CN206562931U - A kind of coal petrography cut Novel cutting tooth - Google Patents
A kind of coal petrography cut Novel cutting tooth Download PDFInfo
- Publication number
- CN206562931U CN206562931U CN201621307958.6U CN201621307958U CN206562931U CN 206562931 U CN206562931 U CN 206562931U CN 201621307958 U CN201621307958 U CN 201621307958U CN 206562931 U CN206562931 U CN 206562931U
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- CN
- China
- Prior art keywords
- coal petrography
- tooth
- coal
- pick
- high pressure
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- Withdrawn - After Issue
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Abstract
The utility model patent is related to coal-cutting machinery field, more particularly to a kind of coal petrography cut Novel cutting tooth.Goal of the invention is to provide a kind of coal petrography cut Novel cutting tooth, the mode coal petrography cutting being combined using the mechanical cut of pick with gases at high pressure expansion, and coal petrography is by the squeezing action of pick and the dilating effect of gases at high pressure, it is easier to from nicking.Novel cutting tooth overall structure is revolving body, it is made up of tooth body and crown two parts, tooth is as a cylindrical structural, bottom opens up cylindrical bottom outlet, the bottom outlet is shoulder hole, interior logical gases at high pressure, tooth body surface distributed has helicoidal structure, helicoidal structure section is trapezoidal, and it is evenly equipped with some circular ventholes in the body structure surface, the venthole is communicated with the bottom outlet of tooth body bottom, cutting process of the present utility model can change the stress of coal petrography, improve pick stress, reduce the abrasion of pick, broken coal efficiency is improved simultaneously, so as to reduce coal mining cost, with certain economic benefit.
Description
Technical field
This patent is related to coal-cutting machinery field, more particularly to a kind of coal petrography cut Novel cutting tooth.
Background technology
At present, the major way of drum shearer coal petrography cutting is to carry out mechanical cut using pick, and coal petrography is by cutting
The clipping force of tooth gets off from nicking.Current coal winning machine cutting bit widely uses pick-shaped cutter, the master of pick-shaped cutter coal petrography cutting
It is pressure of the coal petrography by pick to want mode, when external force reaches coal petrography compression strength, coal petrography rupture.In cutting course, cut
Odontotripsis is serious, it is necessary to often be changed, and these all in a disguised form improve coal production cost.The physical property of coal shows, its
Tensile strength is less than compression strength, i.e., be easier to crush when its under tension when ratio is under pressure.Therefore, if in coal petrography cutting
During, make coal petrography by certain tension, a certain degree of will reduce the stress of pick, so as to improve coal-winning machine rolling
The stress of pick on cylinder, reduction pick abrasion, improves pick service life, while broken coal efficiency is improved, and then raising is adopted
Coal efficiency, reduces cost of winning.Therefore, coal petrography cutting form and pick mechanical structure are innovated, it is imperative.
The content of the invention
The purpose of the utility model patent is to provide a kind of coal petrography cut Novel cutting tooth, thus it is possible to vary the stress of coal petrography
State, improves pick stress, reduces the abrasion of pick, improves pick service life, while improving broken coal efficiency, Jin Erti
High coal mining efficiency, so that coal mining cost is reduced, with certain economic benefit.
To achieve the above object of the invention, the present invention is using following design：
By changing the force way of coal petrography during pick cutting, coal petrography is set to be easier to from nicking.Traditional pick type
During pick cutting coal petrography, coal petrography is finally got off by the squeezing action of pick-shaped cutter from nicking.Because the tension of coal petrography is strong
Degree is less than compression strength, therefore, is easier to get off from nicking when coal petrography is by tension.The present invention exactly make use of coal
This characteristic of rock, opens up cylindrical bore inside Novel cutting tooth, and gases at high pressure, pick cutting coal petrography can be injected in the endoporus
When, gases at high pressure inject from the endoporus, and are sprayed by other ventholes, gases at high pressure is filled in coal petrography crack, further
Expand coal petrography crack, coal petrography is by certain tension, it is easier to from nicking, i.e., using the mechanical cut of pick and high pressure
The mode coal petrography cutting that gas flaring is combined, coal petrography by pick-shaped cutter squeezing action while, filled by gases at high pressure
Enter tension caused by the expansionary force in coal petrography crack.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
The expansionary force collective effect of squeezing action and gases at high pressure by pick is on coal petrography, and gases at high pressure are filled to coal petrography
In crack, make coal petrography by certain tension, it is easier to from nicking.To realize the cutting process, it is necessary to which design is a kind of
The pick of new structure, its overall structure is revolving body, is made up of, is opened in Novel cutting tooth tooth body bottom tooth body and crown two parts
If cylindrical bottom outlet, the bottom outlet is to lead to gases at high pressure in shoulder hole, the bottom outlet, during pick cutting coal petrography, gases at high pressure enter should
Bottom outlet, tooth is as a cylindrical structural, and surface distributed has helicoidal structure, strengthens the spin performance of pick, and helicoidal structure is cut
Face is evenly equipped with the helicoidal structure surface some circular ventholes, the venthole and the bottom outlet phase of tooth body bottom to be trapezoidal
Logical, gases at high pressure spray from these ventholes, are applied in coal petrography crack.Crown is integrally in cone, and its vertex of a cone has necessarily
Fillet, its surface is welded with 3 ~ 6 circular arc type wear ribs from the vertex of a cone to cone bottom generatrix direction, and the wear rib uses high abrasion material
Material, section is in circular arc type, and two ends end face is curved surface, and the structure can not only increase the contact surface area of pick and coal petrography, more sharp
In broken coal, and the abrasion of pick crown can be reduced, and after fusiform structure weares and teares, can be without dismounting, directly will be new
Wear rib is welded to crown surface.
