CN101571030A - Multistage cutting guide and control drill bit - Google Patents

Multistage cutting guide and control drill bit Download PDF

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Publication number
CN101571030A
CN101571030A CNA2009100268052A CN200910026805A CN101571030A CN 101571030 A CN101571030 A CN 101571030A CN A2009100268052 A CNA2009100268052 A CN A2009100268052A CN 200910026805 A CN200910026805 A CN 200910026805A CN 101571030 A CN101571030 A CN 101571030A
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CN
China
Prior art keywords
drill bit
guiding
wind
cutting guide
drill
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.)
Pending
Application number
CNA2009100268052A
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Chinese (zh)
Inventor
黄梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING JIEJIA TECHNOLOGY Co Ltd
Original Assignee
NANJING JIEJIA TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NANJING JIEJIA TECHNOLOGY Co Ltd filed Critical NANJING JIEJIA TECHNOLOGY Co Ltd
Priority to CNA2009100268052A priority Critical patent/CN101571030A/en
Publication of CN101571030A publication Critical patent/CN101571030A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a multistage cutting guide and control drill bit, which has a structure that: a drill bit is arranged on a rock core drill bit; the rock core drill bit is fixed on a drill body through screw threads; the drill body is welded with three or four counterboring wind-guiding cutting wheels; wind-guiding powder discharge holes are arranged between the counterboring wind-guiding cutting wheels; the bottom of the drill body is provided with screw threads; an air duct is arranged on a base of the drill body through screw threads; a conical wind-guiding powder discharge baffle is fixed on the air duct through screw threads; the air duct is provided with built-in vents; a fronting three-wing bit is provided with a fronting vent and the rock core drill bit is provided with cutting teeth and a powder discharge groove. The multistage cutting guide and control drill bit has the advantages of effectively solving a problem of difficult coal seam deep hole drilling, improving rate of finished hole, preventing drilling deflection and improving drilling depth and drilling efficiency, along with suitability for coal mine underground coal seam deep hole drilling operation, good guidance quality, simple structure, convenient use and operation, high rate of finished hole, safety and reliability, great improvement in production efficiency and production capacity and obvious social and economic benefits.

Description

Multistage cutting guide and control drill bit
Technical field
What the present invention relates to is a kind of guiding drilling apparatus, is used under the coal mine this coal seam multistage cutting guide and control drill bit of drilling.Belong to the coal mine machinery technical field.
Background technology
Coal and gas are given prominence to or gas explosion accident is that colliery harm is the most serious, the accident that the most easily causes casualties.Particularly coal and gas are outstanding, not only cause a tremendous loss of lives, and hindered the performance of development of productivity and mechanization level, for guaranteeing mine safety, according to the rules, when projecting coal bed operation, must drill earlier and take out coal-bed gas in advance, be no core drill bit and core drill bit is arranged because at present the drill bit that uses adopts.When no core drill bit crept into, guidance quality was poor, and inclined to one side hole phenomenon easily takes place, and can not get to the design attitude and the degree of depth, and it is lower to drill into porosity.Though and have core drill bit to have certain guidance quality, whenever creep into one section need and get the coal core, seriously restricting rate of penetration, workload is big, it is slow to creep into speed, efficient is low.Cause a large amount of working time human and material resources wastes, increase to produce and generate this, restricting seriously that mine gas is administered and safety in production, so its innovation, improvement are imperative.
Summary of the invention
The present invention's purpose just provide a kind of safe, reliable, guidance quality is good, become porosity height, the fast multistage cutting guide and control drill bit of rate of penetration, is intended to overcome the above-mentioned defective of existing in prior technology.
Technical solution of the present invention: its structure is to install on the drill bit on the core drill bit, core drill bit is fixed on the drill body by screw thread, be welded with three or four reaming wind-guiding cutting blades on the drill body, between reaming guiding cutting blade, be provided with the wind-guiding powder outlet, the drill body bottom is provided with screw thread, be used for Allianz knot air chimney, air chimney is installed on the drill body base by screw thread, cone wind-guiding row powder baffle plate is fixed on the air chimney by screw thread, air chimney is provided with built-in gravity vent, preposition three-wing bit is provided with preposition gravity vent, and core drill bit is provided with cutting teeth and sludge groove, and multistage cutting guide and control drill bit joins by screw thread and outer drill rod.
Advantage of the present invention: add a no core drill bit on the core drill bit having, when creeping into, coal body is earlier by drill bit cutting coal body, cut by core drill bit then and lead, the coal body that cuts away is discharged by wind-guiding powder outlet on the drill body and the sludge groove on the core drill bit, the outside of drill body adds peace guiding reaming section, is responsible for reaming and guiding, and its big I is adjusted.Can effectively solve drilling difficulty poor with guidance quality, become the problem that porosity is low, workload is big.Be applicable to that under the coal mine drill in this coal seam, particularly soft seam, the middle girdle industry of drilling is simple in structure, easy to operate, safe and reliable, becomes the porosity height, has improved production efficiency, society and remarkable in economical benefits greatly.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Among the figure 1 is core drill bit, the 2nd, drill body, the 3rd, preposition three-wing bit, the 4th, reaming wind-guiding cutting blade, the 5th, air chimney, the 6th, preposition gravity vent, the 7th, built-in gravity vent, the 8th, cone wind-guiding row powder baffle plate, the 9th, sludge groove, the 10th, cutting teeth, the 11st, wind-guiding powder outlet, the 12nd, screw thread.
The specific embodiment
The contrast accompanying drawing, its structure is to comprise core drill bit 1, drill body 2, preposition three-wing bit 3 and air chimney 5, wherein drill bit 3 is positioned on the core drill bit 1, core drill bit 1 is fixed on the drill body 2 by screw thread 12, be welded with three or four reaming wind-guiding cutting blades 4 on the drill body 2, between reaming guiding cutting blade 4, be provided with wind-guiding powder outlet 11, the drill body bottom is provided with screw thread 12, be used for Allianz knot air chimney 5, air chimney 5 is installed on the drill body base by screw thread 12, cone wind-guiding row powder baffle plate 8 is fixed on the air chimney 5 by screw thread 12, and air chimney 5 is provided with built-in gravity vent 7.Preposition three-wing bit 3 is provided with preposition gravity vent 6, and core drill bit 1 is provided with cutting teeth 10 and sludge groove 9, and multistage cutting guide and control drill bit joins by screw thread 12 and outer drill rod.
Be provided with air chimney 5 in the described drill body 2.Drill body 2 bases and screw thread 12 have gravity vent.
Described preposition gravity vent 6 communicates with air chimney 5.
Described core drill bit 1, drill body 2 and air chimney 5 are formed an integral body.
Said core drill bit 1 is to make parent by the hollow round steel, in the above the core drill bit body made of welding-on alloy cutting blade; Drill bit 3 is alloy bits, air chimney 5 be by seamless steel pipe make, reaming cutting blade 4 is made of alloy sheet and three angle steel welding-ons, drill body 2 is to make or use the round steel processing and fabricating with seamless steel pipe and steel plate, the cone wind-guiding is arranged powder baffle plate 7 and can be made by round steel.
In order to guarantee result of use, three-wing bit 3 and firm with core drill bit 1 welding.
During work, three-wing bit 3 is the cutting coal bodies earlier, are cut by core drill bit then and lead, and coal dust is discharged coal dust by preposition gravity vent 6 and built-in gravity vent 7 under the effect of blast.Core drill bit 1 is with annular contact and cutting coal body, and the cutting back forms a cylinder, and cylinder can play the guiding role in coal body.Reaming cutting blade 4 can make boring expand needed requirement to and can make orientation again.This invention guidance quality is good, creeps into soon, becomes the porosity height, creeps into deeply, has saved a large amount of time and workload, has improved efficient, and is simple in structure, easy to operate, safe and reliable, is the innovation greatly that this coal seam deep hole is drilled under the coal mine.

