CN202300234U - Combined-type drilling tool - Google Patents
Combined-type drilling tool Download PDFInfo
- Publication number
- CN202300234U CN202300234U CN2011204350928U CN201120435092U CN202300234U CN 202300234 U CN202300234 U CN 202300234U CN 2011204350928 U CN2011204350928 U CN 2011204350928U CN 201120435092 U CN201120435092 U CN 201120435092U CN 202300234 U CN202300234 U CN 202300234U
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- China
- Prior art keywords
- drill bit
- drilling
- connecting rod
- rod
- drilling tool
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- Expired - Fee Related
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Abstract
The utility model discloses a combined-type drilling tool which comprises a drill bit and a drilling rod which is matched with the drill bit for use, wherein the lower end of the drilling rod is provided with a connecting rod; and the tail part of the drill bit is provided with a connecting hole which is matched with the connecting rod for use. The combined-type drilling tool with such a structure can not be restricted by the diameter of the drilling rod because the drill bit is provided with the connecting hole; not only can the range of an open pore be enlarged, but also the wall thickness of the pore is ensured; and the service life of the drilling tool is prolonged.
Description
Technical field
The utility model relates to a kind of drilling tool, the combined drilling tool of especially a kind of utilization and nonmetallic mineral exploitation.
Background technology
A kind of twist shape drilling tool of the general use of nonmetallic mineral layer probing spiral drilling machine adopts the high-quality carbon junction steel to process usually, is applicable to the boring of nonmetallic mineral layer, is the desirable necessary tool of non-underground metal mining.This twist shape drilling tool has solid (dry type drilling rod) and hollow (wet type drilling rod) two big types, and Φ 26 is arranged respectively, and Φ 28, and Φ 30, and Φ 38, specification diameters such as Φ 40, and according to the needs of drilling, length is generally at 0.5-6M.Spiral drilling process technology is adopted in this drilling tool and the supporting use of all kinds of pneumatic rigs against outburst, and it is fast to have rate of penetration, boring forming, characteristics such as drilling efficiency height.More traditional rate of penetration speeds greatly.With in the nonmetallic mineral layer driving because of drilling operation has dropped to minimum level to the influence of driving progress, be widely used in probing and exploitations such as colliery, 77F3 cream ore deposit.
As shown in Figure 1, existing solid twist shape drilling tool comprises drilling rod 2 and drill bit 1, and drill bit 1 afterbody is provided with connecting rod 3; Drilling rod 2 is provided with the connecting hole 5 that cooperates with said connecting rod 3, and the groove 4 that forms of the drainage face by on the drilling rod 2 that cooperates with said connecting rod 3.When using, utilize locking pin that drill bit 1 and drilling rod 2 is sealed.Because drilling rod 1 diameter, the connecting hole 5 on the drilling rod 1 can not leave too much.If think that the connecting rod 3 on the drill bit 1 cooperates with it, connecting rod 3 certainly will also can be thinner, and intensity is low excessively like this, very easy damage.So the section of cooperation of the connecting hole 5 on the connecting rod 3 on the existing drill bit 1 and the drilling rod 2 is generally thinner, and is cylindrical, does not bear torsion during use; And the upper end of connecting rod 3 is generally thicker, and the groove 5 that refluence face forms on shape and the drilling rod 2 matches.When rotating, mainly be that two walls by groove 4 bear torsion, drive drill bit and rotate.
But because the wall thickness of 4 liang of walls of the formed groove of drainage face is also thinner relatively, and does not have supporting walls between two walls, existing drilling rod 2 still damages very easily, and the life-span is not long.
The utility model content
To the technical problem of above-mentioned existence, the utility model provides a kind of combined drilling tool, increases the intensity of connecting rod and connecting hole, increases the service life.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of combined drilling tool comprises drill bit and the drilling rod that is used with said drill bit, and described drilling rod lower end is provided with connecting rod; The drill bit afterbody is provided with the connecting hole that cooperates with said connecting rod.
