CN2679344Y - Bit with combined connection hole - Google Patents
Bit with combined connection hole Download PDFInfo
- Publication number
- CN2679344Y CN2679344Y CN 200320104717 CN200320104717U CN2679344Y CN 2679344 Y CN2679344 Y CN 2679344Y CN 200320104717 CN200320104717 CN 200320104717 CN 200320104717 U CN200320104717 U CN 200320104717U CN 2679344 Y CN2679344 Y CN 2679344Y
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drilling
- connecting hole
- drilling rod
- section
- 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
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- Earth Drilling (AREA)
Abstract
The utility model discloses a drilling head with a combined connecting hole belonging to the technical field of the drilling head of mine exploring and stone material exploring. The connecting hole in the trousers body (2) of the drilling head comprises a cone hole section (3) and a screw hole section (4). The cone hole section (3) is outboard and the screw hole section (4) is inward. The utility model has reliable connection of the drilling head and the drilling rod, high drilling rate, drilling rod breaking resistance, drilling rod waist breaking resistance, trousers body spalling resistance, easy processing and easy disassembling.
Description
Technical field
The utility model belongs to the drill bit structure technical field of exploitated ore and stone material.
Background technology
Mining at present, quarrying and the used drill bit of processing of stone, the connected mode of its drill bit and drilling rod is nothing more than two classes: the first kind is that the connecting hole of drill bit trousers body portion is a bellmouth, the link of corresponding drilling rod is also for taper, the tapering point of drilling rod inserted strike in the taper connection hole of drill bit tightly to get final product; Second class is all to process corrugated thread or reverse sawtooth screw thread or T type screw thread in whole connecting hole inside, and the link of drilling rod is also processed respective threads, by being threaded of these special shapes drill bit firmly is connected with drilling rod.First kind drill bit, the as easy as rolling off a log disconnected waist of disrumpent feelings, drill bit and the trousers cubical expansion of drilling rod cone of causing splits in the Drilling process, and the failure ratio of drill bit is higher, and drilling rod skids in drill bit easily, makes that drilling speed is difficult to improve; Also often because the impact force that firmness change changed of rock causes drill bit to be difficult to dismounting.The second class drill bit, the screw thread of its special shape need special cutter processing, and difficulty of processing is bigger, and cost is higher.
Summary of the invention
The purpose of this utility model provides a kind of drill bit to be connected with drilling rod reliably in order to overcome above-mentioned the deficiencies in the prior art just, drilling speed is high, be difficult for causing that drilling rod is disrumpent feelings, the disconnected waist of drill bit and trousers cubical expansion split, be easy to process and the drill bit of the band combined type connecting hole that is easy to dismantle.
The purpose of this utility model is that following technical scheme realizes.
The drill bit of this band combined type connecting hole, its connecting hole that is connected with drilling rod is combined by one section taper hole and one section screw, and the taper hole section is outer, and the screw section is inner.
The screw section is the cylindricality screw; In addition, also be processed with the flat mouth of symmetry in the outer rim of trousers body.
The utility model adopts the connecting hole mode of taper hole and screw combination, not only kept former bellmouth advantage easy to connect, the screw section that adopted has increased the withstand shocks ability of power and moment of torsion of drill bit, improved the transmission efficiency of drilling rod to drill bit, avoid skidding between drilling rod and the drill bit, made drilling speed be improved.Simultaneously, what the screw section was processed is regular screw threads, only needs can process with universal cutter on machine tool, and processing cost is low.Because being connected between drilling rod and the drill bit is one section taper connection to be added one section and is threaded, both can guarantee the reliability that connects, be convenient to dismounting again; Be convenient to dismantle drill bit flat mouthful of the symmetry of the external edge of trousers processing with spanner.
Further set forth the utility model below in conjunction with Figure of description.
Description of drawings
Fig. 1 is that master of the present utility model looks partial sectional view;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation with the drilling rod of the utility model adapted.
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model includes drill bit 1 and trousers body 2, and the connecting hole in the trousers body is combined by outer taper hole section 3 and inner screw section 4, and the screw section is cylindrical, and the screw thread of screw section processing is regular screw threads.Process the flat mouth 5 of a pair of symmetry in the outer rim of trousers body 2, so that dismantle drill bit with spanner.For being connected, as shown in Figure 3 the link of drilling rod also is processed into the combination of thread segment and conical section, during use, drilling rod is screwed in connecting hole, during dismounting, the drilling rod back-out is got final product.
Claims (3)
1, be with the drill bit of combined type connecting hole, include the trousers body (2) of drill bit (1) and band connecting hole, it is characterized in that described connecting hole is combined by taper hole section (3) and screw section (4), taper hole section (3) is outer, and screw section (4) is inner.
2, the drill bit of band combined type connecting hole according to claim 1 is characterized in that, screw section (4) is the cylindricality screw.
3, the drill bit of band combined type connecting hole according to claim 1 is characterized in that, is processed with flat mouthful (5) of symmetry in the outer rim of trousers body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320104717 CN2679344Y (en) | 2003-12-27 | 2003-12-27 | Bit with combined connection hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320104717 CN2679344Y (en) | 2003-12-27 | 2003-12-27 | Bit with combined connection hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2679344Y true CN2679344Y (en) | 2005-02-16 |
Family
ID=34580688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320104717 Expired - Fee Related CN2679344Y (en) | 2003-12-27 | 2003-12-27 | Bit with combined connection hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2679344Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110462158A (en) * | 2017-02-16 | 2019-11-15 | 通用电气(Ge)贝克休斯有限责任公司 | Use the mechanical lock mechanism of shape-memory material |
-
2003
- 2003-12-27 CN CN 200320104717 patent/CN2679344Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110462158A (en) * | 2017-02-16 | 2019-11-15 | 通用电气(Ge)贝克休斯有限责任公司 | Use the mechanical lock mechanism of shape-memory material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |