065627.6A CN115341852A (en) | 2022-08-30 | 2022-08-30 | Expanding drill bit and expanding drilling tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211065627.6A CN115341852A (en) | 2022-08-30 | 2022-08-30 | Expanding drill bit and expanding drilling tool thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115341852A true CN115341852A (en) | 2022-11-15 |
Family
ID=83955135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211065627.6A Pending CN115341852A (en) | 2022-08-30 | 2022-08-30 | Expanding drill bit and expanding drilling tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115341852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677322A (en) * | 2023-08-04 | 2023-09-01 | 中国建筑第六工程局有限公司 | Variable-aperture drill rod for underground engineering rock-soil body drilling and drilling method |
-
2022
- 2022-08-30 CN CN202211065627.6A patent/CN115341852A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677322A (en) * | 2023-08-04 | 2023-09-01 | 中国建筑第六工程局有限公司 | Variable-aperture drill rod for underground engineering rock-soil body drilling and drilling method |
| CN116677322B (en) * | 2023-08-04 | 2023-11-10 | 中国建筑第六工程局有限公司 | Variable-aperture drill rod for underground engineering rock-soil body drilling and drilling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115341852A (en) | Expanding drill bit and expanding drilling tool thereof | |
| CN108723715B (en) | Method for processing nozzle shell by using bar stock | |
| CN112576292A (en) | Prestressed hollow grouting anchor rod and construction method | |
| CN201102091Y (en) | Gang tool for step hole process | |
| CN210817502U (en) | Flat-bottom counter bore boring cutter | |
| CN212003059U (en) | Drill rod connecting drill tail | |
| CN212003058U (en) | Drill rod connecting sleeve | |
| CN211144378U (en) | Core tube drill bit | |
| CN211340762U (en) | End plate and concrete pile with same | |
| CN203495254U (en) | Countersink | |
| CN214819796U (en) | Dry drilling concrete cutter head convenient to dismantle | |
| CN218030117U (en) | Special mill shoe for horizontal well drilling plug | |
| CN215804380U (en) | Internal and external three-tooth reaming composite sheet rib tip drill bit | |
| CN220862933U (en) | Drilling, tapping and reversing integrated multifunctional thread milling cutter | |
| CN214161657U (en) | Composite thread drill bit | |
| CN212918458U (en) | Drilling jig suitable for thrust chamber circular pipe section | |
| CN217055037U (en) | Novel large-caliber diamond combined drill bit | |
| CN216068095U (en) | Durable composite PCD material drill bit | |
| CN218503887U (en) | Preparation positioning tool applied to wear-resistant drill bit | |
| CN212761324U (en) | Integrated cutter bar | |
| CN215431686U (en) | Four corners drill bit with installation positioner | |
| CN220700068U (en) | Deep hole processing tool bit for optical fiber preform and equipment thereof | |
| CN216811570U (en) | Cone-shaped positioning rock drilling bit | |
| CN213410471U (en) | Assembled step drill | |
| CN216938579U (en) | Drilling tool capable of chamfering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |