CN213710962U - High-temperature hard rock air down-the-hole hammer drill bit - Google Patents
High-temperature hard rock air down-the-hole hammer drill bit Download PDFInfo
- Publication number
- CN213710962U CN213710962U CN202022718657.5U CN202022718657U CN213710962U CN 213710962 U CN213710962 U CN 213710962U CN 202022718657 U CN202022718657 U CN 202022718657U CN 213710962 U CN213710962 U CN 213710962U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- face
- rigid body
- teeth
- rock
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a high-temperature hard rock air down-the-hole hammer drill bit, which comprises a drill bit rigid body connected with a power equipment impactor, spherical teeth arranged at the front end of the drill bit rigid body, gauge teeth arranged at the side surface of the drill bit rigid body and close to the spherical teeth, a plurality of slag discharge grooves arranged at the side surface of the drill bit rigid body and an air path hole arranged at the middle lower part of the drill bit rigid body; the front end of the drill bit rigid body is a drilling working face, the drilling working face comprises an end face rock breaking face and a side face rock breaking face, the spherical teeth comprise end face spherical teeth and side face spherical teeth, the end face spherical teeth are arranged on the end face rock breaking face, and the side face spherical teeth are arranged on the side face rock breaking face. The utility model discloses can solve air down-the-hole hammer drill bit in the hot dry rock drilling drill bit wearing and tearing too fast, fall the tooth and seriously lead to synthesizing the lower problem of drilling efficiency, satisfy the demand of carrying out quick drilling construction under the hot dry rock high temperature hard rock stratum condition.
Description
Technical Field
The utility model relates to a drilling construction equipment technical field, concretely relates to high temperature hard rock air down-the-hole hammer drill bit.
Background
The dry-hot rock is a compact and non-leakage high-temperature rock body which is located in a stratum within the range of 3000-10000 m, has no fluid or only a small amount of underground fluid inside, has the temperature of 150-650 ℃, is in a dry-hot state, and is a clean and reproducible green resource.
The main lithologies of the hot dry rock are various metamorphic rocks and crystalline rocks, and generally comprise biotite gneiss, granite amphibole and the like. Compared with the conventional stratum, the difference of the geological characteristics of the hot dry rock is mainly shown in that: the hardness of the rock is high, and the formation temperature is high.
The drilling of the hot dry rock adopts the rotary drilling measure of a conventional roller bit, the footage is slow, and the exploration and development requirements can not be met. According to the characteristics of the down-the-hole hammer drilling technology, the air down-the-hole hammer drilling technology is adopted, compressed air is utilized to drive a down-the-hole hammer to work, the down-the-hole hammer drill bit is impacted with larger impact power and high frequency, so that rocks are crushed, and the generated rock debris is carried by high-pressure airflow and returns to the ground surface. The method can generate effective volume crushing when drilling into complete medium and hard rock strata, and has high drilling efficiency.
However, the conventional air down-the-hole hammer drill bit drills under the condition of high-temperature hard rock stratum, although the drill bit advances quickly, the conditions of falling of the down-the-hole hammer drill bit, breaking of alloy teeth and the like occur quickly, the diameter-keeping effect of the drilling hole diameter is poor, so that the drill bit needs to be replaced with a new one, a large amount of time is spent on hole diameter repairing, and the consumed oil cost, the cost and the risk in the hole are high.
Therefore, conventional air down-the-hole hammer drill bits are not suitable for drilling in hot dry rock drilling high temperature hard rock formations.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature hard rock air down-the-hole hammer drill bit, this high temperature hard rock air down-the-hole hammer drill bit can solve air down-the-hole hammer drill bit in the hot dry rock drilling drill bit wearing and tearing too fast, fall the tooth and seriously lead to synthesizing the lower problem of drilling efficiency, satisfy the demand of carrying out the quick drilling construction under the hot dry rock high temperature hard rock stratum condition.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
1. the basic concept of the utility model is as follows:
the efficient drilling of the air down-the-hole hammer in a high-temperature hard rock stratum is realized by optimizing the drill bit rigid body material, the optimal selection of spherical teeth, the optimal tooth fixing process, the diameter protection, the design of a slag discharge air path and the like of the air down-the-hole hammer drill bit.
