CN203394355U - Positively rotating and reversely cutting PDC combined drill - Google Patents
Positively rotating and reversely cutting PDC combined drill Download PDFInfo
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- CN203394355U CN203394355U CN201320410855.2U CN201320410855U CN203394355U CN 203394355 U CN203394355 U CN 203394355U CN 201320410855 U CN201320410855 U CN 201320410855U CN 203394355 U CN203394355 U CN 203394355U
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Abstract
The utility model discloses a positively rotating and reversely cutting PDC combined drill, which solves the problems that the common drill is slow in slag pouring and fast in wear, easily falls off and is not easily pulled out during the extra large aperture drilling construction in the prior art. The positively rotating and reversely cutting PDC combined drill comprises a guiding shaft, multiple stages of drill bodies, multiple stages of drill rod and multiple stages of drill discs, wherein each stage of drill body is connected with one end of each stage of drill rod, the other ends of the multiple stages of drill rods are evenly arranged to be connected to the multiple stages of drill discs in a concentric circle manner, the axis of each stage of drill rod is parallel to the axis of the guiding shaft, water cooling cavities are arranged between each stage of drill body and the guiding shaft, between each stage of drill rod and the guiding shaft as well as between each stage of drill disc and the guiding shaft, the water cooling cavities are communicated with one another, and the maximum cutting diameter of the posterior-stage drill body is greater than the maximum cutting diameter of the preceding-stage drill body in the multiple stages of drill bodies. By adopting the technology, lift type staged broaching can be carried out, so that extra large drilling one-time forming is realized.
Description
Technical field
This utility model relates to a kind of Combined drill of diamond, particularly relates to a kind of forward traditional method of indicating the pronunciation of a Chinese character and cuts PDC combined drill.
Background technology
At present, in some engineering construction occasion, need to get out the super large boring in 380mm to 400mm aperture.In probing field, colliery, also often run into the use occasion of super large boring.Under coal mine, for preventing gas accident employing drill bit construction drill, its objective is detection of coal seam parameter and extraction coal-bed gas.Down-hole is in construction drill process, because coal seam is buried darker, gas reset pressure increases, the existing drilling equipment in colliery, drilling rod and drill bit, its conventional boring and counter bore diameter are generally below 200mm, in super large boring procedure, common drill bit exists deslagging slow, quick abrasion, the drill bit problem such as easily come off, be not drawn out easily, thereby can not meet the needs that bore ultra-large aperture.Yet, by increase, use the forward traditional method of indicating the pronunciation of a Chinese character to cut after PDC combined drill, can the existing drilling equipment of maximum using and drilling rod, complete super large bore operation.
Utility model content
It is slow that the utility model has overcome in prior art in the ultra-large aperture drilling construction of field, colliery common drill bit deslagging, the problem that quick abrasion, drill bit easily come off, are not drawn out easily, provide a kind of can classification reaming, one-shot forming, the forward traditional method of indicating the pronunciation of a Chinese character that efficiency of construction is high cut PDC combined drill.
Technical solution of the present utility model is, provide a kind of forward traditional method of indicating the pronunciation of a Chinese character with following structure to cut PDC combined drill: to contain the axis of guide, multistage bit body, multistage drilling rod and multistage brill dish, bit bodys at different levels connect one end of drilling rods at different levels, the other end of drilling rods at different levels is connected on brill dishes at different levels so that concentric circles form is evenly distributed, the axle center of drilling rods at different levels and the axis parallel of the axis of guide, bit bodys at different levels, drilling rod, between brill dish and the axis of guide, be provided with water cooling chamber, between each water cooling chamber, communicate with each other, in described multistage bit body, the maximum cutting diameter of rear class bit body is greater than the maximum cutting diameter of prime bit body.
Multistage brill dish is circular, and the quantity of every grade of bit body is to be more than or equal to 2 natural number, and the progression of multistage bit body, multistage drilling rod and multistage brill dish is to be more than or equal to 2 natural number.Bit body is PDC cut drill.The inwall of the axis of guide has conical internal thread sleeve pipe.Water cooling chamber comprises that the sub-water cooling chamber between brill dishes at different levels, drilling rod at different levels and bit body at different levels forms and the main water cooling chamber of axis of guide inside.
Compared with prior art, the utility model forward traditional method of indicating the pronunciation of a Chinese character is cut PDC combined drill and is had the following advantages: by the use of combined drill, first with conventional bit, in tunnel, upper strata, get out small-bore boring, after drilling rod is inserted, at below lane, install the forward traditional method of indicating the pronunciation of a Chinese character and cut PDC combined drill, propose formula classification reaming, leading portion drill bit gets out after the boring of small-bore in the running, rear end drill bit reaming follow-up, realized super large boring one-shot forming, overcome in super large boring procedure common drill bit deslagging slow, quick abrasion, the drill bit problem such as easily come off, be not drawn out easily.
Accompanying drawing explanation
Fig. 1 is the structural representation of facing that the utility model forward traditional method of indicating the pronunciation of a Chinese character is cut PDC combined drill;
Fig. 2 is the left TV structure schematic diagram that the utility model forward traditional method of indicating the pronunciation of a Chinese character is cut PDC combined drill.
The specific embodiment
In accompanying drawing explanation, label 1 is one-level bit body, the 2nd, and one-level drilling rod, the 3rd, one-level brill dish, the 4th, secondary bit body, the 5th, secondary drilling rod, the 6th, secondary brill dish, the 7th, the axis of guide, the 8th, conical internal thread sleeve pipe, the 9th, water cooling chamber.
Below in conjunction with the drawings and specific embodiments, the utility model forward traditional method of indicating the pronunciation of a Chinese character being cut to PDC combined drill is described further: the utility model in the course of the work, need to first with tunnel, common jig drill Tou upper strata, get out small-bore boring, and then just drilling rod inserts, at below lane, install the utility model forward traditional method of indicating the pronunciation of a Chinese character and cut PDC combined drill, propose formula classification reaming, one-level drill bit gets out after the boring of small-bore in the running, secondary drill bit reaming follow-up, then three grades of drill bits secondary drill bit that continues again to follow up carries out reaming, by that analogy, progressively realized the one-shot forming of super large drilling construction, employingization integral body is the principle of part, and then overcome former under there is something special, in super large boring procedure, common drill bit deslagging is slow, quick abrasion, drill bit easily comes off, the problem such as be not drawn out easily.
Claims (7)
1. a forward traditional method of indicating the pronunciation of a Chinese character is cut PDC combined drill, contain the axis of guide (7), multistage bit body, multistage drilling rod and multistage brill dish, bit bodys at different levels connect one end of drilling rods at different levels, the other end of drilling rods at different levels is connected on brill dishes at different levels so that concentric circles form is evenly distributed, the axle center of drilling rods at different levels and the axis parallel of the axis of guide, bit bodys at different levels, drilling rod, between brill dish and the axis of guide (7), be provided with water cooling chamber (9), between each water cooling chamber (9), communicate with each other, it is characterized in that: in described multistage bit body, the maximum cutting diameter of rear class bit body is greater than the maximum cutting diameter of prime bit body.
2. the forward traditional method of indicating the pronunciation of a Chinese character according to claim 1 is cut PDC combined drill, it is characterized in that: described multistage brill dish is for circular.
3. the forward traditional method of indicating the pronunciation of a Chinese character according to claim 1 is cut PDC combined drill, it is characterized in that: the quantity of every grade of bit body is to be more than or equal to 2 natural number.
4. the forward traditional method of indicating the pronunciation of a Chinese character according to claim 1 is cut PDC combined drill, it is characterized in that: the progression of described multistage bit body, multistage drilling rod and multistage brill dish is to be more than or equal to 2 natural number.
5. the forward traditional method of indicating the pronunciation of a Chinese character according to claim 1 is cut PDC combined drill, it is characterized in that: described bit body is PDC cut drill.
6. the forward traditional method of indicating the pronunciation of a Chinese character according to claim 1 is cut PDC combined drill, it is characterized in that: the inwall of the described axis of guide (7) has conical internal thread sleeve pipe (8).
7. the forward traditional method of indicating the pronunciation of a Chinese character according to claim 1 is cut PDC combined drill, it is characterized in that: described water cooling chamber (9) comprises the main water cooling chamber that sub-water cooling chamber forms and the axis of guide (7) is inner between brill dishes at different levels, drilling rod at different levels and bit body at different levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320410855.2U CN203394355U (en) | 2013-07-11 | 2013-07-11 | Positively rotating and reversely cutting PDC combined drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320410855.2U CN203394355U (en) | 2013-07-11 | 2013-07-11 | Positively rotating and reversely cutting PDC combined drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394355U true CN203394355U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320410855.2U Expired - Fee Related CN203394355U (en) | 2013-07-11 | 2013-07-11 | Positively rotating and reversely cutting PDC combined drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763348A (en) * | 2015-03-05 | 2015-07-08 | 成都理工大学 | Embedded bionic nozzle type drilling and expanding integral drilling tool and drilling and hole expandin method thereof |
-
2013
- 2013-07-11 CN CN201320410855.2U patent/CN203394355U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763348A (en) * | 2015-03-05 | 2015-07-08 | 成都理工大学 | Embedded bionic nozzle type drilling and expanding integral drilling tool and drilling and hole expandin method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20140711 |
|
| EXPY | Termination of patent right or utility model |