CN203257331U - Coal mine drilling construction drill bit - Google Patents
Coal mine drilling construction drill bit Download PDFInfo
- Publication number
- CN203257331U CN203257331U CN 201320178936 CN201320178936U CN203257331U CN 203257331 U CN203257331 U CN 203257331U CN 201320178936 CN201320178936 CN 201320178936 CN 201320178936 U CN201320178936 U CN 201320178936U CN 203257331 U CN203257331 U CN 203257331U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- coal mine
- starter
- bit
- drilling construction
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a coal mine drilling construction drill bit which is characterized by comprising a guiding drill bit (1) and a hole expanding drill bit (2), wherein the diameter of the guiding drill bit (1) is smaller than that of the hole expanding drill bit (2). The guiding drill bit (1) can be integrally connected with the hole expanding drill bit (2) through threads. The coal mine drilling construction drill bit can ensure that the drilling direction of a drill hole is not deflected and one-time forming of the drill hole can be achieved.
Description
Technical field
The utility model relates to a kind of coal mine drilling construction equipment, relates in particular to a kind of coal mine drilling construction drill bit.
Background technology
The coal and gas outburst mine work plane layer-through drilling that needs to construct before back production carries out regional extinction; owing to be subjected to the impact of the factors such as geological conditions and drilling rod deadweight; in the construction less boring in inclination angle often the hole scattering phenomenon can appear; there are deviation in the actual borehole bottom location and the design that cause holing, can not reach expection construction purpose and effect.
At present main Adopts measure is to reduce the speed of application of holing and use twist drill rods to do guiding: at first require the rig worker suitable to pressing in work progress, decompression is crept into; Secondly increase a twist drill rods in the drill bit back, because the drill bit that uses is identical with the twist drill rods external diameter, targeting part just can effectively contact with hole wall like this, prevents that drill bit from arbitrarily swinging, and can be good at making drilling rod to protect and directly creeps into.Because decompression is crept into, reduced to a certain extent the degree of skewness of boring, but also greatly affected the efficient of drilling construction simultaneously.Secondly, at the twist drill rods that increases later of drill bit as protecting the steering tool that directly creeps into, from the effect of using, the moulding of boring has obtained very large improvement, but, because the friction of twist drill rods and hole wall causes twist drill rods to damage aggravation, increased the frequency that twist drill rods is changed, equally the efficient of probing affected.
The utility model content
The technical problems to be solved in the utility model provides a kind ofly can guarantee not deflection of the drilling direction of holing, and realizes the one-time formed coal mine drilling construction of boring drill bit.
A kind of coal mine drilling construction drill bit, it is characterized in that: comprise starter and reaming bit, the diameter of starter is less than the diameter of reaming bit, and starter can be threaded connection with reaming bit and be integral.
The front end of described starter has 3 starter cutting edges, and the middle part is the starter body, and end is the external screw thread connector.
Described drill edge is circumferentially uniform along the head main shaft of starter.
The diameter of described starter is 94mm.
Described reaming bit is comprised of the reaming bit cutting edge that is connected and reaming bit body.
Described reaming bit cutting edge has 4, and is circumferentially uniform along the head main shaft of reaming bit.
Described reaming bit body is the open circles ring body, connects screw thread in torus upper end inwall has, and connects screw thread in torus lower end inwall has.
The diameter of described reaming bit is 108mm.
Compared with prior art, the beneficial effect that the utlity model has is:
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the starter structural representation of a kind of coal mine drilling construction of the utility model drill bit.
Fig. 2 is the reamer bit structure schematic diagram of a kind of coal mine drilling construction of the utility model drill bit.
Fig. 3 is the combining structure schematic diagram of a kind of coal mine drilling construction of the utility model drill bit.
The specific embodiment
Such as Fig. 1～shown in Figure 3, a kind of coal mine drilling construction drill bit comprises starter 1 and reaming bit 2, and the diameter of starter 1 is less than the diameter of reaming bit 2, and starter 1 can be threaded connection with reaming bit 2 and be integral.The front end of described starter 1 has 3 starter cutting edges 11, and the middle part is starter body 12, and end is external screw thread connector 13.Described drill edge 11 is circumferentially uniform along the head main shaft of starter 1.The diameter of described starter 1 is 94mm.Described reaming bit 2 is comprised of the reaming bit cutting edge 21 that is connected and reaming bit body 22.Described reaming bit cutting edge 21 has 4, and is circumferentially uniform along the head main shaft of reaming bit 2.Described reaming bit body 22 is the open circles ring body, connects screw thread 23 in torus upper end inwall has, and connects screw thread 24 in torus lower end inwall has.The diameter of described reaming bit is 108mm.
Claims (8)
1. coal mine drilling construction drill bit, it is characterized in that: comprise starter (1) and reaming bit (2), the diameter of starter (1) is less than the diameter of reaming bit (2), and starter (1) can be threaded connection with reaming bit (2) and be integral.
