CN203891771U - Percussive PDC (polycrystalline diamond compact) bit - Google Patents
Percussive PDC (polycrystalline diamond compact) bit Download PDFInfo
- Publication number
- CN203891771U CN203891771U CN201420251529.6U CN201420251529U CN203891771U CN 203891771 U CN203891771 U CN 203891771U CN 201420251529 U CN201420251529 U CN 201420251529U CN 203891771 U CN203891771 U CN 203891771U
- Authority
- CN
- China
- Prior art keywords
- cylindrical cavity
- hydraulic piston
- jumper bar
- bit
- drill bit
- 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 relates to a percussive PDC (polycrystalline diamond compact) bit. The center of a bit body is provided with a cylindrical cavity. A hydraulic piston punch which can vertically slide up and down is slidably mounted in the cylindrical cavity. The lower end of the hydraulic piston punch is in a hemispherical structure. An internal bevel gear sleeve is welded at the upper end of the cylindrical cavity. An external bevel gear sleeve is arranged on the outer wall of the part, located in the cylindrical cavity, of the hydraulic piston punch. A spur gear transmission sleeve driven by a motor is mounted in a vertical slide through a flat key block. A rigid stratum can be well broken by intermittent reciprocating percussion of the hydraulic piston punch; since the percussion cycle goes in this way, drilling efficiency is greatly improved, the bit experiences less wear and the requirement on equipment is lowered.
Description
Technical field
The utility model relates to the technical field of PDC drill bit, especially a kind of impact type PDC drill bit.
Background technology
In known technical field, PDC drill bit is the abbreviation of polycrystalline diamond compact bit, is the conventional a kind of drilling tool of geological drilling industry.In geological environment in probing, often need to face shallow-layer and the larger geological environment of hardness, the general mode of directly creeping into after reaming that adopts is holed, but the wearing and tearing of so easy aggravation drill bit, the effect of simultaneously creeping into is not good yet, has increased meeting of dynamical system, effect and the efficiency of if will improve, creeping into, just need to promote equipment, increase like this cost of probing.
Utility model content
The technical problems to be solved in the utility model is: overcome the problems referred to above, a kind of impact type PDC drill bit is provided, can be good at adapting to shallow-layer and the larger geological environment of hardness, reduce the wearing and tearing of PDC drill bit, reduce the requirement to power-equipment simultaneously.
The utility model solves the technical scheme that its technical problem adopts: a kind of impact type PDC drill bit, comprise drill body, center at described drill body is provided with cylindrical cavity, in described cylindrical cavity, be slidably fitted with can be vertically on, the hydraulic piston jumper bar of lower slider, the lower end of described hydraulic piston jumper bar is hemispherical dome structure, its upper end is connected with hydraulic cylinder, in the upper end of described cylindrical cavity, be welded with internal bevel gear cover, at described hydraulic piston jumper bar, be positioned on the outer wall of part of cylindrical cavity and be provided with outer cone geared sleeve, described hydraulic piston jumper bar upper end sidewall on be provided with vertical chute, in described vertical chute, by flat key piece, be provided with by electric motor driven Spur Gear Driving cover.
Further, as a kind of concrete form of structure, be also convenient to improve the originally stability when withstanding shocks load of drill bit, the bottom of cylindrical cavity described in the utility model is hemispherical cavity body structure.
Further, as a kind of concrete form of structure, the length of vertical chute described in the utility model is greater than the degree of depth of cylindrical cavity in the vertical direction end.
The beneficial effects of the utility model are: the utility model is simple in structure, machine structural parts is reasonable in design, after reaming mouth, PDC drill bit installs, by the discontinuity reciprocating impact of hydraulic piston jumper bar, can play good fragmentation to the stratum of hard, in the downward impact of hydraulic piston jumper bar each time, complete, be returned to upper end waits for while impacting next time, outer cone geared sleeve and internal bevel gear cover are just in time engageable, to be motor overlap indirectly power transmission to the outer cone geared sleeve on hydraulic piston jumper bar by Spur Gear Driving dynamical system, thereby drive drill body to creep into downwards, after certain hour, stop operating, hydraulic piston jumper bar continues to impact downwards, and so forth, greatly improved the efficiency of creeping into, reach a kind of effect that is similar to impact, wearing and tearing and the requirement to equipment of drill bit have been reduced.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
In figure: 1. drill body, 2. cylindrical cavity, 3. hydraulic piston jumper bar, 31. vertical chutes, 32. flat key pieces, 4. internal bevel gear cover, 5. outer cone geared sleeve, 6. Spur Gear Driving cover.