A drill bit of a high-temperature hard rock air down-the-hole hammer comprises a drill bit rigid body, spherical teeth, gauge protection teeth, a slag discharge groove and an air path hole, wherein the drill bit rigid body is made of alloy steel 30Cr Ni4Mo with high tensile strength, yield strength and hardness; the front end of the drill rigid body is a drilling working surface and comprises an end surface and a side surface; the rear end of the drill bit rigid body is a hammer handle and is connected with the power equipment impactor through a spline structure; the spherical teeth comprise end face spherical teeth and side face spherical teeth, and the spherical teeth are made of WC hard alloy KK06L material with good bending strength and impact toughness; a slag discharge groove is arranged between every two adjacent spherical teeth of the side spherical teeth; the gauge teeth are hard alloy flat teeth and are arranged on the side surface of the rigid body working surface of the drill bit; the air path hole is positioned at the middle lower part of the drill rigid body.
The utility model discloses be different from conventional air down-the-hole hammer drill bit wind path design, innovated outside and blown sediment wind path hole design, cancelled the centre bore of hammer handle, the high velocity air flow directly enters into the hole bottom from hammer handle side, and row's sediment effect is better, and the hammer handle becomes solid construction by hollow structure, has improved the intensity of drill bit rigid body hammer handle.
2. The utility model discloses a concrete scheme as follows:
a drill bit of a high-temperature hard rock air down-the-hole hammer comprises a drill bit rigid body connected with a power equipment impactor, spherical teeth arranged at the front end of the drill bit rigid body, gauge protection teeth arranged on the side face of the drill bit rigid body and close to the spherical teeth, a plurality of slag discharge grooves arranged on the side face of the drill bit rigid body and an air path hole arranged at the middle lower part of the drill bit rigid body.
The front end of the drill bit rigid body is a drilling working face, the drilling working face comprises an end face rock breaking face and a side face rock breaking face, the spherical teeth comprise end face spherical teeth and side face spherical teeth, the end face spherical teeth are arranged on the end face rock breaking face, and the side face spherical teeth are arranged on the side face rock breaking face.
Wherein, the rear end of the drill bit rigid body is a hammer handle which is connected with the power equipment impactor through a spline structure.
Further limit, set up one between the adjacent side ball tooth the row's cinder notch.
Further limiting, the gauge protection teeth are hard alloy flat teeth arranged on the side surface of the drill rigid body.
Wherein, the drill bit rigid body is made of alloy steel materials.
Further defined, the drill rigid body is made of 30Cr Ni4Mo alloy steel material.
Wherein, the ball tooth is made of hard alloy material.
Further defined, the ball tooth is made of WC cemented carbide KK 06L.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model mainly comprises a drill bit rigid body, spherical teeth, gauge teeth, a slag discharge groove and an air path hole, mainly aims at the problems that the drill bit is worn too fast and the broken teeth fall off during the drilling process of the air down-the-hole hammer under the condition of high-temperature hard rock stratum of dry and hot rock drilling, selects alloy steel with higher tensile strength, yield strength and hardness as the drill bit rigid body, and sets the gauge teeth to enhance the gauge capacity of the drill bit; the design of the air path hole is innovative, so that slag discharge is smoother, and repeated abrasion of rock debris to the drill bit is reduced; the improved and optimized high-temperature hard rock air down-the-hole hammer drill bit has the advantages of high drilling speed, well drilling aperture meeting the requirement and reliable technology, and is suitable for drilling construction in high-temperature hard rock strata.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the usage state of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is a distribution diagram of the spherical teeth of the present invention on the drilling face of the rigid body of the drill bit.
Reference numerals: 1-rigid drill bit, 2-air passage holes, 3-slag discharge grooves, 4-gauge teeth, 5-spherical teeth, 6-end-face spherical teeth, 7-side-face spherical teeth, 8-drilling working face, 9-end-face rock breaking face, 10-side-face rock breaking face, 11-pneumatic impactor and 12-drill rod.
Detailed Description
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
Example one
As shown in the accompanying drawings 1-3 of the specification, the present embodiment discloses a drill bit of a high temperature hard rock air down-the-hole hammer, which comprises a drill bit rigid body 1 for connecting with a power equipment impactor, a spherical tooth 5 arranged at the front end of the drill bit rigid body 1, gauge protection teeth 4 arranged on the side surface of the drill bit rigid body 1 and close to the spherical tooth 5, a plurality of slag discharge grooves 3 arranged on the side surface of the drill bit rigid body 1, and an air path hole 2 arranged at the middle lower part of the drill bit rigid body 1.
The front end of the drill bit rigid body 1 is a drilling working surface 8, the drilling working surface 8 comprises an end face rock breaking surface 9 and a side face rock breaking surface 10, the button 5 comprises an end face button 6 and a side face button 7, the end face button 6 is arranged on the end face rock breaking surface 9, and the side face button 7 is arranged on the side face rock breaking surface 10.
Wherein, the rear end of the drill bit rigid body 1 is a hammer handle which is connected with the power equipment impactor through a spline structure.
Wherein the power equipment impactor is a pneumatic impactor 11.
In the embodiment, one slag discharge groove 3 is arranged between adjacent side face spherical teeth 7.
Wherein, the gauge teeth 4 are hard alloy flat teeth arranged on the side surface of the drill bit rigid body 1.
Wherein, the drill rigid body 1 is made of alloy steel material, in the embodiment, the drill rigid body 1 is made of 30CrNi4Mo alloy steel material.
Wherein the ball tooth 5 is made of cemented carbide material, in this embodiment the ball tooth 5 is made of WC cemented carbide KK 06L.
The utility model mainly comprises a drill bit rigid body 1, spherical teeth 5, gauge teeth 4, a slag discharge groove 3 and a wind path hole 2, mainly aims at the problems that the drill bit is worn too fast and the broken teeth fall off during the drilling process of the air down-the-hole hammer under the condition of high-temperature hard rock stratum of dry hot rock drilling, selects alloy steel with higher tensile strength, yield strength and hardness as the drill bit rigid body 1, and sets the gauge teeth 4 to enhance the gauge capacity of the drill bit; the design of the air path hole 2 is innovative, so that slag discharge is smoother, and repeated abrasion of rock debris to a drill bit is reduced; the improved and optimized high-temperature hard rock air down-the-hole hammer drill bit has the advantages of high drilling speed, well drilling aperture meeting the requirement and reliable technology, and is suitable for drilling construction in high-temperature hard rock strata.
In actual use, the existing drilling machine is used as a machine body, the rotary torque and the drilling pressure of the drilling machine are transmitted to the high-temperature hard rock air down-the-hole hammer drill through the drill rod 12 and the pneumatic impactor 11 by a power head of the drilling machine to drive the drill bit to rotate and cut a rock body, high-pressure air flow enters the pneumatic impactor 11 through the drill rod 12 to provide power for the operation of the impactor to drive the drill bit to impact and break the rock, and meanwhile, the high-pressure air flow is used as a medium to discharge rock debris and cool the drill bit; as shown in the attached figure 2 of the specification, the pneumatic impactor 11 acts on the drill bit rigid body 1 to drive the spherical teeth 5 on the end face and the side face of the drill bit to impact rock mass to break rock, the gauge protection teeth 4 delay abrasion of the working face of the drill bit, high-pressure air flow enters the bottom of the drill bit through the air passage hole 2, and rock debris carried by the pneumatic impactor forms a drill hole through the discharge hole of the slag discharge groove 3.
To sum up, the utility model discloses high temperature hard rock air down-the-hole hammer drill bit can guarantee the drilling aperture under the high temperature hard rock stratum condition of hot dry rock drilling, need not change new drill bit and carry out the aperture restoration to the drilling in drill bit life range, provides comprehensive drilling efficiency.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.
Claims (9)
1. The utility model provides a high temperature hard rock air down-the-hole hammer drill which characterized in that: the drill bit comprises a drill bit rigid body connected with a power equipment impactor, spherical teeth arranged at the front end of the drill bit rigid body, gauge protection teeth arranged on the side surface of the drill bit rigid body and close to the spherical teeth, a plurality of slag discharge grooves arranged on the side surface of the drill bit rigid body and an air path hole arranged at the middle lower part of the drill bit rigid body.
2. A high temperature hard rock air down-the-hole hammer bit as claimed in claim 1, wherein: the front end of the drill bit rigid body is a drilling working face, the drilling working face comprises an end face rock breaking face and a side face rock breaking face, the spherical teeth comprise end face spherical teeth and side face spherical teeth, the end face spherical teeth are arranged on the end face rock breaking face, and the side face spherical teeth are arranged on the side face rock breaking face.