As a kind of improvement, also comprise a locking pin, the pin-and-hole that cooperates with locking pin is arranged on described connecting rod and the drill bit.
As a kind of preferred, described connecting rod is cubic cylindricality, and described connecting hole is the shape that cooperates with connecting rod.
The beneficial effect of the utility model is:
Combined drilling tool with said structure because connecting hole is set, can not receive the restriction of drill pipe diameter on drill bit.Can increase the scope of perforate, the wall thickness in hole also is guaranteed simultaneously.And the connecting rod on the drilling rod also can be provided with its diameter to greatest extent.The effective like this intensity that has increased connecting rod and connecting hole has prolonged application life of drilling tool.On drill bit and drilling rod, pin-and-hole is set, and utilizes locking pin with matching, can make drill bit and drilling rod couple together difficult drop-off very easily.Be arranged to connecting rod and connecting hole square, can be better stressed, can the better driving drill bit when connecting rod rotates.
Description of drawings
Fig. 1 is the sketch map of existing twist shape drilling tool.
Fig. 2 is the sketch map of the utility model combined drilling tool.
Mark among the figure: 1 drill bit, 2 drilling rods, 3 connecting rods, 4 grooves, 5 connecting holes, 6 drill bits, 7 drilling rods, 8 connecting holes, 9 connecting rods, 10 pin-and-holes, 11 pin-and-holes.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 2:
The utility model comprises drill bit 6 and the drilling rod 7 that is used with said drill bit 6, and described drilling rod 7 lower ends are provided with connecting rod 9; Drill bit 6 afterbodys have the connecting hole 8 that cooperates with said connecting rod 9.
Pin-and-hole 11 and pin-and-hole 10 can be set on connecting rod and the drill bit, utilize locking pin to cooperate with above-mentioned pin-and-hole 10, pin-and-hole 11, better sealed drill bit and drilling rod.
Connecting rod 9 can be set to cubic cylindricality, and described connecting hole 8 also is set to the shape that cooperates with connecting rod 9.
Because connecting hole 8 is arranged on the drill bit 6, do not receive the restriction in drilling rod 7 bars footpath, can be when taking into account wall thickness hole diameter enlargement.And the size of the connecting rod 9 on the drilling rod 7 also can need not be considered wall thickness to greatest extent near the bar footpath.Like this, both increase the size of connecting rod 9, increased the wall thickness of connecting hole 8 again, and made both intensity all increase greatly, prolonged the application life of drilling tool.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1. combined drilling tool, comprise drill bit (6) and with the drilling rod (7) that said drill bit (6) is used, it is characterized in that: described drilling rod (7) lower end is provided with connecting rod (9); Drill bit (6) afterbody is provided with the connecting hole (8) that cooperates with said connecting rod (9).
2. combined drilling tool according to claim 1 is characterized in that: also comprise a locking pin, on described connecting rod (9) and the drill bit (6) pin-and-hole that cooperates with locking pin is arranged.
3. combined drilling tool according to claim 1 is characterized in that: described connecting rod (9) is cubic cylindricality, and described connecting hole (8) is the shape that cooperates with connecting rod (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204350928U CN202300234U (en) | 2011-11-07 | 2011-11-07 | Combined-type drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204350928U CN202300234U (en) | 2011-11-07 | 2011-11-07 | Combined-type drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300234U true CN202300234U (en) | 2012-07-04 |
Family
ID=46369156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204350928U Expired - Fee Related CN202300234U (en) | 2011-11-07 | 2011-11-07 | Combined-type drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804670A (en) * | 2016-03-11 | 2016-07-27 | 柳超 | Drill rod connecting structure |
-
2011
- 2011-11-07 CN CN2011204350928U patent/CN202300234U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804670A (en) * | 2016-03-11 | 2016-07-27 | 柳超 | Drill rod connecting structure |
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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: 20120704 Termination date: 20121107 |