CN209586275U - The improved plug pin of rock bit - Google Patents
The improved plug pin of rock bit Download PDFInfo
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- CN209586275U CN209586275U CN201822259905.7U CN201822259905U CN209586275U CN 209586275 U CN209586275 U CN 209586275U CN 201822259905 U CN201822259905 U CN 201822259905U CN 209586275 U CN209586275 U CN 209586275U
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- plug pin
- groove
- groove surface
- eccentric mounting
- ontology
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Abstract
The utility model belongs to Petroleum Machinery Industry field, more particularly, to a kind of improved plug pin of rock bit, including plug pin ontology (1)；Plug pin ontology (1) the front end side is equipped with several guide grooves (2), rear end bottom is equipped with eccentric mounting (3), internal screw thread (5) are equipped in the eccentric mounting (3), the groove surface (4) of plug pin front end and the groove surface of teeth palm bearing are integrally formed and process, and the present apparatus realizes the function that plug pin groove anchor ring is processed together with the steel ball rolling channel slot of bit leg.The anchor ring consistency of groove in this way is good, and groove position face paste close it is closer so that steel ball rotate at work it is more smooth, in addition, plug pin seals plug pin hole, in the groove surface of smart car teeth palm bearing, interrupted processing is avoided, cutter tipping is avoided, the cost of charp tool can be greatly reduced.
Description
Technical field
The utility model belongs to Petroleum Machinery Industry field, more particularly, to a kind of improved plug pin of rock bit.
Background technique
Existing plug pin groove surface is completed using the method for artificial reconditioning, and plug pin after bit leg journel finishing
Two sides are angled, and the gap in concave surface is larger, such production technology low efficiency, as shown in Fig. 2, the track groove of steel ball is annulus
Face, hand grinding are difficult reconditioning to consistent with the track groove annulus of machine tooling；And hand grinding large labor intensity, and easily produce
Fecula dirt, meanwhile, hand grinding is easy to hurt the anchor ring after finishing, it is therefore desirable to design a kind of plug pin and roller axle concave
The integrally formed plug pin of slot.
Utility model content
It is improved to propose a kind of rock bit for the problems in above-mentioned background technique of effective solution for the utility model
Plug pin, specific technical solution are as follows:
A kind of improved plug pin of rock bit, including plug pin ontology (1)；The plug pin ontology (1) is if front end side is equipped with
Dry guide groove (2), rear end bottom are equipped with eccentric mounting (3), are equipped with internal screw thread (5) in the eccentric mounting (3), the groove of plug pin front end
The groove surface of face (4) and teeth palm bearing, which is integrally formed, to be processed；Compared with prior art, the utility model has the beneficial effects that:
The present apparatus realizes the function that plug pin groove anchor ring is processed together with the steel ball rolling channel slot of bit leg.The anchor ring of groove in this way is consistent
Property it is good, and groove position face paste close it is closer so that steel ball rotate at work it is more smooth, in addition, plug pin seals plug pin
Hole avoids interrupted processing in the groove surface of smart car teeth palm bearing, avoids cutter tipping, and the cost of charp tool can be greatly reduced.
Detailed description of the invention
Fig. 1 is the utility model scheme of installation；
Fig. 2 is original plug pin scheme of installation；
Fig. 3 is the utility model planing surface figure；
Fig. 4 is utility model diagram；
Fig. 5 is the utility model schematic view of the mounting position.
In figure: plug pin ontology 1, guide groove 2, eccentric mounting 3, groove surface 4, internal screw thread 5, holding screw 6, welded disc 7, gear wheel
8, steel ball 9, bit leg 10, original plug pin 11.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and embodiment
The utility model is described in further detail；
A kind of improved plug pin of rock bit, including plug pin ontology 1；The 1 front end side of plug pin ontology is equipped with several lead
To slot 2, rear end bottom is equipped with eccentric mounting 3, and internal screw thread 5, the groove surface 4 and bit leg axis of plug pin front end are equipped in the eccentric mounting 3
The groove surface held is integrally formed processing；
Pedestal is made into eccentric structure by plug pin, by fixed eccentric mounting, plug pin groove surface is made to be not easy to revolve in processing
Turn, there is stronger stability, plug pin semi-finished product are fitted into the plug pin hole of the bit leg of non-smart car bearing, the conical surface and tooth of plug pin
The taper-face contact of the palm positions, behind held out against with holding screw, will be the groove anchor ring one of plug pin when smart car bit leg track groove
It rises and processes.When dismantling plug pin, first holding screw is unloaded down, then the threaded hole of plug pin large end face is screwed into a Screw
In, easily plug pin is pulled out.
The manufacturing procedure of the present apparatus: plug pin semi-finished product are fitted into the plug pin hole of the bit leg of non-smart car bearing, the cone of plug pin
The positioning of the taper-face contact of face and bit leg, behind held out against with holding screw, will be the groove of plug pin circle when smart car bit leg track groove
Anchor ring processes together.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of utility model.
Claims (1)
1. a kind of improved plug pin of rock bit, including plug pin ontology (1)；It is characterized in that, plug pin ontology (1) front end side
Face is equipped with several guide grooves (2), and rear end bottom is equipped with eccentric mounting (3), is equipped with internal screw thread (5) in the eccentric mounting (3), before plug pin
The groove surface (4) at end and the groove surface of teeth palm bearing are integrally formed and process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259905.7U CN209586275U (en) | 2018-12-30 | 2018-12-30 | The improved plug pin of rock bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822259905.7U CN209586275U (en) | 2018-12-30 | 2018-12-30 | The improved plug pin of rock bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209586275U true CN209586275U (en) | 2019-11-05 |
Family
ID=68351427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822259905.7U Active CN209586275U (en) | 2018-12-30 | 2018-12-30 | The improved plug pin of rock bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209586275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322081A (en) * | 2020-03-30 | 2020-06-23 | 苏州思丹孚钻具有限公司 | Novel TBM shield hobbing cutter device |
-
2018
- 2018-12-30 CN CN201822259905.7U patent/CN209586275U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322081A (en) * | 2020-03-30 | 2020-06-23 | 苏州思丹孚钻具有限公司 | Novel TBM shield hobbing cutter device |
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