3. A high temperature hard rock air down-the-hole hammer bit as claimed in claim 1, wherein: the rear end of the drill bit rigid body is a hammer handle which is connected with the power equipment impactor through a spline structure.
4. A high temperature hard rock air down-the-hole hammer bit as claimed in claim 2, wherein: and one slag discharge groove is arranged between the adjacent side face spherical teeth.
5. A high temperature hard rock air down-the-hole hammer bit as claimed in claim 1, wherein: the gauge protection teeth are hard alloy flat teeth arranged on the side surface of the rigid body of the drill bit.
6. A high temperature hard rock air down-the-hole hammer bit according to any one of claims 1 to 5, wherein: the drill bit rigid body is made of alloy steel materials.
7. The air down-the-hole hammer bit for high-temperature hard rock according to claim 6, wherein: the drill bit rigid body is made of 30Cr Ni4Mo alloy steel material.
8. A high temperature hard rock air down-the-hole hammer bit according to any one of claims 1 to 5, wherein: the button is made of hard alloy material.
9. A high temperature hard rock air down-the-hole hammer bit as claimed in claim 8, wherein: the ball tooth is made of WC cemented carbide KK 06L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718657.5U CN213710962U (en) | 2020-11-23 | 2020-11-23 | High-temperature hard rock air down-the-hole hammer drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718657.5U CN213710962U (en) | 2020-11-23 | 2020-11-23 | High-temperature hard rock air down-the-hole hammer drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213710962U true CN213710962U (en) | 2021-07-16 |
Family
ID=76783729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022718657.5U Active CN213710962U (en) | 2020-11-23 | 2020-11-23 | High-temperature hard rock air down-the-hole hammer drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213710962U (en) |
-
2020
- 2020-11-23 CN CN202022718657.5U patent/CN213710962U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102434105B (en) | Composite bit with rotary cut rock-breaking function | |
| CN111236848B (en) | Controllable electromagnetic drive type impact-scraping composite drill bit and method | |
| CN102392603B (en) | Compound bit formed by rotary cutting bit and PDC (polycrystalline diamond compact) blades | |
| CN102392605A (en) | Compound bit formed by PDC (polycrystalline diamond compact) bits and rotary cutting bit | |
| CN202493219U (en) | Combined bit formed by peeling bits and PDC (Polycrystalline Diamond Compact) blades | |
| WO2013029347A1 (en) | Composite bit with rotary cut rock-breaking function | |
| CN107100550A (en) | A kind of gradually reducing type efficient rock-breaking taper PDC drill bit | |
| CN210289637U (en) | High anticollision PDC drill bit | |
| CN213710962U (en) | High-temperature hard rock air down-the-hole hammer drill bit | |
| CN210317170U (en) | High-performance down-the-hole drill bit | |
| CN202441267U (en) | Combined drill bit having rock-breaking function through rotary cutting | |
| CN206091882U (en) | Formula down --hole hammer drill tied in a bundle advances to use polycrystalline diamond down --hole drill bit | |
| CN102400646B (en) | Composite bit formed by rotary cut bit and roller bit | |
| CN209569017U (en) | A kind of pressure beats compound broken rock shield machine | |
| CN112004985B (en) | Drill bit with wear-resistant protection | |
| CN202441259U (en) | Combined drill bit formed by rotary-cutting drill bit and cone drill bit | |
| CN213234940U (en) | Drill bit for directional drilling | |
| CN109339808A (en) | Pressure beats compound broken rock shield machine | |
| CN206503567U (en) | A kind of oil drill rocker | |
| CN216240402U (en) | Hydraulic composite vibration impactor | |
| CN114718465A (en) | Dynamic pulling-shearing tunneling drill bit and composite rock breaking method | |
| CN211573403U (en) | High-wear-resistance hard alloy drill bit | |
| CN202441266U (en) | A combined bit formed by a PDC bit and a rotary cut bit | |
| CN210714476U (en) | Down-the-hole hammer drill bit | |
| CN214836120U (en) | Be used for mine drilling in pit bottom reamer bit that can shock attenuation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |