CN102704845A - Mining drill bit for drilling air vents of coal mine - Google Patents
Mining drill bit for drilling air vents of coal mine Download PDFInfo
- Publication number
- CN102704845A CN102704845A CN2012100136657A CN201210013665A CN102704845A CN 102704845 A CN102704845 A CN 102704845A CN 2012100136657 A CN2012100136657 A CN 2012100136657A CN 201210013665 A CN201210013665 A CN 201210013665A CN 102704845 A CN102704845 A CN 102704845A
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- Prior art keywords
- drill bit
- air
- bearing
- cooled
- water
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Abstract
The invention provides a mining drill bit for drilling air vents of a coal mine. The mining drill bit comprises a drill bit body and a bearing mounted in the drill bit body, an air cooling channel is arranged on the drill bit body and opposite to the bearing, a step hole is arranged at the top of the air cooling channel, and a plug is mounted in the step hole. When the bearing needs air cooling, the plug is detached, and compressed air enters from the air cooling channel to cool the bearing. When the bearing needs water cooling, the plug is screwed into the step hole to block the air cooling channel, a water-cooling medium is used for cooling the bearing and is ensured not to enter the air cooling channel to intrude the bearing. Therefore, the bearing can simultaneously adapt to working environments using air or water as the cooling medium, the mining drill bit for drilling the air vents of the coal mine is convenient to assemble and manufacture, and interchangeability of a water-cooled drill bit and an air-cooled drill bit is achieved.
Description
Technical field
The present invention relates to a kind of mining drill bit that is used for beating the coalmine ventilation mouth, belong to mining drill bit technical field.
Background technology
Blasthole tricone rock bit is the important tool that is used to exploit outdoors iron ore, colliery and nonferrous metals ore, and during drill bit work, the medium of cooling bearing is a compressed air.
At present, beat the mining drill bit of coalmine ventilation mouth, the medium of cooling bearing is a water.Therefore, need that design is a kind of to adapt to air or water is the drill bit structure of cooling medium.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of mining drill bit that is used for beating the coalmine ventilation mouth is provided.
The object of the invention is realized through following technical scheme:
Be used for beating the mining drill bit of coalmine ventilation mouth, comprise drill body and be installed on bearing wherein, characteristics are: said drill body is provided with air-cooled passage, and air-cooled passage and bearing are relative, and the top of air-cooled passage is provided with stepped hole, and plug is installed in the stepped hole.
Further, the above-mentioned mining drill bit that is used for beating the coalmine ventilation mouth, wherein, said stepped hole is provided with internal thread, and plug is provided with the external screw thread that matches with the stepped hole internal thread, and plug forms thread seal with stepped hole and is connected.
The substantive distinguishing features of technical scheme of the present invention is mainly reflected in progressive:
When the bearing need are air-cooled, disassemble plug, compressed air gets into from air-cooled passage bearing is cooled off, and when bearing needs water-cooled, with air-cooled passage plugging, by the water-cooled medium bearing is cooled off in the plug screw-in stepped hole; Guarantee the water-cooled medium can not get into air-cooled passage and invade bearing.Making bearing ability simultaneous adaptation air or water is the working environment of cooling medium, and it is convenient that its assembling is produced, and do not have influence on existing production model, realizes that water-cooled drill bit and general air cooling drill bit possess interchangeability.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Fig. 1: structural representation of the present invention.
The specific embodiment
As shown in Figure 1, be used for beating the mining drill bit of coalmine ventilation mouth, comprise drill body 1 and be installed on bearing wherein; Drill body 1 is provided with air-cooled passage 2; Air-cooled passage 2 is relative with bearing, and the top of air-cooled passage is provided with stepped hole, and stepped hole is provided with internal thread; Plug 3 is provided with the external screw thread that matches with the stepped hole internal thread, and plug 3 forms thread seal through screw thread and stepped hole and is connected.
When the bearing need are air-cooled, disassemble plug 3, compressed air gets into from air-cooled passage 2 bearing is cooled off.When bearing needs water-cooled, with air-cooled passage 2 shutoff, bearing is cooled off in the plug 3 screw-in stepped holes by the water-cooled medium; Guarantee the water-cooled medium can not get into air-cooled passage and invade bearing.Making bearing ability simultaneous adaptation air or water is the working environment of cooling medium, and it is convenient that its assembling is produced, and do not have influence on existing production model.Realize water-cooled drill bit and general air cooling drill bit, possess interchangeability.