The specific embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model is only described in a schematic way, so it only show the formation relevant with the utility model.
The preferred embodiment of the utility model impact type PDC drill bit as shown in Figure 1, comprise drill body 1, at the center of drill body 1, be provided with cylindrical cavity 2, in cylindrical cavity 2, be slidably fitted with can be vertically on, the hydraulic piston jumper bar 3 of lower slider, the length of described vertical chute 31 is greater than the degree of depth of cylindrical cavity 2 in the vertical direction ends, the lower end of described hydraulic piston jumper bar 3 is hemispherical dome structure, its upper end is connected with hydraulic cylinder, the bottom of described cylindrical cavity 2 is hemispherical cavity body structure, can enlarge active surface when impacting with the lower end with hydraulic piston jumper bar 3, in the upper end of cylindrical cavity 2, be welded with internal bevel gear cover 4, at hydraulic piston jumper bar 3, be positioned on the outer wall of part of cylindrical cavity 2 and be provided with outer cone geared sleeve 5, hydraulic piston jumper bar 3 upper ends sidewall on be provided with vertical chute 31, in vertical chute 31, by flat key piece 32, be provided with by electric motor driven Spur Gear Driving cover 6.
The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this utility model technological thought, carry out various change and modification completely.The technical scope of this utility model is not limited to the content on manual, must determine its technical scope according to claim scope.
Claims (3)
1. an impact type PDC drill bit, comprise drill body (1), it is characterized in that: at the center of described drill body (1), be provided with cylindrical cavity (2), in described cylindrical cavity (2), be slidably fitted with can be vertically on, the hydraulic piston jumper bar (3) of lower slider, the lower end of described hydraulic piston jumper bar (3) is hemispherical dome structure, its upper end is connected with hydraulic cylinder, in the upper end of described cylindrical cavity (2), be welded with internal bevel gear cover (4), at described hydraulic piston jumper bar (3), be positioned on the outer wall of part of cylindrical cavity (2) and be provided with outer cone geared sleeve (5), described hydraulic piston jumper bar (3) upper end sidewall on be provided with vertical chute (31), in described vertical chute (31), by flat key piece (32), be provided with by electric motor driven Spur Gear Driving cover (6).
2. impact type PDC drill bit as claimed in claim 1, is characterized in that: the bottom of described cylindrical cavity (2) is hemispherical cavity body structure.
3. impact type PDC drill bit as claimed in claim 1, is characterized in that: the length of described vertical chute (31) is greater than the degree of depth of cylindrical cavity (2) in the vertical direction end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251529.6U CN203891771U (en) | 2014-05-16 | 2014-05-16 | Percussive PDC (polycrystalline diamond compact) bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251529.6U CN203891771U (en) | 2014-05-16 | 2014-05-16 | Percussive PDC (polycrystalline diamond compact) bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203891771U true CN203891771U (en) | 2014-10-22 |
Family
ID=51718187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251529.6U Expired - Fee Related CN203891771U (en) | 2014-05-16 | 2014-05-16 | Percussive PDC (polycrystalline diamond compact) bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203891771U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804658A (en) * | 2016-04-27 | 2016-07-27 | 山东国岳金刚石制品有限公司 | Impact breaking type PDC bit |
| CN111411898A (en) * | 2020-05-28 | 2020-07-14 | 西南石油大学 | Composite drill bit |
-
2014
- 2014-05-16 CN CN201420251529.6U patent/CN203891771U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804658A (en) * | 2016-04-27 | 2016-07-27 | 山东国岳金刚石制品有限公司 | Impact breaking type PDC bit |
| CN105804658B (en) * | 2016-04-27 | 2018-03-13 | 山东国岳金刚石制品有限公司 | Impact grinding formula PDC drill bit |
| CN111411898A (en) * | 2020-05-28 | 2020-07-14 | 西南石油大学 | Composite drill bit |
| CN111411898B (en) * | 2020-05-28 | 2023-06-09 | 西南石油大学 | Composite drill bit |
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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: 20141022 Termination date: 20150516 |
|
| EXPY | Termination of patent right or utility model |