Usefulness of the present invention is：Pick stress can be improved, reduce the abrasion of pick, pick is improved and use the longevity
Life, reduces coal-winning machine downtime, while broken coal efficiency is improved, so that coal mining cost is reduced, with certain economy effect
Benefit.
Brief description of the drawings
Accompanying drawing 1 is the Novel cutting tooth front view in apparatus of the present invention, and Fig. 2 is Novel cutting tooth front view sectional view.Wherein, 1
It is crown for tooth body, 2,3 be bottom outlet, and 4 be helicoidal structure, and 5 be venthole, and 6 be wear rib.
Embodiment
Using the mechanical cut of pick the mode coal petrography cutting being combined is expanded with gases at high pressure.To realize the cutting process,
During work, while Novel cutting tooth is extruded coal petrography, the gases at high pressure being passed through in Novel cutting tooth, which go out in venthole 5, to be sprayed,
Gases at high pressure are filled in coal petrography crack, make coal petrography by certain tension, so as to be easier to from nicking.Novel cutting tooth
Overall structure is revolving body, is made up of tooth body 1 and the two parts of crown 2, and the bottom of tooth body 1 opens up cylindrical bottom outlet 3, and bottom outlet 3 is rank
Lead to gases at high pressure in terraced hole, bottom outlet 3, during pick cutting coal petrography, gases at high pressure enter bottom outlet 3, and from the outlet communicated with bottom outlet 3
Sprayed in hole 5.Tooth body 1 is a cylindrical structural, and surface distributed has helicoidal structure 4, enhances the spin performance of pick.Crown
2 is overall in cone, and its surface is welded with 3 ~ 6 circular arc type wear ribs 6 from the vertex of a cone to cone bottom generatrix direction, and the wear rib 6 is adopted
With high abrasion resisting material, section is in circular arc type, and the structure can not only increase the contact surface area of pick and coal petrography, is more conducively broken
Coal, and the abrasion of pick crown 2 can be reduced.After wear rib 6 weares and teares, without dismantling pick, directly by new wear rib 6
It is welded to the surface of crown 2.
Claims (2)
1. a kind of coal petrography cut Novel cutting tooth, it is technically characterized in that overall structure is revolving body, by tooth body（1）And crown
（2）Two parts are constituted, in tooth body（1）Bottom opens up cylindrical bottom outlet（3）, bottom outlet（3）For shoulder hole, bottom outlet（3）Interior logical high pressure
Gas, during pick cutting coal petrography, gases at high pressure enter the bottom outlet（3）, tooth body（1）For a cylindrical structural, surface distributed has spiral shell
Revolve shape structure（4）, helicoidal structure（4）Section is trapezoidal, and in the helicoidal structure（4）Surface is evenly equipped with some circular outlets
Hole（5）, the venthole（5）With tooth body（1）The bottom outlet of bottom（3）Communicate, gases at high pressure are from these ventholes（5）It is middle to spray, make
Use in coal petrography crack；Crown（2）Overall in cone, its vertex of a cone has certain fillet, and its surface is from the vertex of a cone to cone bottom bus side
To 3 ~ 6 circular arc type wear ribs are distributed with（6）.
2. a kind of coal petrography cut Novel cutting tooth as claimed in claim 1, it is technically characterized in that wear rib（6）It is resistance to using height
Material is ground, section is in circular arc type, and two ends end face is curved surface, and it welds together with crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307958.6U CN206562931U (en) | 2016-12-01 | 2016-12-01 | A kind of coal petrography cut Novel cutting tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307958.6U CN206562931U (en) | 2016-12-01 | 2016-12-01 | A kind of coal petrography cut Novel cutting tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206562931U true CN206562931U (en) | 2017-10-17 |
Family
ID=60029664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621307958.6U Withdrawn - After Issue CN206562931U (en) | 2016-12-01 | 2016-12-01 | A kind of coal petrography cut Novel cutting tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206562931U (en) |
-
2016
- 2016-12-01 CN CN201621307958.6U patent/CN206562931U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171017 Effective date of abandoning: 20181207 |
|
| AV01 | Patent right actively abandoned |