CN2426008Y - Hydraulic rotary percussion drill bit - Google Patents
Hydraulic rotary percussion drill bit Download PDFInfo
- Publication number
- CN2426008Y CN2426008Y CN 00234370 CN00234370U CN2426008Y CN 2426008 Y CN2426008 Y CN 2426008Y CN 00234370 CN00234370 CN 00234370 CN 00234370 U CN00234370 U CN 00234370U CN 2426008 Y CN2426008 Y CN 2426008Y
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drill
- bit
- diamond
- bit body
- 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 - Lifetime
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- Earth Drilling (AREA)
Abstract
The utility model discloses a hydraulic rotary percussion drill bit. The utility model solves the problems of no wear resistance and no percussion resistance of existing rotary percussion drill bits, and also solves the problem that drill bits are easy to fall down to well bottoms and need to be salvaged. The utility model is characterized in that a drill-bit body is fixedly provided with composite rock breaking teeth which are made from hard alloys / diamonds and are arranged by rule, make the drill bit have the advantages of wear resistance and shock resistance, and prolongs the service life of the drill bit. The upper section of the drill-bit body is also provided with a screw-thread suspension circular bead which can automatically suspend the drill bit when the drill bit falls down, can directly start drilling, and unloads the drill bit. The utility model does not need to salvage the drill bit, and shortens drilling period.
Description
The utility model relates to a kind of down hole drill rock crushing tool, belongs to the fluid power that is used to bore the physical prospecting earthquake borehole, deep-well and the ultradeep well that the contain hard formation drill bit that spins.
At present, the fluid power of the domestic development drill bit that spins has following shortcoming: (1) drill bit working life is low; Used drill bit one is inserted drill hammer, and its tooth is a hard-metal insert, belongs to sliding friction with rock, and its abrasion resistance is relatively poor, thereby has reduced the drill bit working life; The 2nd, rock bit, though its tooth and rock are rolling friction, bit bearing damages under the pulse dynamic load effect easily, thereby influences the drill bit working life.(2) drill bit often needs to salvage; Be subjected to adopt the less anvil axle of size to be connected between structural limitations drilling tool and the drill bit, the anvil axle easily ruptures under higher pulse dynamic load effect, in case fracture, the drill bit of its lower link just drops to the shaft bottom, need to propose whole drill strings, implement fishing, increased labour intensity, prolong drilling period, caused very big waste.
The purpose of this utility model provides the high and fluid power that also need not salvage of a kind of working life drill bit that spins under anvil axle fracture situation in order to overcome above-mentioned the deficiencies in the prior art.
The purpose of this utility model is achieved through the following technical solutions: this kind fluid power drill bit that spins, to form by bit body and nozzle, and its characteristics are: be provided with one at the end of bit body upper end screw thread and hang shoulder, hang the shoulder perisporium and be provided with screw thread; Intrinsic number row gauge teeth on bit body hypomere perisporium, the bit body front end is intrinsic by the regularly arranged compound broken rock tooth of carbide alloy/diamond, intrinsic water nozzle in the bit body hypomere taper hole.The above-mentioned fluid power drill bit that spins, its characteristics also are: the structure of broken rock tooth can be on the hard alloy columnar successively sintering the carbide alloy/diamond transition zone that contains carbide alloy 90% and diamond 10%, diamond/carbide alloy transition zone and the pure diamond layer that contains diamond 90% and carbide alloy 10% are arranged.
The utility model compared with prior art has following advantage: because the compound broken rock tooth of this drill bit intrinsic carbide alloy/diamond on bit body, be hard alloy columnar surface sintering one deck diamond and transition material layer, be hemispherical, make broken rock tooth not only have the resistance to impact of carbide alloy, and have adamantine abrasion resistance, thereby bit life improves greatly; Also because bit body is provided with the suspension shoulder, promptly and the matching design between the fishing socket of the drilling tool that spins and the salvaging screw thread on the bit body, make that hanging shoulder when the anvil axle fracture can hang drill bit automatically, and can directly pull out of hole drill bit is unloaded, and the salvaging drill bit that do not need to go into the well, reduce unnecessary work, shorten drilling period, improved benefit.
Accompanying drawing 1 is the utility model structure chart;
Accompanying drawing 2 is structure charts of the broken rock tooth of the utility model.
Below in conjunction with accompanying drawing the utility model is described further:
By shown in Figure 1, the utility model is made up of bit body 1 and nozzle 4, is provided with one at the end of bit body 1 upper end screw thread and hangs shoulder 5, hangs shoulder 5 perisporiums and is provided with screw thread; Intrinsic number row gauge teeth 2 on bit body 1 hypomere perisporium, bit body 1 front end is intrinsic by the regularly arranged compound broken rock tooth 3 of carbide alloy/diamond, intrinsic water nozzle 4 in the bit body 1 hypomere taper hole.By shown in Figure 2, the structure of broken rock tooth 3 can be on the hard alloy columnar 6 successively sintering the carbide alloy/diamond transition zone 7 that contains carbide alloy 90% and diamond 10%, diamond/carbide alloy transition zone 8 and the pure diamond layer 9 that contains diamond 90% and carbide alloy 10% are arranged.
Claims (2)
1, a kind of fluid power drill bit that spins is made up of bit body (1) and nozzle (4), it is characterized in that: be provided with one at the end of bit body (1) upper end screw thread and hang shoulder (5), hang shoulder (5) perisporium and be provided with screw thread; Intrinsic number row gauge teeth (2) on bit body (1) hypomere perisporium, bit body (1) front end is intrinsic by the regularly arranged compound broken rock tooth of carbide alloy/diamond (3), intrinsic water nozzle (4) in bit body (1) the hypomere taper hole.
2, the fluid power according to claim 1 drill bit that spins is characterized in that: the structure of broken rock tooth (3) can be on the hard alloy columnar (6) successively sintering the carbide alloy/diamond transition zone (7) that contains carbide alloy 90% and diamond 10%, diamond/carbide alloy transition zone (8) and the pure diamond layer (9) that contains diamond 90% and carbide alloy 10% are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00234370 CN2426008Y (en) | 2000-05-12 | 2000-05-12 | Hydraulic rotary percussion drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00234370 CN2426008Y (en) | 2000-05-12 | 2000-05-12 | Hydraulic rotary percussion drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2426008Y true CN2426008Y (en) | 2001-04-04 |
Family
ID=33596500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00234370 Expired - Lifetime CN2426008Y (en) | 2000-05-12 | 2000-05-12 | Hydraulic rotary percussion drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2426008Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635309A (en) * | 2012-04-19 | 2012-08-15 | 平阳县鹏伟机械有限责任公司 | Hammer head of percussion drill |
-
2000
- 2000-05-12 CN CN 00234370 patent/CN2426008Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635309A (en) * | 2012-04-19 | 2012-08-15 | 平阳县鹏伟机械有限责任公司 | Hammer head of percussion drill |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010404 |