In sum, the present invention is novel in design, and the bearing that not only guarantees work is under the water-cooled condition, and water can not invaded bearing; And can guarantee that air cooling drill bit and water-cooled drill bit can exchange easily.
What need understand is: the above only is a preferred implementation of the present invention; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (2)
1. be used for beating the mining drill bit of coalmine ventilation mouth; Comprise drill body and be installed on bearing wherein, it is characterized in that: said drill body is provided with air-cooled passage, and air-cooled passage and bearing are relative; The top of air-cooled passage is provided with stepped hole, and plug is installed in the stepped hole.
2. the mining drill bit that is used for beating the coalmine ventilation mouth according to claim 1, it is characterized in that: said stepped hole is provided with internal thread, and plug is provided with the external screw thread that matches with the stepped hole internal thread, and plug forms thread seal with stepped hole and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100136657A CN102704845A (en) | 2012-01-17 | 2012-01-17 | Mining drill bit for drilling air vents of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100136657A CN102704845A (en) | 2012-01-17 | 2012-01-17 | Mining drill bit for drilling air vents of coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102704845A true CN102704845A (en) | 2012-10-03 |
Family
ID=46897872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100136657A Pending CN102704845A (en) | 2012-01-17 | 2012-01-17 | Mining drill bit for drilling air vents of coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102704845A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154312A (en) * | 1977-05-26 | 1979-05-15 | Eduardo Barnetche | Drill bit with single cutting head |
| US4184554A (en) * | 1977-05-24 | 1980-01-22 | Sandvik Aktiebolag | Check valve for rock drill |
| US4515229A (en) * | 1983-06-10 | 1985-05-07 | Drummond Donald D | Drill bit assembly with fluid separator |
| US4541494A (en) * | 1982-10-19 | 1985-09-17 | Drumco | Drill bit assembly |
| US4646858A (en) * | 1985-04-19 | 1987-03-03 | Hughes Tool Company - Usa | Earth boring bit with air system access |
| US4750573A (en) * | 1985-12-04 | 1988-06-14 | Baker International Corp. | Drill bit having a flush-out port |
| US5012876A (en) * | 1990-02-01 | 1991-05-07 | Dresser Industries, Inc. | Rotary drill bit providing separation of liquid from gas |
| CN2627194Y (en) * | 2003-06-12 | 2004-07-21 | 江汉石油钻头股份有限公司 | Single cone bit waterpower arrangement |
| CN101255783A (en) * | 2008-03-07 | 2008-09-03 | 同济大学 | Improved large diameter air reverse circulation drill bit structure |
| CN202467659U (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐合金工具股份有限公司 | Mining drill bit for drilling vent of coal mine |
-
2012
- 2012-01-17 CN CN2012100136657A patent/CN102704845A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4184554A (en) * | 1977-05-24 | 1980-01-22 | Sandvik Aktiebolag | Check valve for rock drill |
| US4154312A (en) * | 1977-05-26 | 1979-05-15 | Eduardo Barnetche | Drill bit with single cutting head |
| US4541494A (en) * | 1982-10-19 | 1985-09-17 | Drumco | Drill bit assembly |
| US4515229A (en) * | 1983-06-10 | 1985-05-07 | Drummond Donald D | Drill bit assembly with fluid separator |
| US4646858A (en) * | 1985-04-19 | 1987-03-03 | Hughes Tool Company - Usa | Earth boring bit with air system access |
| US4750573A (en) * | 1985-12-04 | 1988-06-14 | Baker International Corp. | Drill bit having a flush-out port |
| US5012876A (en) * | 1990-02-01 | 1991-05-07 | Dresser Industries, Inc. | Rotary drill bit providing separation of liquid from gas |
| CN2627194Y (en) * | 2003-06-12 | 2004-07-21 | 江汉石油钻头股份有限公司 | Single cone bit waterpower arrangement |
| CN101255783A (en) * | 2008-03-07 | 2008-09-03 | 同济大学 | Improved large diameter air reverse circulation drill bit structure |
| CN202467659U (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐合金工具股份有限公司 | Mining drill bit for drilling vent of coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121003 |