Claims (6)

1, multistage cutting guide and control drill bit, it is characterized in that installing on the drill bit on the core drill bit, core drill bit is fixed on the drill body by screw thread, be welded with three or four reaming wind-guiding cutting blades on the drill body, between reaming guiding cutting blade, be provided with the wind-guiding powder outlet, the drill body bottom is provided with screw thread, be used for Allianz knot air chimney, air chimney is installed on the drill body base by screw thread, cone wind-guiding row powder baffle plate is fixed on the air chimney by screw thread, and air chimney is provided with built-in gravity vent, and preposition three-wing bit is provided with preposition gravity vent, core drill bit is provided with cutting teeth and sludge groove, and multistage cutting guide and control drill bit joins by screw thread and outer drill rod.
2, multistage cutting guide and control drill bit according to claim 1 is characterized in that being provided with air chimney in the described drill body.
3, multistage cutting guide and control drill bit according to claim 1 is characterized in that described drill body base and screw thread have gravity vent.
4, multistage cutting guide and control drill bit according to claim 1 is characterized in that described preposition gravity vent communicates with air chimney.
5, multistage cutting guide and control drill bit according to claim 1 is characterized in that described core drill bit, drill body and air chimney form an integral body.
6, multistage cutting guide and control drill bit according to claim 1 is characterized in that described core drill bit is to make parent by the hollow round steel, in the above the core drill bit body made of welding-on alloy cutting blade; Described drill bit is an alloy bit, and air chimney is to be made by seamless steel pipe, and the reaming cutting blade is to be made of alloy sheet and three angle steel welding-ons, and the round steel processing and fabricating is made or used to drill body with seamless steel pipe and steel plate, and cone wind-guiding row powder baffle plate is made by round steel.
CNA2009100268052A 2009-06-01 2009-06-01 Multistage cutting guide and control drill bit Pending CN101571030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2009100268052A CN101571030A (en) 2009-06-01 2009-06-01 Multistage cutting guide and control drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2009100268052A CN101571030A (en) 2009-06-01 2009-06-01 Multistage cutting guide and control drill bit

Publications (1)

Publication Number Publication Date
CN101571030A true CN101571030A (en) 2009-11-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2009100268052A Pending CN101571030A (en) 2009-06-01 2009-06-01 Multistage cutting guide and control drill bit

Country Status (1)

Country Link
CN (1) CN101571030A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108678678A (en) * 2018-06-06 2018-10-19 中国矿业大学 A kind of mine double-layer dry type dust suction drill bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108678678A (en) * 2018-06-06 2018-10-19 中国矿业大学 A kind of mine double-layer dry type dust suction drill bit
CN108678678B (en) * 2018-06-06 2024-04-02 中国矿业大学 Mining double-layer dry dust collection drill bit

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