CN2161716Y - Convex prism type PDC drill bit puller - Google Patents
Convex prism type PDC drill bit puller Download PDFInfo
- Publication number
- CN2161716Y CN2161716Y CN 93230632 CN93230632U CN2161716Y CN 2161716 Y CN2161716 Y CN 2161716Y CN 93230632 CN93230632 CN 93230632 CN 93230632 U CN93230632 U CN 93230632U CN 2161716 Y CN2161716 Y CN 2161716Y
- Authority
- CN
- China
- Prior art keywords
- drill bit
- pdc drill
- utility
- model
- convex prism
- 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 common PDC drill bit pullers are all in a quadrate external shape and endure great bending load when works, and are easy to be damaged. The utility model is formed in the way that the middle of a rectangle main body provided with a gap and is added with a convex prism structure, so the PDC drill bit puller is free from bending load. Thus, the service life of the utility model is prolonged. The utility model also has the advantages of simple structure, light weight and easy operation.
Description
The utility model belongs to the architecture advances of shackle device on the PDC drill bit.
The profile of shackle device is square on the general PDC drill bit, and size and corresponding master bushing consistent size, this structure make that the shackle device is bearing bigger bending load on the PDC drill bit when work, thereby damage easily.
The utility model has carried out architecture advances at above-mentioned defective to it.
The utility model is to have gap in the middle of the employing rectangle main body ［ 1 ］ to add fin ［ 2 ］ structure, and the length of fin ［ 2 ］ equates with the last breaker slot width of PDC drill bit, thereby eliminated bending load fully.
Figure of description:
Shackle device front view on Fig. 1, a kind of fin formula PDC drill bit
Shackle device left view on Fig. 2, a kind of fin formula PDC drill bit
Description of drawings:
1, main body 2, fin 3, handle
Now in conjunction with Figure of description, the utility model will be further described: the utility model is the vertical plane of symmetry on the whole with MM, and two fins ［ 2 ］ all are symmetrical in the vertical plane of NN in the longitudinal direction.The length of two fins ［ 2 ］ equates with the last breaker slot width of PDC drill bit.Owing to be symmetrical structure, only narrate the vertical plane of MM left part below:
Before using the utility model, at first the utility model is installed in the last breaker slot of PDC drill bit, together put into the rotating disk master bushing then.
When detaining on to the PDC drill bit, the utility model is subjected to an extruding force from the PDC drill bit at the C place, is subjected to a reaction force from master bushing simultaneously at the B place.These two power equal and opposite in directions at C place and B place, direction is opposite and act on the same vertical plane, so the utility model load by bending not.When to the shackle of PDC drill bit, the utility model power that is squeezed at D place and A place, the power that this two place is subjected to also is that equal and opposite in direction, direction are opposite, acts on the same vertical plane, so also load by bending not of the utility model.
Because the utility model is in when work load by bending not, thereby prolonged application life, and since simple in structure, in light weight, made things convenient for operation.
Claims (2)
1, shackle device on a kind of fin formula PDC drill bit is characterized in that rectangular body [1] centre has gap and adds fin [2] structure.
2, shackle device on the fin formula PDC drill bit according to claim 1 is characterized in that the length of fin ［ 2 ］ equates with the last breaker slot width of PDC drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230632 CN2161716Y (en) | 1993-04-03 | 1993-04-03 | Convex prism type PDC drill bit puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230632 CN2161716Y (en) | 1993-04-03 | 1993-04-03 | Convex prism type PDC drill bit puller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2161716Y true CN2161716Y (en) | 1994-04-13 |
Family
ID=33807246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93230632 Expired - Fee Related CN2161716Y (en) | 1993-04-03 | 1993-04-03 | Convex prism type PDC drill bit puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2161716Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204203A (en) * | 2016-12-17 | 2018-06-26 | 中国石油天然气集团公司 | A kind of adjustable bit breaker |
-
1993
- 1993-04-03 CN CN 93230632 patent/CN2161716Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204203A (en) * | 2016-12-17 | 2018-06-26 | 中国石油天然气集团公司 | A kind of adjustable bit breaker |
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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 |