2. according to a kind of coal mine drilling construction drill bit claimed in claim 1, it is characterized in that: the front end of described starter (1) has 3 starter cutting edges (11), and the middle part is starter body (12), and end is external screw thread connector (13).
3. according to a kind of coal mine drilling construction drill bit claimed in claim 2, it is characterized in that: described drill edge (11) is circumferentially uniform along the head main shaft of starter (1).
4. according to a kind of coal mine drilling construction drill bit claimed in claim 1, it is characterized in that: the diameter of described starter (1) is 94mm.
5. according to a kind of coal mine drilling construction drill bit claimed in claim 1, it is characterized in that: described reaming bit (2) is comprised of the reaming bit cutting edge (21) that is connected and reaming bit body (22).
6. according to a kind of coal mine drilling construction drill bit claimed in claim 5, it is characterized in that: described reaming bit cutting edge (21) has 4, and is circumferentially uniform along the head main shaft of reaming bit (2).
7. according to a kind of coal mine drilling construction drill bit claimed in claim 5, it is characterized in that: described reaming bit body (22) is the open circles ring body, connects screw thread (23) in torus upper end inwall has, and connects screw thread (24) in torus lower end inwall has.
8. according to a kind of coal mine drilling construction drill bit claimed in claim 1, it is characterized in that: the diameter of described reaming bit (2) is 108mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178936 CN203257331U (en) | 2013-04-11 | 2013-04-11 | Coal mine drilling construction drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178936 CN203257331U (en) | 2013-04-11 | 2013-04-11 | Coal mine drilling construction drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257331U true CN203257331U (en) | 2013-10-30 |
Family
ID=49469908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320178936 Expired - Fee Related CN203257331U (en) | 2013-04-11 | 2013-04-11 | Coal mine drilling construction drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257331U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106661924A (en) * | 2014-08-20 | 2017-05-10 | 三菱综合材料株式会社 | Excavation tool |
| CN111395969A (en) * | 2020-04-24 | 2020-07-10 | 杭州图强工程材料有限公司 | Combined drill bit structure for drilling anchor rod/anchor cable and construction method thereof |
| CN113846972A (en) * | 2021-10-26 | 2021-12-28 | 国能神东煤炭集团有限责任公司 | Hole expanding device and hole expanding method |
-
2013
- 2013-04-11 CN CN 201320178936 patent/CN203257331U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106661924A (en) * | 2014-08-20 | 2017-05-10 | 三菱综合材料株式会社 | Excavation tool |
| CN111395969A (en) * | 2020-04-24 | 2020-07-10 | 杭州图强工程材料有限公司 | Combined drill bit structure for drilling anchor rod/anchor cable and construction method thereof |
| CN113846972A (en) * | 2021-10-26 | 2021-12-28 | 国能神东煤炭集团有限责任公司 | Hole expanding device and hole expanding method |
| CN113846972B (en) * | 2021-10-26 | 2023-08-11 | 国能神东煤炭集团有限责任公司 | Reaming device and reaming method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203257331U (en) | Coal mine drilling construction drill bit | |
| CN204200083U (en) | A kind of drill stem type is with the micro-hole reaming tool of brill | |
| CN203097722U (en) | Tapered gauge PDC drill bit | |
| CN201420507Y (en) | Irregular polygon grooving drill rod | |
| CN105428838A (en) | Temporary ground rod for electrical system | |
| CN104131787A (en) | Tower-type drill bit | |
| CN204920795U (en) | Combined broaching bit for mine | |
| CN203547543U (en) | Mini-sized coring bit with sharp and round tooth | |
| CN202726135U (en) | Inclined plane drill with aspirator | |
| CN208303976U (en) | Reaming fluted drill | |
| CN202441260U (en) | Oil field coring bit | |
| CN102383738A (en) | Method and device for improving deep hole forming rate of bedding layer of coal mine | |
| CN204238858U (en) | A kind of mining reaming tool based on tank | |
| CN204053028U (en) | A kind of step deep hole bore cutter | |
| CN203822161U (en) | Connecting device of drill bit | |
| CN204139967U (en) | Deflecting borehole-enlarging drilling tool | |
| CN204163652U (en) | A kind of three rib drill stems | |
| CN205036299U (en) | Roof bolting bit | |
| CN204492664U (en) | Water exploring drill head | |
| CN202491315U (en) | Two-section type percussion bit | |
| CN203559837U (en) | Coring pipe structure used for drilling tool | |
| CN204640363U (en) | Manual drilling instrument | |
| CN203383734U (en) | Expanding bit | |
| CN201751526U (en) | Drill column assembly with eccentric shaft joint | |
| CN206287354U (en) | A kind of glass perforating drill with chamfering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20140411 |